Search query: All-solid-state dye-sensitized solar cells with high efficiency[J]

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abstract: Dye sensitized solar cells based on titanium dioxide (TiO2) are promising low cost alternatives to conventional solid state photovoltaic devices based on materials such as Si, CdTe and CuIn1 xGaxSe2 (refs 1, 2) Despite offering relatively high conversion efficiencies for solar energy, typical dye sensitized solar cells suffer from durability problems that result from their use of organic liquid electrolytes containing the iodide/tri iodide redox couple, which causes serious problems such as electrode corrosion and electrolyte leakage. Replacements for iodine based liquid electrolytes have been extensively studied, but the efficiencies of the resulting devices remain low. Here we show that the solution processable p type direct bandgap semiconductor CsSnI3 can be used for hole conduction in lieu of a liquid electrolyte. The resulting solid state dye sensitized solar cells consist of CsSnI2.95F0.05 doped with SnF2, nanoporous TiO2 and the dye N719, and show conversion efficiencies of up to 10.2 per cent (8.51 per cent with a mask) With a bandgap of 1.3 electronvolts, CsSnI3 enhances visible light absorption on the red side of the spectrum to outperform the typical dye sensitized solar cells in this spectral region.
author_names: In Jae Chung

Byunghong Lee

Jiaqing He

R P H Chang

Mercouri G Kanatzidis
title: All solid state dye sensitized solar cells with high efficiency
venue: Nature
year: 2012

abstract: Abstract Density functional theory study has been carried out to design a new All Solid State dye sensitized solar cell (SDSC) by applying a donor acceptor conjugated polymer instead of liquid electrolyte. The typical redox mediator (I 1 /I 3 is replaced with a narrow band gap, hole transporting material (HTM) The electronic and optical properties predict that donor and acceptor moieties in the polymeric body have increased the visible light absorption and charge transporting ability, compared to their parent polymers. A unique "upstairs" like band energy diagram is created by packing N3 between HTM and TiO 2 Upon light irradiation on the proposed configuration, electrons will move from the dye to TiO 2 and from HTM to dye (to regenerate dye) simultaneously. Our theoretical simulations prove that the proposed configuration will be highly efficient as the HOMO level of HTM is 1.19 eV above the HOMO of sanitizer (dye) providing an efficient pathway for charge transfer. High short circuit current density and power conversion efficiency is promised from the strong overlapping of molecular orbitals of HTM and sensitizer. A low reorganization energy of 0.21 eV and exciton binding energy of 0.55 eV, confirm the high efficiency of HTM. Finally, a theoretical open circuit voltage of 1.49 eV would results high quantum yield while, the chemical stability of HTM towards oxidation can be estimated from its high ionization potential value (4.57 eV)
author_names: Habib Ullah

Salma Bibi

Asif Ali Tahir

Tapas K Mallick
title: Donor acceptor polymer for the design of All Solid State dye sensitized solar cells
year: 2017

abstract: Figure 1. Chemical structures of the ionic conductors 1 5 (a) and the crystallographic packing structure of conductor 1 (b) Since their discovery by O'Regan and Gratzel in 1991,[1] dyesensitized solar cells (DSSCs) have attracted considerable interest[2] because of their low production cost, high power conversion efficiency (e) and environmental friendliness. Although an e over 11% has been recorded for DSSCs with volatile organic liquid electrolytes,[3] they may be inhibited for outdoor applications in view of the need for robust encapsulation. Therefore, considerable efforts have been devoted to developing solid electrolytes for the fabrication of solid state DSSCs (ssDSSCs)[4 12] However, the efficiency of ssDSSCs is still unsatisfactory compared with liquid junction DSSCs. The low conductivity and/or incomplete filling of solid electrolytes containing a I/I3 redox couple in mesoporous TiO2 films usually lead to a lower shortcircuit photocurrent (Jsc) open circuit photovoltage (Voc) and fill factor (FF)[13,14] Therefore, the development of novel solid electrolytes with high ionic conductivity and good pore filling property is of fundamental importance for highly efficient ssDSSCs. Imidazolium based ionic liquids have been proven to be promising materials as liquid electrolytes for high performance DSSCs because of their wide electrochemical window, high electrical conductivity, negligible vapor pressure, and nontoxicity.[15] However, they are still a type of liquid material and leakage during long term operation is unavoidable. To overcome these shortcomings and retain the advantage of the imidazolium structure, the liquid state phase of imidazolium based ionic liquids has been transformed into a solid state by raising their melting points over room temperature.[16] Unfortunately, the conductivities of the reported imidazolium salts with a solid phase and the efficiencies of their ssDSSCs are still low. In this communication, we report for the first time a novel class of ester functionalized ionic conductors based on an imidazolium cation and iodide anion (Figure 1a) for use in ssDSSCs. Such ester functionalized solid state electrolytes possess advantages over inorganic[17] and organic hole conductors.[18] Firstly, ester functionalized ionic conductors can form a three dimensional (3D) ionic channel of iodides, which is advantageous for fast movement of iodides and charge transfer along the polyiodide chain. Secondly, the coordination interactions between esters and Li+ ions (typically used cations in DSSCs) can form dimers of conductor molecules, and thus the
author_names: Hong Wang

Xi Zhang

Feng Gong

Gang Zhou

Zhong-Sheng Wang
title: Novel ester functionalized solid state electrolyte for highly efficient all solid state dye sensitized solar cells.
venue: Advanced materials
year: 2012

abstract: We applied organic donor p acceptor (D p A) sensitizers for photoelectrochemical polymerization (PEP) because of their appropriate energy levels and high light absorption. The polymerized conducting polymer PEDOT was used as hole conductor in all solid state dye sensitized solar cells (ssDSCs) By combination of the D p A sensitizers and the generated PEDOT from PEP of bis EDOT in acetonitrile, the resulting device showed an average power conversion efficiency of 5.6% Furthermore, the PEP in aqueous micellar electrolytic medium was also employed because of the ability to decrease oxidation potential of the precursor, thereby making the polymerization process easier. The latter method is a cost effective and environmentally friendly approach. Using as hole conductor the so obtained PEDOT from PEP of bis EDOT in aqueous electrolyte, the devices exhibited impressive power conversion efficiency of 5.2% To compare the properties of the generated polymer from bis EDOT in these two PEP methods, electron lifeti.
author_names: Jinbao Zhang

Lei Yang

Yang Shen

Byung-wook Park

Yan Hao

Erik M J Johansson

Gerrit Boschloo

Lars Kloo

Erik O Gabrielsson

Licheng Sun

Adel Jarboui

Christian Perruchot

Mohamed Soufiane Jouini

Nick Vlachopoulos

Anders Hagfeldt
title: Poly(3,4 ethylenedioxythiophene) hole transporting material generated by photoelectrochemical polymerization in aqueous and organic medium for all solid state dye sensitized solar cells
year: 2014

author_names: Emmanuelle Lancelle-Beltran

Philippe Prene

Christophe Boscher

Philippe Belleville

Pierrick Buvat

Clement Sanchez
title: All Solid State Dye Sensitized Nanoporous TiO2 Hybrid Solar Cells with High Energy Conversion Efficiency+
year: 2006

author_names: Bo Xu

Haining Tian
title: High Performance All Solid State Dye Sensitized Solar Cells
year: 2018

abstract: We report on all solid state dye sensitized solar cells with alkyloxy imidazolium iodide ionic polymer/SiO2 nanocomposite electrolyte and triphenylamine based metal free organic dyes (TC15) By optimizing the content of I2, 1,2 dimethyl 3 propylimidazolium iodide, and SiO2 nanoparticles in the electrolyte, considerable ionic conductivity of 0.151 mS cm 1 is achieved due to the formation of high efficiency electron exchange tunnels. The electrolyte is further characterized by differential scanning calorimetry and scanning electron microscopy (SEM) The result of differential scanning calorimetry shows that the melting temperature of the electrolyte is 120 degC. The SEM analysis reveals a favorable interfacial contact between the electrolyte and the TiO2. The all solid state solar cells with the as prepared alkyloxy imidazolium iodide ionic polymer/SiO2 nanocomposite electrolyte and triphenylamine based metal free organic dyes attains high energy conversion efficiency of 2.70% and 4.12% under the illumination.
author_names: Jifu Shi

Leren Wang

Yanliang Liang

Shengjie Peng

Fangyi Cheng

Jingwei Chen
title: All Solid State Dye Sensitized Solar Cells with Alkyloxy Imidazolium Iodide Ionic Polymer/SiO2 Nanocomposite Electrolyte and Triphenylamine Based Organic Dyes
year: 2010

abstract: Ionic liquid polymers, poly(1 alkyl 3 (acryloyloxy)hexylimidazolium iodide) are synthesized and used as mono ion transport electrolytes for all solid state dye sensitized solar cells. For these ionic liquid polymers, imidazolium cations are tethered on polymer main chain and only iodide species is mobile. Such a mono ion transport feature is favorable as solid state electrolyte in dye sensitized solar cells. High thermal stability up to 200 degC for these ionic liquid polymers is confirmed by thermogravimetric analysis. Among these ionic liquid polymers, poly(1 ethyl 3 (acryloyloxy)hexylimidazolium iodide) (PEI) exhibits the highest ionic conductivity (3.63 x 10 4 S cm 1) at room temperature. The dye sensitized solar cell based on PEI electrolyte without the addition of iodine exhibits the open circuit voltage of 838 mV, the short circuit current density of 9.75 mA cm 2 and the conversion efficiency of 5.29% measured at AM 1.5 illumination (100 mW cm 2) Incorporating iodine into PEI electrolyte results in the decrease of both the open circuit voltage and the photocurrent density due to the visible light adsorption by iodine and the enhancement of the recombination between conduction band electrons and the triiodide.
author_names: Guiqiang Wang

Shuping Zhuo

Liang Wang

Shi-bi Fang

Yuan Lin
title: Mono ion transport electrolyte based on ionic liquid polymer for all solid state dye sensitized solar cells
year: 2012

abstract: Organic ionic crystals carrying 4 cyano 4' hydroxybiphenyl and imidazolium units were synthesized and applied as the electrolytes for dye sensitized solar cells (DSSCs) The fabricated all solid state DSSCs achieved a cell efficiency of ~5.11% at 55 degC under the simulated air mass 1.5 solar spectrum illuminations at 100 mW cm 2 because of the enhanced light harvesting capability of the electrolyte. To further improve the cell efficiency, 1 propyl 3 methylimidazolium iodine (PMII) was added into the electrolytes as a crystal growth inhibitor. These fabricated devices showed an enhanced power conversion efficiency (PCE) of ~6.55% at 45 degC under the simulated air mass 1.5 solar spectrum illuminations at 50 mW cm 2, and a superior long term stability. The cyanobiphenyl functionalized ionic crystal based electrolytes have expanded our vision to explore new types of all solid state electrolytes for high efficiency DSSCs.
author_names: Huizi Cao-Cen

Jie Zhao

Lihua Qiu

Dan Xu

Qing Li

Xiaojian Chen

Feng Yan
title: High performance all solid state dye sensitized solar cells based on cyanobiphenyl functionalized imidazolium type ionic crystals
year: 2012

abstract: An organic ionic crystal, 1 methyl 3 acetyl imidazolium iodide (MA II) was synthesized and applied into all solid state dye sensitized solar cells as electrolyte material. We adopted 1 methyl 3 propylimidazolium tetra fluoroborate as a crystal growth inhibitor, lithium bis trifluoro methanesulfonylimide as a charge transport enhancer, and 4 tert butyl pyridine as a carrier recombination inhibitor. The solar cell devices achieved the total conversion efficiencies of 2.6 and 2.0% under half a sun and one sun irradiation, respectively, showing a good stability even without any sealing and protection from ambient condition. The inner work mechanism of solar cell devices was analyzed by measuring the photovoltage, photocurrent transients, and the electrochemical impedance spectra. The results indicated that target solid state materials from liquid molten salts can be obtained ultimately through molecular design and adjustments of molecular structure, which can be used effectively in photoelectrical devices.
author_names: Yong Zhao

Jin Zhai

Jinling He

Xiao Chen

Li Chen

Libing Zhang

Yuxi Tian

Lei Jiang

Daoben Zhu
title: High Performance All Solid State Dye Sensitized Solar Cells Utilizing Imidazolium Type Ionic Crystal as Charge Transfer Layer
year: 2008