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Highly efficient quasi-solid-state quantum-dot-sensitized solar cell based on hydrogel electrolytes |
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| Authors: | Zhexun Yu Quanxin Zhang Da Qin Yanhong Luo Dongmei Li Qing Shen Taro Toyoda Qingbo Meng |
| Institution: | 1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;2. Department of Engineering Science, Faculty of Informatics and Engineering, The University of Electrocommunicaitons, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan;3. PRESTO, Japan Science and Technology Agency, 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan |
| Abstract: | Chemically crosslinked polyacrylamide-based hydrogel has been first used as the polymer matrix to prepare quasi-solid-state polysulfide electrolyte for CdS/CdSe co-sensitized solar cells (QDSCs). The room temperature ionic conductivity of the gel electrolyte reaches 0.093 S·cm?1. QDSCs based on this quasi-solid-state electrolyte can present up to 4.0% of light-to-electricity conversion efficiency. Meanwhile, the interfacial recombination at TiO2/electrolyte interface of the cell is also investigated by Electrochemical Impedance Spectroscopy (EIS). |
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