埋底界面的原位修饰制备高效钙钛矿太阳电池及组件  

Highly Efficient Perovskite Solar Cells and Modules Enabled by In-situ Modification of Buried Interface

作　　者：王瑶 黎伟乐 马梦恩 杨恢东[1] 陈谦 弓箭 刘冲 WANG Yao;LI Weile;MA Meng’en;YANG Huidong;CHEN Qian;GONG Jian;LIU Chong(Institute of New Energy Technology,College of Information Science and Technology,Jinan University,Guangzhou 510632,China;Faculty of Intelligent Manufacturing,Wuyi University,Jiangmen 529020,China)

机构地区：[1]暨南大学信息科学技术学院,新能源技术研究院,广东广州510632 [2]五邑大学智能制造学部,广东江门529020

出　　处：《发光学报》2025年第3期519-527,共9页Chinese Journal of Luminescence

基　　金：国家自然科学基金(62104082);广东省基础与应用基础研究基金(2022A1515010746);广州市科技计划(202201010458)。

摘　　要：反式钙钛矿太阳电池埋底界面的缺陷是制约太阳电池器件效率和稳定性的重要原因,使用有机小分子钝化界面可以有效减少界面的缺陷,降低载流子的非辐射复合。本文通过将一种钝化材料与自组装空穴传输材料结合,一步实现具有二维钙钛矿材料钝化的埋底界面,实现了效率的提升。最终,经埋底界面钝化,刮涂制备的钙钛矿太阳电池实现了21.42%的能量转换效率。同时,我们还制作了孔径面积为21.5 cm^(2)的太阳能光伏组件,得到了21.02%的效率,并在封装后在85℃和85%湿度条件下稳定运行了近1000 h,证明了该方法在大面积器件上的可拓展性和可靠性。The buried interface defects of inverted perovskite solar cells are a significant factor that can suppress the performance and lifetime of these solar cell devices.These defects can constrain the efficiency and stability,making it cru-cial to solve them for improved solar cell performance.Using organic small molecules as passivation materials has been shown to be an effective strategy to mitigate these interface defects,thereby reducing the non-radiative recombination of charge carriers.In this study,we have successfully integrated a kind of passivation material with a self-assembled hole transporting layer,enabling a one-step passivation of the buried interface with a two-dimensional perovskite material.Af-ter the deposition of the perovskite film,the number of excess lead iodide particles at the buried bottom interface was sig-nificantly reduced,and the presence of two-dimensional perovskite was detected,from which it can be hypothesized that the passivation material at the bottom reacted with the lead iodide to synthesize it.This innovative approach significantly improves the efficiency of solar cells,especially the Voc and device reproducibility due to the reduction of buried interface defects.Our results demonstrate that through the passivation of the buried interface,we were able to achieve an impres-sive efficiency of 21.42%by using blade coating.Furthermore,to validate the scalability and practicality of our method,we fabricated perovskite solar modules with an aperture area of 21.5 cm^(2).These modules achieved an efficiency of 21.02%and remained stable for almost 1000 h at 85℃and 85%humidity after proper encapsulation.The simplicity and efficiency of this process confirm the potential for large-scale applications in perovskite solar cell technology.

关 键 词：钙钛矿太阳电池 埋底界面 钝化 自组装单层 高效率 

分 类 号：TM914.4[电气工程—电力电子与电力传动]