cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Thermal and Mechanical Induced Loading on Cell Interconnectors in Crystalline Photovoltaic Modules
Creators: name: Meier, R.
name: Krämer, F.
name: Schindler, S.
name: Wiese, S.
name: Bagdahn, J.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
PV Modules

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 3740-3744
description: During the production processes and in further lifetime a crystalline photovoltaic module is subjected
to different kinds of load. Mechanical loading, as well as a change in temperature induces stresses in and between the
module components. These stresses result in a displacement of solar cells within the module and therefore load the
copper ribbons which interconnects them electrically and also mechanically. A mechanical failure of such a ribbon
leads to a high loss in modules efficiency and may even result in a cut of the electrical circuit. The purpose of this
work is a quantitative estimation of the thermally and purely mechanical induced loading of the ribbons during
service. For this purpose specially prepared solar cells were laminated to a solar module in an industrial process line.
This module was filmed during mechanical loading and thermal cycling testing in order to measure the cell
displacement, which is a major reason for load on the ribbon.
Το ιεραποστολικό και εκπαιδευτικό έργο δύο μεγάλων μορφών του Νέου Ελληνισμού στην Δυτική Ελλάδα και την Ήπειρο τον 18ο αιώνα: Νεκτάριος Τέρπος – Άγιος Κοσμάς ο Αιτωλός
Creators: name: Μπουλογεώργος, Ευστάθιος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2024
Subjects: Εκπαιδευτικό και ιεραποστολικό έργο
Ήπειρος και Δυτική Ελλάδα τον 18ο αιώνα
Νεκτάριος Τέρπος
Άγιος Κοσμάς ο Αιτωλός
missionary and educational work
Western Greece and Epirus in the 18th century
Nektarios Terpos
Saint Kosmas of Aetolia

description: Σκοπός του παρόντος πονήματος είναι η παρουσίαση των δύο μεγάλων πνευματικών μορφών του Νεκταρίου Τέρπου και του Αγίου Κοσμά του Αιτωλού και η μελέτη του βίου, της δράσης και της απήχησής της στον υπόδουλο ελληνικό κόσμο της Ηπείρου και της Δυτικής Ελλάδας κατά τον 18ο αιώνα. Την κύρια μεθοδολογία της έρευνας αποτέλεσε η ιστορική έρευνα μέσω της συγκέντρωσης, του ελέγχου και της καταγραφής πληροφοριών που συνδέονται με τη ζωή και το έργο του Νεκταρίου Τέρπου και του Αγίου Κοσμά. Επιχειρεί, επίσης, μελετώντας το ιστορικό, κοινωνικό και πολιτισμικό περιβάλλον στο οποίο επιτελέστηκε το έργο, να μας βοηθήσει να κατανοήσουμε το παρελθόν και να αξιολογήσουμε την αξία του για το παρόν και το μέλλον. Συνεπώς, η μελέτη των πρωτογενών πηγών και των βιβλιογραφικών αναφορών επί αυτών θα μας βοηθήσει να ρίξουμε φως και να κατανοήσουμε βαθύτερα την σημασία της ύπαρξης και της δράσης του Νεκταρίου Τέρπου και του Αγίου Κοσμά υπό δυσκολότατες συνθήκες, σε συγκεκριμένες περιοχές με έντονα προβλήματα εξισλαμισμού και φθοράς του ελληνισμού.
description: The aim of the present thesis was the presentation of the two great spiritual figures of Nektarios Terpos and Agios Kosmas of Aitolos and the study of their life, action and impact in the subservient Greek world of Epirus and Western Greece during the 18th century. The main methodology of the research was historical research through the gathering, study and registering the information related to the life and work of Nektarios Terpos and Agios Kosmas. It also tries, by studying the historical, social and cultural environment in which the work was carried out, to help us understand the past and evaluate its value for the present and the future. Therefore, the study of the primary sources and the bibliographic references on them will help us to shed light and to understand more deeply the importance of the existence and the action of Nektarios Terpos and Agios Kosmas under very difficult conditions, in specific areas with strong problems of Islamization and decay of Hellenism.
title: The Moffat Shale group of the Southern Uplands of Scotland : structure, stratigraphy and palaeontology
Creators: name: Eales, Martin Hugh
Publisher: name: University of Glasgow
Year: 1978

description: The Moffat Shale Group consists of a condensed sequence of pelagic and hemi-pelagic sediments which crop out as elongated inliers in the Northern and Central Belts of the Southern Uplands of Scotland. This thesis deals with the structure, stratigraphy, sedimentology and palaeontology of the inliers in the Central Belt. Biostratigraphical and lithological controls have enabled the stratigraphy of the inliers to be worked out with greater precision than elsewhere in the Southern Uplands. Strike faulting within the greywacke is rarely recognized mainly due to the absence of stratigraphical markers. Within the Moffat Shale strike faults, which are probably rotated thrusts, are common and beds of the same age, but differing in lithology and thickness, are brought into close proximity. This faulting was evidently on a wide scale involving significant tectonic transport. At least two phases of strike faulting are evident associated with the major folding. Such relationships are believed to exist throughout the Southern Uplands and in the Longford-Down Inlier of Ireland. Wrench faulting is ubiquitous throughout the Southern Uplands and is the last significant deforraational phase recognized in the Moffat Shale. The structural analysis for the Moffat Shale is consistent with those described by others who have worked in various parts of the Southern Uplands, except that the role of strike faulting is more emphasized here. This may be because the strike faults are more easily recognizable in the Moffat Shale but it may be that a major decollement occurred near, or within, the Moffat Shale lithology. The Southern Uplands is believed to represent an accretionary prism in which younger thrust slices have been successively accreted from the south-east by under-thrusting. It is suggested also that deformation spread from north-west to south-east and was coeval with the fomation of the accretionary prism. The tern 'Moffatian Orogeny' is proposed for this regional event which occurred from about Middle Ordovician to late Silurian times. At almost every active continental margin where there is sufficient sediment, an accretionary prism is forming which is deformed according to the imbricate thrust model. It is proposed that the Southern Uplands was one such imbricated accretionary prism which formed in the Lower Palaeozoic on the south-eastern margin of the American Plate. In the Appendix several graptolite taxa are discussed. Ten new species and nine new subspecies are proposed from the Ordovician of the Moffat Shale.
title: Identity, writing and subversion in African fiction
Creators: name: Dahhan, Bensalem
Publisher: name: University of Glasgow
Year: 2004

description: This thesis compares postcolonial African writing of French and English expression, and investigates the intersection of identity and writing in selected texts by focusing on the subversive strategies deployed by their authors. This study examines six North African and sub-Saharan fictional texts by Abdelkebir Khatibi, Assia Djebar, Tahar Ben Jelloun, Chinua Achebe, Flora Nwapa and Nuruddin Farah, using postcolonialism as a theoretical framework through which to address their "double edged" critical consciousness: they are read both as in and against an emerging tradition of anticolonial writing. In my analysis of these selected texts, I examine the creative strategies used by African writers both to subvert colonial and nationalist constructions, and to articulate a sense of identity that is heterogeneous in relation to cultures, languages, ethnicities and sexualities. The four chapters address linguistic and literary decolonisation, gender, ethnicity, cultural hybridity, and internal colonialisms, as well as the problematics of representation, in paired readings of authors and texts. Chapter One introduces key issues and debates, by drawing on a body of critical approaches to develop a framework for analysing identity in African literary texts. Chapter Two looks at the role of history and memory in shaping postcolonial identity in two novels by Abdelkebir Khatibi and Chinua Achebe. Khatibi and Achebe's treatment of the intersection between history/memory and culture provides a valuable insight into the problematics of cultural identity and representation highlighted by postmodernism and poststructuralism. Chapter Three investigates the dilemmas and contradictions of emergent nationhood in two texts by Ben Jelloun and Farah. Here, I analyse the way in which both writers explore and expose the artifice of gender construction and the formation of national identity in the new nation. Chapter Four returns to the issue of gender in two novels by Assia Djebar and Flora Nwapa, drawing in particular on the oppositional strategies used by postcolonial African women writers to interrogate the gendered basis of authority and history.
a-Si:H/c-Si Heterojunction Solar Cells on 50 µm Thick Wafers With Rear Point Contacts
Creators: name: Amtablian, S.
name: Labrune, M.
name: Carroy, P.
name: Dupuis, J.
name: Fourmond, E.
name: Kaminski, A.
name: Fave, A.
name: Roca I Cabarrocas, P.
name: Ribeyron, P.-J.
name: Lemiti, M.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Thin Films
Thin Film Crystalline Silicon

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 2242-2245
description: Crystalline silicon thin film processes for thicknesses in the 20 - 80 @m range are more and more interesting
given the issue of silicon shortage. Layer Transfer Processes (LTP) were widely investigated to obtain thin films because of
the unavailability of suitable wire sawing. LTP avoids hazardous handling with fragile layers and silicon waste during
sawing. In addition, a-Si:H/c-Si heterojunction solar cells are well suited to reduce the photovoltaic power cost. High
efficiency on bulk substrate has been demonstrated by Sanyo Corporation and the low temperature process, less than 250 °C,
ensures economical gain. In this paper, we present the fabrication of 26 cm2 solar cells on 50 -70 @m thick CZ wafers. The
emitter is obtained either by a-Si:H (n+) deposition or by phosphorus diffusion. A 10 % efficiency solar cell on 52 @m thick
silicon substrate has been achieved with a-Si:H/c-Si heterojunction. Further improvement is expected with an optimized ITO
deposition and a progress in fill factor. Moreover, we also evaluate the effects of rear point contacts obtained by lithography
through a dielectric layer. LBIC measurement has been used and a relative 10 % enhancement of photogenerated current has
been observed at wavelength 980 nm on no contacted area compared to point contacts area. Moreover defects at the silicon
metallization interface can be revealed. Such characterization has been made on 45 @m thick transferred layer.
Self-Diagnosis, Scaffolding and Transfer: A Tale of Two Problems
Creators: name: Mason, Andrew
name: Cohen, Elisheva
name: Singh, Chandralekha
name: Yerushalmi, Edit
Publisher: name: arXiv
Year: 2016
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: Helping students learn from their own mistakes can help them develop habits of mind while learning physics content. Based upon cognitive apprenticeship model, we asked students to self-diagnose their mistakes and learn from reflecting on their problem solution. Varying levels of scaffolding support were provided to students in different groups to diagnose their errors on two context-rich problems that students originally solved in recitation quizzes. Here, we discuss students' cognitive engagement in the two self-diagnosis activities and transfer tasks with different scaffolds.
description: 4 pages, 3 tables, invited conference proceedings. in 2009 Physics Education Research Conference (Vol. 1179, No. 1, pp. 27-30), AIP Publishing (2009)
Electron Beam Crystallised Thin Film Silicon Solar Cell on Floatglass
Creators: name: Amkreutz, D.
name: Groth, C.
name: Ong, K.
name: Müller, J.
name: Didschuns, I.
name: Klimm, C.
name: Schmidt, M.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Thin Films
Thin Film Crystalline Silicon

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 2250-2253
description: Poly-silicon on glass has been prepared by zone melting crystallization of 7-10 μm thick amorphous/nanocrystalline silicon with a line shaped electron beam. Silicon was deposited on float-glass, which has been covered by a SiC-layer, working as adhesive layer and diffusion barrier against impurity diffusion. For doping, the silicon layer has been spin coated by a borosilicate film. Si-crystallites are grown with 4-10 μm diameters and without preferential orientation. The polycrystalline absorber layers exhibit photoluminescence, their surface band bending can be changed by field effect and photoconductivity-decay analysis indicate minority carrier lifetimes up to some μs. The 30 nm thick a-Si:H(n) emitter deposited by PECVD and covered with an 80 nm ZnO layer contacted by an Al grid completes the solar cell structure glass/SiC/poly-Si/a-Si:H/ZnO/Al. Open circuit voltages of 350 mV before and 450 mV after H-plasma annealing have been reached, and with short circuit currents up to 8 mA·cm-2 at a fill factor of 50-55 % resulting in 1,7-1,9 % efficiency of the planar cell without any light trapping or rear side reflector.
Accelerated Testing of Ultrasonic Welding for Crystalline Silicon on Glass Modules
Creators: name: Jarnason, S.
name: Luechinger, C.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Thin Films
Thin Film Crystalline Silicon

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 2228-2231
description: Ultrasonic welding has been demonstrated to be a viable alternative tabbing process to ultrasonic
soldering for Crystalline Silicon on Glass (CSG) modules. Orthodyne Electronics ultrasonically welded tab ribbons
to CSG test coupons to determine the influence of substrate conditions on bond quality. Substrate texture and silicon
were the most important parameters to achieve reliable low contact resistivity bonds. Ultrasonically welded CSG
modules were exposed to almost one and a half years of accelerated environmental exposure, demonstrating
exceptional durability with minimal loss of power and minimal increase in equivalent module series resistance.
Plasma Hydrogen Passivation for Crystalline Silicon Thin-Films
Creators: name: Lindekugel, S.
name: Lautenschlager, H.
name: Ruof, T.
name: Reber, S.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Thin Films
Thin Film Crystalline Silicon

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 2232-2235
description: This paper presents the beneficial effects of Remote Plasma Hydrogen passivation (RPHP) on Recrystallized Wafer-Equivalent (RexWE) solar cells. We varied the dominating parameters of the RPHP process and analysed their effect on the RexWE solar cell parameters. A low and a high temperature regime were investigated for the RPHP. Both showed remarkable results in terms of Voc, FF, Jsc and  boosts. The striking benefit of a newly optimised hydrogenation process increased the Voc from 454 to 54 mV and the efficiency from 4.0 to 6.0% by means of a 45 min process at 450°C.
BigFCM: Fast, Precise and Scalable FCM on Hadoop
Creators: name: Ghadiri, Nasser
name: Ghaffari, Meysam
name: Nikbakht, Mohammad Amin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences
subject: D.1.3; E.1; H.2.4; I.5.3
subject: 68T01

description: Clustering plays an important role in mining big data both as a modeling technique and a preprocessing step in many data mining process implementations. Fuzzy clustering provides more flexibility than non-fuzzy methods by allowing each data record to belong to more than one cluster to some degree. However, a serious challenge in fuzzy clustering is the lack of scalability. Massive datasets in emerging fields such as geosciences, biology and networking do require parallel and distributed computations with high performance to solve real-world problems. Although some clustering methods are already improved to execute on big data platforms, but their execution time is highly increased for large datasets. In this paper, a scalable Fuzzy C-Means (FCM) clustering named BigFCM is proposed and designed for the Hadoop distributed data platform. Based on the map-reduce programming model, it exploits several mechanisms including an efficient caching design to achieve several orders of magnitude reduction in execution time. Extensive evaluation over multi-gigabyte datasets shows that BigFCM is scalable while it preserves the quality of clustering.
Quantitative Interpretation of Light Beam Induced Current Contrast Profiles: Back Side Surface Influence
Creators: name: Micard, G.
name: Seren, S.
name: Hahn, G.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Advanced Photovoltaics: New Concepts and Ultra-high Efficiency
Fundamental Studies

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 520-527
description: The quantitative interpretation of a Light Beam Induced Current (LBIC) contrast profile of a grain boundary
(GB) allows the extraction of the ‘recombination strength’ of the GB, characterized by its effective surface recombination
velocity (Seff), and of the diffusion length (Ldiff) of the neighboring grains. The previous fitting model developed by Donolato
[1] assumed an infinite wafer thickness (h) that restricts its validity to cases where Ldiff<500 μm) the present extension can provide a local estimation of Sb that reflects the
back side electrical quality. The quantitative evaluation of Ldiff and Seff is very useful for e.g. the evaluation of the
effectiveness of a hydrogenation or gettering step in a solar cell process.
Quantifying the Risk of Power Loss in PV Modules Due to Micro Cracks
Creators: name: Köntges, M.
name: Kunze, I.
name: Kajari-Schröder, S.
name: Breitenmoser, X.
name: Bjørneklett, B.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
PV Modules

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 3745-3752
description: Micro cracks in wafer based silicon solar cell modules are nowadays identified by a human observer with
the electroluminescence (EL) method. However, the essential question of how the micro cracks affect the PV module
performance has yet to be answered. We experimentally analyze the direct impact of micro cracks on the module power
and the consequences after artificial aging. We show that the immediate effect of micro cracks on the module power is
small, whereas the presence of micro cracks is potentially crucial for the performance of the module after artificial
ageing. This confirms the necessity to develop the means of quantifying the risk of power loss in PV modules with
cracked solar cells in their lifetime, in order to enable manufacturers to discard defective modules with high risk of
failure while keeping modules with uncritical micro cracks. As a first step towards a risk estimation we develop an upper
bound for the potential power loss of PV modules due to micro cracks in the solar cells. This is done by simulating the
impact of inactive solar cell fragments on the power of a common PV module type and PV array. We show that the
largest inactive cell area of a double string protected by a bypass diode is most relevant for the power loss of the PV
module. A solar cell with micro cracks, which separate a part of less than 8% of the cell area, results in no power loss in a
PV module or a PV module array for all practical cases. In between approximately 12% to 50% of inactive area of a
single cell in the PV module the power loss increases nearly linearly from zero to the power of one double string.
Investigating Particle Acceleration in Protostellar Jets: The Triple Radio Continuum Source in Serpens
Creators: name: Rodríguez-Kamenetzky, Adriana
name: Carrasco-González, Carlos
name: Araudo, Anabella
name: Torrelles, José M.
name: Anglada, Guillem
name: Martí, Josep
name: Rodríguez, Luis F.
name: Valotto, Carlos
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: While most protostellar jets present free-free emission at radio wavelengths, synchrotron emission has been also proposed to be present in a handful of these objects. The presence of non-thermal emission has been inferred by negative spectral indices at centimeter wavelengths. In one case (the HH 80-81 jet arising from a massive protostar), its synchrotron nature was confirmed by the detection of linearly polarized radio emission. One of the main consequences of these results is that synchrotron emission implies the presence of relativistic particles among the non-relativistic material of these jets. Therefore, an acceleration mechanism should be taking place. The most probable scenario is that particles are accelerated when the jets strongly impact against the dense envelope surrounding the protostar. Here, we present an analysis of radio observations obtained with the Very Large Array of the Triple Radio Source in the Serpens star-forming region. This object is known to be a radio jet arising from an intermediate-mass protostar. It is also one of the first protostellar jets where the presence of non-thermal emission was proposed. We analysed the dynamics of the jet as well as the nature of the emission and discuss these issues in the context of the physical parameters of the jet and the particle acceleration phenomenon.
description: Astrophysical Journal (in press). 24 pages (9 figures). Contact: Adriana Rodr\'iguez-Kamenetzky (adrianark@gmail.com)
Analysis and Evaluation of Thin-Wafer Handling Methods
Creators: name: Fischmann, C.
name: Giesen, T.
name: Goh, D.
name: Hoffmeister, M.
name: Wertz, R.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Manufacturing Issues

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 1352-1355
description: Resulting from the ever increasing demand for solar energy and the advancement in the photovoltaic
technology the application of conventional grippers becomes more and more challenging in today’s wafer production.
Available grippers are not yet reliable for the required production rate of wafer mass manufacturing. The thickness of
wafers has rapidly decreased in recent years (industrial state-of-the-art thickness: 160 - 200 μm). Due to the low
availability of silicon the market prices inevitably increased. It is foreseeable that the wafer thickness will drop to
approx. 140 μm or even thinner in the next step of advancement. The gentle handling of such wafers without damage
or contamination proves to be too huge a challenge for conventional grippers.
Due to the required coordination of different processes involved in the manufacturing of silicon-based thin
photovoltaic wafers the production quality and output depend highly on the level of automation applied. An important
aspect of automation in the production line is the handling of those thin wafers from one process to another. This
paper describes the analysis and evaluation of different gripper systems and gives an overview about the first test
results of the thin wafer gripper test bed.
Analysis of Inverter Configuration on CPV Plants
Creators: name: Alamillo, C.
name: De La Rubia, O.
name: Gil, E.
name: Hipólito, A.
name: Martín, A.
name: Rubio Berenguel, F.
name: Pachón, J.L.
name: Banda Rueda, P.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
PV System Engineering and Standards, Socio-economic Aspects, and Sustainability

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 4733-4736
description: ISFOC is a research and development institute which is fostering the industrialization of Concentration
Photovoltaics (CPV) technologies.
Actually ISFOC counts with 1.1 MW of CPV plants grid-connected (another 0.9 MW will be connected in the next
few months) mounted with different kind of inverters. In operation since September 2008, the database of the
different installations monitoring system supports these results. Also, as built projects provided by the CPV installers
and technical specifications provided by the electrical components manufacturers have been taking into account for
the analysis.
The calculations present only the electrical part of the installations, from the concentrators output to the energy meter
input. A comparison between the electrical losses of the most common inverters typologies in a CPV plant is
developed.
title: A world of their own? The novel and the total institution
Creators: name: Hamilton, Anne
Publisher: name: University of Glasgow
Year: 2015
Subjects: subject: Total Institution, Erving Goffman, sociology, novel, family, refugees, Cyprus, fiction

description: A World of Their Own? The Novel and the Total Institution is an exploration of the sociological concept of the Total Institution with particular reference to its relationship with English literature, followed by the presentation of Chasing Elena, an original novel. The term ‘Total Institution’, attributed to Erving Goffman (1961) encapsulates an environment in which a large number of individuals participate in an enclosed and formally administered way of life. Chapter 1 of the critical text defines the Total Institution and sets the scene for Chapter 2, which examines selected literary texts that feature life in all-encompassing institutions and considers Goffman’s ‘moral career of the inmate’ in terms of the experiences of the fictional characters. Chapter 3 is a literature review reflecting upon Goffman’s work. It expands the model and metaphor of the Total Institution and includes my original interpretation of the concept called here the ‘New Total Institution’. Chapter 4 offers a close reading of contemporary literary texts in which this new interpretation is examined for strength and sustainability when applied to a belief system, a social structure and an isolated physical environment respectively. Chapter 5 considers the relevance of the (New) Total Institution, initially, in terms of the family. It then highlights specific groups of people who live in constrained and constraining circumstances: those affected by domestic abuse, and displaced persons such as refugees. Chapter 6 turns to the relationship between the (New) Total Institution and the novel, looking at the choices and experiences of the writer and the reader. It goes on to describe the ways in which the (New) Total Institution has informed the writing of Chasing Elena. Finally, this novel is presented in its entirety.
A New Linear Microwave Plasma Source for Inline PECVD
Creators: name: Schlemm, H.
name: Mehlich, H.
name: Wolf, P.
name: Decker, D.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Manufacturing Issues

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 1369-1373
description: Linear microwave plasma sources are used in PV-technology for ten years in the PE-CVD process of silicon nitride
as antireflection and passivation layer. Now a redesign of the plasma source has been carried out for silicon nitride
PE-CVD. This is achieved by applying an optimized magnetic field configuration and microwave power control.
Plasma characterization shows an ion current density of up to 800 μA cm-2 at mean ion energy of 5 eV. Extensive
Experiments have been carried out to investigate an optimized PE-CVD process for silicon nitride, which is shown in
regard of the Si-N bond density of silicon nitride. As a result of that a set of process recipes can be formulated with
considerable increased deposition speed.
The Interface Structures and Transport Mechanism in µc-Si/c-Si Hetero-Junction With Varying the Hydrogen Dilution Ratio by HWCVD
Creators: name: Liu, F.
name: Cui, J.
name: Zhang, Q.
name: Zhu, M.
name: Zhou, Y.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Thin Films
Thin Film Crystalline Silicon

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 2246-2249
description: The μc-Si thin films deposited by HWCVD with different hydrogen dilution were adopted as the buffer layers of heterojunction solar cells in this study. The HR-TEM results reveal that the intrinsic buffer layer tends to be epitaxial growth with high hydrogen dilution ratio. The dark I-V-T characteristics were measured between the temperature of 282K and 335K. The analyses of I-V-T curves in different voltage ranges indicate that for the microcrystalline Si /c-Si heterojunction with an epitaxy intrinsic buffer layer, the recombination current dominates the transport process at forward bias V<0.3V as widely reported in the literatures. However, tunneling through the interface states is the main transport mechanism in the voltage range of 0.3~0.5V. The device performance was remarkably improved with increase the hydrogen dilution ratio during the deposition of the intrinsic buffer layer.
Aspect Ratio Improvements for Printed Frontside Conductors on Silicon Solar Cells
Creators: name: Falcon, T.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Manufacturing Issues

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 1338-1346
description: For silicon photovoltaics to claim a substantial share of the global energy market, improvements in cell
efficiency are a prerequisite. One significant barrier to achieving this is the shadowing of the silicon wafer’s surface by
the frontside metallisation grid, which will typically block light from reaching about 8% of the wafer. This shadowing
loss cannot simply be mitigated by reducing the number of conductors, or by spacing them more widely. For this would
result in further efficiency losses, primarily due to the increase in resistance across the silicon between the conductors.
Although this trade-off between shadowing and resistance seems to leave little room for improvement, refinements can
still be made to give credible efficiency gains. The purpose of this work is to develop a method of minimising conductor
shading losses by creating narrower conductor lines, whilst maintaining or improving their cross sectional area
uniformity, and therefore their electrical conductivity. The industry favoured deposition process for frontside
metallisation is screen printing and it is this technique that is studied then developed in order to define the ingredients for
an optimised, high aspect ratio process. The work is ongoing and this paper reports on progress to date.
Effective Action for Hard Thermal Loops in Gravitational Fields
Creators: name: Francisco, R. R.
name: Frenkel, J.
name: Taylor, J. C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We examine, through a Boltzmann equation approach, the generating action of hard thermal loops in the background of gravitational fields. Using the gauge and Weyl invariance of the theory at high temperature, we derive an explicit closed-form expression for the effective action.
description: 4 pages, 2 figures
title: The encyclopaedia of Istanbul, a novel : & Ottoman crossroads: coffeehouses, politics, theatres and storytelling, critical essays
Creators: name: Cizakca, Defne
Publisher: name: University of Glasgow
Year: 2015
Subjects: subject: Ottoman theatre, coffeehouses, Young Ottomans, Ottoman fairy tales, historical novel, fin de siecle Istanbul, encyclopaedia of Istanbul, magical realism, Turkish feminists, year of the three sultans, fortune telling

description: The Encyclopaedia of Istanbul, A Novel and Ottoman Crossroads: Coffeehouses, Politics, Theatres and Storytelling, Critical Essays This Creative Writing PhD consists of a novel, The Encyclopaedia of Istanbul, and accompanying critical essays, Ottoman Crossroads: Coffeehouses, Politics, Theatres and Storytelling. The Encyclopaedia of Istanbul is historical in nature, and magically real in temperament. It is an account of fin de siècle Constantinopolis, and contains forgotten fairy tales, remnants of an ancient manuscript culture, Armenian playwrights, Turkish feminists, Greek fortune-tellers and Sephardim cantors. It tells the tale of six intersecting lives in 1876, a time known as “the year of the three Sultans” in Ottoman history. This period was filled with tensions between traditionalism and Westernization, but also new political possibilities forwarded by the Young Ottomans. While the characters in The Encyclopaedia of Istanbul are fictitious, they are inspired by historical events and figures. The second element of my PhD, Ottoman Crossroads, is made up of four individual essays that focus on selected themes from the novel. They scrutinize, in order of presentation, the history of coffeehouse culture, the secretive society of the Young Ottomans and their political thought, the formation of Armenian-Turkish theatre, and the rediscovery of Ottoman fairy tales. Whilst the novel and essays are coherent independently, they also link to each other in ways that are sometimes direct, and at other times subtle.
Wet Chemical Processing in Crystalline Silicon Wafer and Cell Production Today and Tomorrow
Creators: name: Nussbaumer, H.
name: Delahaye, F.
name: Saule, W.
name: Nagel, D.
name: Queisser, S.
name: Sander, B.-U.
name: Kuehnlein, H.
name: Kösterke, N.
name: Bay, N.
name: Cimiotti, G.
name: Eljaouhari, A.
name: Schweckendiek, J.
name: Dechant-Wagner, R.
name: Sen, I.
name: Kleinschmidt, S.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Manufacturing Issues

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 1356-1359
description: Wet chemical processes represent an important part of the value chain in the production process of
crystalline silicon wafers and solar cells. The paper gives an overview of the state of the art technology of wet
chemical processes in crystalline silicon wafer and solar cell production, such as wafer cleaning, texturing, high
purity cleaning, oxide removal, single side etching and additional processes like laser chemical doping combined
with plating are presented briefly.
Signatures of X-ray reverberation in the power spectra of AGN
Creators: name: Papadakis, I.
name: Pechacek, T.
name: Dovciak, M.
name: Epitropakis, A.
name: Emmanoulopoulos, D.
name: Karas, V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We compute fully relativistic disc response functions in the case of the "lamp-post" geometry using the full observed reflection spectrum for various X-ray source heights, disc inclination, and spin values of the central black hole. Since the observed PSD is equal to the product of the intrinsic power spectrum with the "transfer function" (i.e. the Fourier transform of the disc response function), we are able to predict the observed PSDs in the case of X-ray illumination of the inner disc. The observed PSD should show a prominent dip at high frequencies and an oscillatory behaviour, with a decreasing amplitude, at higher frequencies. The reverberation "echo" features should be more prominent in energy bands where the reflection component is more pronounced. The frequency of the dip is independent of energy, and it is mainly determined by the black hole mass and the X-ray source height. The amplitude of the dip increases with increasing black hole spin and inclination angle, as long as the height of the "lamp" is smaller than ~10 gravitational radii. The detection of the X-ray reverberation signals in the PSDs can provide further evidence for X-ray illumination of the inner disc in AGN. Our results are largely independent of the assumed geometry of the disc-corona system, as long as it does not change with time, and the disc response function is characterized by a sharp rise, a "plateau", and a decline at longer times. Irrespective of the geometry, the frequency of the main dip should decrease with increasing "mean time" of the response function, and the amplitude of the dip should increase with increasing reflection fraction.
description: Astronomy and Astrophysics accepted
The Pedagogies for Social Justice Podcast with Kyra Araneta and Dr Fatima Maatwk
Creators: name: Araneta, Kyra
name: Maatwk, Fatima
Publisher: name: National Teaching Repository
Year: 2023
Subjects: classificationCode: 390303
subject: Higher education

description: The Pedagogies for Social Justice Podcast with Kyra Araneta and Dr Fatima Maatwk
CNO behaviour in planet-harbouring stars. I Nitrogen abundances in stars with planets
Creators: name: Suárez-Andrés, L.
name: Israelian, G.
name: Hernández, J. I. González
name: Adibekyan, V. Zh.
name: Mena, E. Delgado
name: Santos, N. C.
name: Sousa, S. G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Carbon, nitrogen, and oxygen (CNO) are key elements in stellar formation and evolution, and their abundances should also have a significant impact on planetary formation and evolution. We present a detailed spectroscopic analysis of 74 solar-type stars, 42 of which are known to harbour planets. We determine the nitrogen abundances of these stars and investigate a possible connection between N and the presence of planetary companions. We used VLT/UVES to obtain high-resolution near-UV spectra of our targets. Spectral synthesis of the NH band at 3360A was performed with the spectral synthesis codes MOOG and FITTING. We identify several spectral windows from which accurate N abundance can be obtained. Nitrogen distributions for stars with and without planets show that planet hosts are nitrogen-rich when compared to single stars. However, given the linear trend between [N/Fe] vs [Fe/H], this fact can be explained as being due to the metal-rich nature of planet hosts. We conclude that reliable N abundances can be derived for metal-rich solar type stars from the near UV molecular band at 3360A. We confirm a linear trend between [N/Fe] and metallicity expected from standard models of Galactic chemical evolution.
description: 10 pages, 8 figures,. Accepted in A&A
DC-DC Converters with MPPT Control for Photovoltaic Panels
Creators: name: Pulvirenti, F.
name: La Scala, A.
name: Ragonese, D.
name: D'Souza, K.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
Balance of System Components

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 4383-4390
description: In this paper a monolithic DC-DC converter is presented which includes the Maximum Power Point Tracking
MPPT algorithm to find the optimal working point of the photovoltaic panel. This device breaks the present paradigm of
centralised power conversion, by transferring a part of the electronics from the inverter to the panel. One or more converters
can be placed in the junction box of the panel and due to the fact that the point of maximum power transfer is calculated
locally, the resulting efficiency of the entire PV system is higher when compared to the traditional architectures. Besides,
compared to similar emerging initiatives, this solution is more compact and therefore, commercially more advantageous.
Screen Printing Stencil Variables and their Importance for Printing on Silicon Solar Cells
Creators: name: Ernster, S.
name: Gmür, H.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Manufacturing Issues

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 1330-1332
description: Screen printing stencil quality and specification are paramount in controlling paste deposition. Understanding
the stencil variables available and their impact on the print deposit and quality will assist PV manufacturers in optimizing the
stencil specifications needed to meet the needs of their process. The poster presentation will explain the measurable
parameters of a screen printing stencil. By exploring these parameters closely and making subtle changes, one at a time,
Sefar can explain how these stencil changes will affect the resulting printed paste deposition. The poster presentation will
explain the parameters of the stencil and how they affect the deposition process.
Angular and Soiling Losses of PV Modules in Tracking Systems
Creators: name: Martín Chivelet, N.
name: Ruiz, J.M.
name: Bione M. F., J.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
PV Modules

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 4301-4303
description: The purpose of this work is to calculate the angular reflection losses that undergo flat-plat PV modules
working in solar tracking systems under real operating conditions. The calculation of these angular losses at different
sites has been performed by using an analytical model, formerly developed by the authors, that has proved to be in
good agreement with the experimental data. Calculations consider the effect of soiling also, which is useful in
cleaning maintenance decisions. As expected, the lowest angular losses are obtained in dual-axis tracking systems in
locations with high proportion of beam solar radiation –sunny climates-. It is demonstrated that the annual clearness
index is an important indicator of the angular losses in these systems. PV modules in azimuth trackers show angular
losses slightly higher than in dual-axis, and both significantly lower than those in non tracking systems. All values
increase as functions of the soiling level.
A Constructive Finite Field Method for Scattering Points on the Surface of $d$-Dimensional Spheres
Creators: name: Bajnok, Béla
name: Damelin, Steven B.
name: Li, Jenny
name: Mullen, Gary L.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11K38

description: In this exploratory article, we present a constructive method for scattering points on the surface of $d$ dimensional spheres which we believe is new and of interest. Indeed, the problem of uniformly distributing points on spheres is an interesting and difficult problem with vast applications in fields as diverse as crystallography, approximation theory, computational complexity, molecular structure, and electrostatics.
Effect of the Angle Dependence of Solar Cells on the Results of Indoor and Outdoor Calibrations
Creators: name: Winter, S.
name: Friedrich, D.
name: Gerloff, T.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
PV Modules

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 4304-4306
description: A typically unconsidered difference during solar cell measurements using the natural
sun light, on the one hand, and a sun simulator on the other hand is their angular distribution. While a
sun simulator creates mainly direct radiation, the natural sunlight contains a reasonably diffuse
portion, in addition. The angle dependence of different types of typical reference solar cells was
measured with a two axis solar cell goniometer. Thus the effect of neglecting the angular distribution
of global sunlight by using direct light, only, was calculated to be 0.5% to 1.2%. Hence, the authors
recommend the definition of the angular distribution within a standard.
Performance Evaluation of Thin-Film Technologies Based on Operating Data
Creators: name: Te Heesen, H.
name: Pfatischer, R.
name: Herbort, V.
name: Von Schwerin, R.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
PV Modules

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 3766-3768
description: Real operating data give a detailed view on the performance of different PV module technologies.
meteocontrol is currently monitoring more than 15,000 PV plants with an installed peak power of about 1.8 GWp. Two
main results are presented in this publication: On the one hand the performance gap between PV plants with CdTe
modules and with crystalline resp. a-Si modules is closing. The progression of the performance ratio of crystalline and a-
Si module is about 1 % per year. On the other hand PV plants with thin-film modules show a better performance and
yield production in summer month due to a smaller temperature coefficient. Crystalline modules are performing better in
winter months.
Comparative Outdoor Characterisation of PV Modules Across Europe
Creators: name: Stellbogen, D.
name: Mohring, H.-D.
name: Jagomägi, A.
name: Mõttus, E.
name: Friesen, G.
name: Domine, D.
name: Fabero, F.
name: Betts, T.
name: Gottschalg, R.
name: Zdanowicz, T.
name: Prorok, M.
name: Herrmann, W.
name: Martin, J.L.
name: De Montgareuil, A.G.
name: Merten, J.
name: Faiman, D.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
PV Modules

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 3774-3778
description: Outdoor performance measurements of PV modules are vital for the assessment of their energy
delivery capability in real field operation. However, the comparability of the empirical results from different test
sites has been quite low in the past due to diverse measurement procedures and evaluation methods.
In order to overcome these obstacles, harmonized measurement methods, data analysis processes, and quality
management measures have been defined within the Integrated Project PERFORMANCE. For the validation of these
common procedures a comparative outdoor test campaign has been conducted which included test institutes in
Estonia, France, Germany, Great Britain, Poland, Spain and Switzerland.
Sets of reference PV modules from crystalline silicon, amorphous silicon, cadmium telluride and copper indium
diselenide technology have each been consecutively characterized at 3-4 outdoor test sites in different countries
across Europe. The paper presents the results of the measurements from the different test sites and discusses the
achieved degree of conformity within this network of test labs.
Supplementary files: Incidence and mortality by pulmonary tuberculosis in Brazil: trends and projections, 2002-2037
Creators: name: Calazans  Batista, Jefferson Felipe
Publisher: name: Zenodo
Year: 2024

description: Three suplementary file from the manuscript intitled: Incidence and mortality by pulmonary tuberculosis in Brazil: trends and projections, 2002-2037.