Materials Reports  2020, Vol. 34 Issue (Z1): 7-12 |
| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Preparation of Dye-sensitized Solar Cell Photoanode Based on High Aspect RatioTiO2 Nanowires |
| YANG Lu1, GUO Min2, SONG Zhicheng1, LIU Dawei1, NI Yufeng1
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1 SPIC Solar Power Xi'an Co. Ltd., Xi'an 710100, China;
2 School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China |
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Abstract The stirring hydrothermal method was performed to synthesis the ultra-long bending TiO2 NWs, and the influence of stirring hydrothermal process on the morphology and structure of the nanowires were explored. On this basis, the high aspect ratio TiO2 NWs/TiO2 NP composite photoanodes were constructed. The dependence of the DSSC photoelectric properties on the content of TiO2 NWs was studied. The results indicated that, when the hydrothermal stirring rate was 800 r·min-1 and the reaction time was 24 h, the TiO2 NWs possessed significantly high length-diameter ratio was obtained. Due to the excellent electron transport properties and light scattering effect of TiO2 NWs, the performance of DSSC was greatly improved. When the content of TiO2 NWs was increased from 0% to 20%, the transport resistance of the cell reduced from 5.98 Ω·cm2 to 3.79 Ω·cm2 and the electron diffusion length increased correspondingly (from 22.66 μm to 45.98 μm),the efficiency of DSSC increased to 5.26%, an increase of 22.9%. As the content of nanowires continues to increase, the low dye loading leads to a reduction in current and conversion efficiency.
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Published: 01 July 2020
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| Fund:This work was financially supported by the National Natural Science Foundation of China (51502243). |
| About author:: Lu Yang received her B.E. degree in materials science and engineering from the Hebei University of Technology and M.E. degree in materials processing engineering from the Northwestern Polytechnical University, her research interests focus on the visible-light photocatalyst about TiO2 nanomaterials with Au NP, and the preparation of DSSC based on the TiO2 NWs/TiO2 NP. She has published two papers, applied one patent during school. After graduation, she was engaged in the research and development of silicon-based N-type TOPC on solar cells at SPIC Xi'an Solar Power Co., Ltd. |
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