| 溶液微晶提升全无机CsPbIBr2钙钛矿的薄膜质量并减小碳基光伏器件内部载流子复合(英文) |
| |
| 作者姓名： | 闫福日 段加龙 郭琪瑶 张乔宇 杨希娅 杨培志 唐群委 |
| |
| 作者单位： | 1. College of Chemical and Biological Engineering, Shandong University of Science and Technology;2. Key Laboratory of Advanced Technique&Preparation for Renewable Energy Materials, Ministry of Education, Yunnan Normal University;3. College of Information Science and Technology, Jinan University |
| |
| 基金项目： | supported by the National Key Research and Development Program of China (2021YFE0111000)；;the National Natural Science Foundation of China (22109053, 22179051, U1802257, and 61504118)；;the Natural Science Foundation of Guangdong Province (2019B151502061)；;Guangzhou Science and Technology Planning Project (202102020775 and 202102010091)；;the Scientific Research Fund of Yunnan Provincial Department of Education (2022Y188)；;the Key Applied Basic Research Program of Yunnan Province (202201AS070023)； |
| |
| 摘 要： | 钙钛矿前驱体溶液的胶体特性决定了钙钛矿薄膜的质量以及钙钛矿太阳能电池的光电转换效率.在本文中,我们通过简单地调控钙钛矿溶液的温度,实现了钙钛矿薄膜质量的优化.系统的表征测试表明,与室温下的钙钛矿前驱体溶液不同,在高温条件下,钙钛矿前驱体溶液中会产生尺寸在一微米以上的稳定微晶,能够促进钙钛矿中间相的自发成核并实现薄膜的择优生长.薄膜质量优化后,由于缺陷态减少和晶粒尺寸增加,光生电荷能够快速地在大晶粒内部传输,降低晶粒内部的非辐射复合以及辐射复合,将电池效率提升至11.12%,明显高于未优化器件的8.51%.更重要的是,优化器件表现出非常优异的空气稳定性和高温稳定性.
|
|
|
