苯扎溴铵
氧化锡
锡
钙钛矿(结构)
氧化物
材料科学
氯化物
化学工程
化学
无机化学
冶金
色谱法
有机化学
工程类
作者
Xiaoyuan Jiang,Jihuai Wu,Ying Wang,Puzhao Yang,Qiang Ouyang,Wenxuan Hao,Wenhui Lin,Weihai Sun,Jihuai Wu,Miaoliang Huang
标识
DOI:10.1016/j.electacta.2024.144241
摘要
For planar perovskite solar cells (PSCs), tin oxide (SnO2) is a perfect electron transport material. However, owing to nanoparticle agglomeration and defects, the advantages of SnO2 cannot be effectively utilized. Herein, a cationic surfactant, benzalkonium chloride (BAC) is introduced into SnO2 precursor solution to prevent the aggregation of SnO2. Thus, a uniform and free of pinhole SnO2 electron transport layer (ETL) is obtained, which supports the formation of high-quality perovskite layer (PVK). The introduction of BAC adjusts the energy level of ETL and improves the electron transport in the buried interface. Moreover, the BAC-modification reduces and passivates the defects on the surface of SnO2 and perovskite films. Consequently, BAC-modified PSCs achieves a champion efficiency of 23.49% with an impressive fill factor of 84.50%. The unpackaged device maintains an initial efficiency of 91.4% after 1000 h of storage in dark at 25±5 °C and 25±5% relative humidity.
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