材料科学
钙钛矿(结构)
兴奋剂
纳米晶
光伏
化学工程
二氧化锡
制作
水溶液
纳米技术
色散(光学)
钙钛矿太阳能电池
图层(电子)
光电子学
光伏系统
光学
物理化学
医学
生态学
化学
替代医学
物理
病理
工程类
冶金
生物
作者
Yao Wang,Menglei Feng,Haoran Chen,Meng Ren,Haifei Wang,Yanfeng Miao,Yuetian Chen,Yixin Zhao
标识
DOI:10.1002/adma.202305849
摘要
Tin dioxide (SnO2 ) with high conductivity and low photocatalytic activity has been reported as one of the best candidates for highly efficient electron transport layer (ETL) in perovskite solar cell (PSC). The state-of-the-art SnO2 layer is achieved by chemical bath deposition with tunable properties, while the commercial SnO2 nanocrystals (NCs) with low tunability still face the necessity of further improvement. Here, a kind of highly crystallized Cl-doped SnO2 NCs is reported that can form very stable aqueous dispersion with shelf life up to one year without any stabilizer, which can facilitate the fabrication of PSCs with satisfactory performance. Compared to the commercial SnO2 NCs regardless of the extrinsic Cl-doping conditions, the intrinsic Cl-doped SnO2 NCs effectively suppress the energy barrier and reduces the trap state density at the buried interface between perovskite and ETL. Consequently, stable PSCs based on such Cl-doped SnO2 NCs achieve a champion efficiency up to ≈25% for small cell (0.085 cm2 ) and ≈20% for mini-module (12.125 cm2 ), indicating its potential as a promising candidate for ETL in high-performance perovskite photovoltaics.
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