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| CdBr2对CsPbBr3钙钛矿晶界处缺陷态调控及光电性能影响 | |
| 引用本文： | 刘文武,刘玉臣,崔重阳,牛晟韬,冉奋,阙郁伦. CdBr2对CsPbBr3钙钛矿晶界处缺陷态调控及光电性能影响[J]. 兰州理工大学学报, 2021, 47(5): 24 |
| 作者姓名： | 刘文武 刘玉臣 崔重阳 牛晟韬 冉奋 阙郁伦 |
| 作者单位： | 兰州理工大学 省部共建有色金属先进加工与再利用国家重点实验室,甘肃 兰州 730050;兰州理工大学 材料科学与工程学院,甘肃兰州 730050;国立清华大学 材料科学与工程系,台湾 新竹 30013;国立清华大学 基础知识与应用科学前沿研究中心,台湾 新竹30013 |
| 基金项目： | 甘肃省科技计划资助(21JR7RA256) |
| 摘 要： | 通过CdBr2对全无机CsPbBr3钙钛矿薄膜进行钝化处理,研究不同浓度CdBr2的异丙醇溶液对全无机CsPbBr3钙钛矿太阳能电池光电性能的影响.结果表明:CdBr2钝化CsPbBr3钙钛矿表面后,降低了钙钛矿表面的Br空位缺陷密度,抑制了非辐射复合,促进了光生电子和空穴的抽取和传输,因此降低了界面光电子复合损失,使全无机钙钛矿太阳能电池器件的光电转换效率从6.58%提高到8.19%,开路电压从1.368 V提高到1.531 V. |
| 关 键 词： | 全无机钙钛矿太阳能电池 CsPbBr3 缺陷钝化 PbBr2 |
| 收稿时间： | 2021-03-17 |
Effect of CdBr2 on defect state regulation and photoelectric properties of CsPbBr3 perovskite grain boundary |
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| LIU Wen-wu,LIU Yu-cheng,CUI Chong-yang,NIU Sheng-tao RAN Fen,QUE Yu-lun. Effect of CdBr2 on defect state regulation and photoelectric properties of CsPbBr3 perovskite grain boundary[J]. Journal of Lanzhou University of Technology, 2021, 47(5): 24 | |
| Authors: | LIU Wen-wu LIU Yu-cheng CUI Chong-yang NIU Sheng-tao RAN Fen QUE Yu-lun |
| Affiliation: | 1. State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou Univ. of Tech., Lanzhou 730050, China; 2. College of Materials Science and Engineering, Lanzhou Univ. of Tech.,Lanzhou 730050, China; 3. Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, China; 4. Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, China |
| Abstract: | The effects of different concentrations of isopropanol solution of CdBr2 on the photoelectric properties of CsPbBr3perovskite solar cells were studied by passivating CsPbBr3perovskite films with CdBr2. The results show that the introduction of CdBr2 to the surface of CsPbBr3perovskite, can decreases the density of defects at the surface, suppresses nonradiative recombination and promotes the extraction and diffusion of photogenerated electrons and holes. Therefore, the interface recombination loss is reduced. The photoelectric conversion efficiency of all inorganic CsPbBr3perovskite solar cell devices were increased from 6.58% to 8.19%, and the Vocwas increased from 1.368 V to 1.531 V. |
| Keywords: | all inorganic perovskite solar cell CsPbBr3 defect passivation PbBr2 |
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