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Efficiency enhancement of solid‐state dye sensitized solar cell by in situ deposition of CuI |
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| Authors: | Jing Han Jin Mao Chen Xiao Wen Zhou Yuan Lin Jing Bo Zhang Jian Guang Jia Babasaheb Raghunath Sankapal |
| Institution: | 1. Department of Chemistry, School of Science, Beijing University of Chemical Technology, Beijing 100029, China;2. Key Laboratory of Photochemistry, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;3. Department of Physics, North Maharashtra University, Umavinagar Jalgaon 425001, India |
| Abstract: | Solid‐state dye‐sensitized solar cells based on nanocrystalline TiO2 thin film with the structures TiO2/dye/CuI/Pt and TiO2/dye/In situ CuI/CuI/Pt were developed in order to compare the use of In situ deposited CuI (In situ CuI). Porosity of the screen‐printed nanoporous TiO2 thin film was enhanced by the addition of polystyrene balls. Evidence of decrease in interfacial resistance was observed by electrochemical impedance measurement for the device with In situ deposited CuI as compared to that without In situ deposited CuI as hole conductor. This was attributed to good interfacial contacts and better charge transfer between CuI and dye‐sensitized TiO2 nanoparticles, which resulted in the enhancement of power conversion efficiency from 0.058 to 1.01%. Copyright © 2008 John Wiley & Sons, Ltd. |
| Keywords: | in situ deposition of CuI screen‐printed TiO2 thin film solid‐state dye sensitized solar cell interfacial improvement efficiency enhancement |