稳定的无机卤化铅铯纳米线钙钛矿电池
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| Published in: | 中国科学：材料科学（英文版） Vol. 60; no. 4; pp. 285 - 294 |
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| Main Author: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2017
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| Subjects: | |
| Online Access: | Get full text |
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| Bibliography: | ABX3-type organic-inorganic hybrid halide perovskite materials have been recognized as promising candidates for optoelectronic applications. However, poor stability of organic-inorganic hybrid perovskite hinders their forward long-term utilization and hence an effective strategy is needed to replace the organic part with an inorganic cation. Herein, all inorganic CsPbI3 nanowires with a di- ameter of 50-100 nm are synthesized on fluorine-doped tin oxide glass via a simple solution-dipping process, which are further transformed into CsPbBr3 nanowires through a so- lution-phase halide exchange method. A phase change from non-perovskite to perovskite structure is observed during the ion substitution process of I- by Br-, which is elaborated by X-ray diffraction, absorption and photoluminescence spectra. We for the first time apply the as-formed CsPbI3 and CsPbBr3 nanowires into perovskite solar cells, yielding power conversion efficiency of 0.11% and 1.21%, respectively. The inorganic CsPbBr3 nanowire solar cell shows impressive sta- bility which still remains 99% of the initial power conversion efficiency even after 5500 h aging. inorganic perovskite, nanowires, ion exchange, solarcells, long-term stability 10-1236/TB |
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| ISSN: | 2095-8226 2199-4501 |