[en] Photovoltaics are becoming increasingly important in the power generation industry. As a result, the crystalline silicon solar cells used in the industry for the fabrication of photovoltaic panels have evolved considerably, with IBC cells being the most recent. These cells use more complex and expensive structures than their predecessors (Al BSF and PERC), achieving higher efficiency. They are mainly manufactured by three companies, each with its own technology. As a result, IBC cells are in high demand for research to reach more companies in the industry. In this project, IBC cells have been characterised according to technological and geometrical parameters. Regarding the technological parameters, the IV curve of the cell was measured at different illuminations using SolarTiM software. In addition, the Multiv software was used to define the parameters. It has been observed that these are very high efficiency cells, with a VOC of 720 mV, an ISC of 40 mA/cm2 and a breakdown voltage of 2.5 V (VBR). In order to carry out these measurements, laboratory machines mainly designed for traditional solar cells have been adapted for IBC cells. To achieve this, the layout of a PCB has been designed using multisim/ultiboard applications, and the prototype has been fabricated using chemistry. This prototype has been used both to measure global parameters and to carry out electroluminescence measurements. As for the geometrical parameters, measurements of the IBC solar cell were taken using the laboratory's 3D microscope. Finally, the analysis of the series resistance in the cell geometry and its relationship with efficiency was concluded. It has been proven that the value of the measured series resistances corresponds to the theoretical development.

[eu] Energia fotovoltaikoa gero eta garrantzia handiagoa hartzen ari da energia sorkuntzaren industrian. Horregatik, industrian panel fotovoltaikoak egiteko erabiltzen diren silizio kristalinozko eguzki zelulek eboluzio handia izan dute, berrienak IBC zelulak izanda. Zelula hauek bere aurrekariak (Al BSF eta PERC) baino egitura konplexuagoak eta garestiagoak erabiltzen dituzte, efizientzia handiagoa lortuz. Nagusiki hiru enpresek fabrikatzen dituzte, bakoitzak bere teknologia propioa erabiliz. Horregatik, IBC zelulek ikerkuntza eskaera handia dute, industriako enpresa gehiagora hel daitezen. Proiektu honetan, IBC zelulen karakterizazioa burutu da parametro teknologiko eta geometrikoen arabera. Parametro teknologikoei dagokionez, zelularen IV kurba neurtu da argiztapen ezberdinetara, SolarTiM software-aren bitartez. Gainera, parametroak definitzeko Multiv software-a erabili da. Oso efizientzia altuko zelulak direla ikusi da, hala nola 720 mV-ko VOC-a, 40 mA/cm2-ko ISC-a eta 2,5 V-eko alderantzizko etendura tentsioa (VBR). Neurketa hauek egin ahal izateko, eguzki zelula estandarrentzako diseinatuta dauden laborategiko makinak IBC zeluletara egokitu dira. Horretarako PCB euskarri baten layout-a diseinatu da multisim/ultiboard aplikazioetan eta kimikaren bitartez prototipoa fabrikatu da. Prototipo hau bai parametro globalak neurtzeko, bai elektrolumineszentzia neurketak egiteko baliozkotu da. Parametro geometrikoak karakterizatzeko lehenengo 3D mikroskopioarekin IBC eguzki zelularen neurriak hartu dira, eta amaitzeko serieko erresistentzia zelularen geometrian eta efizientziarekin duen erlazioa analizatu da garapen baten bitartez. Neurtutako serieko erresistentzien balioa garapen teorikoarekin bat datozela frogatu da.