钝化
能量转换效率
材料科学
钙钛矿太阳能电池
化学工程
相对湿度
太阳能电池
热稳定性
开路电压
纳米技术
光电子学
电压
电气工程
热力学
物理
图层(电子)
工程类
作者
Hyojung Kim,Jaegwan Sin,Moonhoe Kim,Gisung Kim,Mijoung Kim,Jae-Ho Kim,Gun Park,Bora Kim,Mun Seok Jeong,JungYup Yang
标识
DOI:10.1002/solr.202300825
摘要
Multiple‐cation perovskites have been extensively researched for stability enhancement, but limited literature exists on CsFAMA (CFM) solar cell stability under harsh temperature and humidity. This article focuses on the development of damp‐heat‐resistant CFM‐based perovskite solar cells (PSCs) through the implementation of various surface treatment strategies, including antisolvent treatment (AST) control and alkyl‐type interfacial passivation, while also proposing an effective encapsulation structure. The Cs + ratio in Cs x (FA 0.91 MA 0.09 ) 1− x Pb(I,Br) 3 perovskites is varied in the range of x = 0 to 0.362, and the AST times are explored by adjusting from 8 to 15 s. Remarkably, a power conversion efficiency (PCE) is achieved with significant improvements in open‐circuit voltage and fill factor at an AST time of 12 s. Through precise tuning of the Cs ratio to x = 0.17 (Cs 0.17 (FA 0.91 MA 0.09 ) 0.83 Pb(I,Br) 3 ) and introduction of an octyl‐ammonium iodide interlayer, the highest‐performing device with a PCE of 20.82% is obtained. Additionally, a low‐temperature vacuum lamination is employed, and the conducive tape in a twisted form is extended, which effectively seals the device. This results in superior stability for 500 h under damp‐heat conditions at 85 °C and 85% relative humidity. This encapsulation method holds significant promise as a potential solution for the modularization of PSCs.
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