SnCl_(2)界面修饰全无机CsPbBr_(3)钙钛矿太阳能电池的制备  

Fabrication of all-inorganic CsPbBr_(3) perovskite solar cells with SnCl_(2) interface modification

作　　者：殷逍遥 朱文昊 施谱垚 李宗盛 王艺超 朱能敏 汪杨 孙伟海 YIN Xiaoyao;ZHU Wenhao;SHI Puyao;LI Zongsheng;WANG Yichao;ZHU Nengmin;WANG Yang;SUN Weihai(Engineering Research Center of Environment-Friendly Functional Materials,Ministry of Education,Fujian Key Laboratory of Photoelectric Functional Materials,Institute of Materials Physical Chemistry,School of Materials Science and Engineering,Huaqiao University,Xiamen,Fujian 361021,China)

机构地区：[1]华侨大学材料科学与工程学院,物理化学研究所,环境友好功能材料教育部工程研究中心,福建省光电功能材料重点实验室,厦门361021

出　　处：《无机化学学报》2025年第3期469-479,共11页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.61804058);华侨大学中青年教师科研提升资助计划(ZQN-706)资助。

摘　　要：为了解决全无机CsPbBr_(3)钙钛矿太阳能电池中严重的载流子非辐射复合现象限制其光电转换效率提升的问题,通过在TiO_(2)电子传输层表面旋涂质量浓度为1.5 mg·mL^(-1)的SnCl_(2)溶液来有效改善钙钛矿薄膜的结晶性和表面形貌,从而降低光生载流子的非辐射复合,提高载流子的提取和传输能力。实验结果表明,通过对TiO_(2)表面施加SnCl_(2)进行修饰后,器件最高开路电压(open-circuit voltage,V_(OC))达到1.59 V,短路电流密度(short circuit current density,J_(SC))达到7.62 mA·cm^(-2),同时获得了81.35%的填充因子(fill factor,FF),光电转换效率(photoelectric conversion efficiency,PCE)也从8.01%提高至9.92%。To address the issue of charge carrier non-radiative recombination in CsPbBr_(3) perovskite solar cells,which limits the improvement of their photoelectric conversion efficiency,we propose a method of spin-coating a 1.5mg·m L^(-1)SnCl_(2) solution onto the TiO_(2) surface to effectively enhance the crystallinity and surface morphology of the perovskite film,thereby reducing non-radiative recombination of photogenerated carriers and improving carrier extraction and transport capabilities.Experimental results showed that modifying the TiO_(2) surface with SnCl_(2) increased the device's maximum open-circuit voltage(V_(OC))to 1.59 V,short-circuit current density(J_(SC))to 7.62 mA·cm^(-2),and fill factor(FF)of 81.35%.At the same time,the photoelectric conversion efficiency(PCE)improved from8.01%to 9.92%.

关 键 词：全无机CsPbBr_(3)钙钛矿太阳能电池 载流子 TiO_(2) 非辐射复合 SnCl_(2) 

分 类 号：TM914.4[电气工程—电力电子与电力传动] P578.491[天文地球—矿物学]