材料科学
钙钛矿(结构)
三卤化物
制作
化学工程
光伏系统
异质结
佩多:嘘
溶剂
能量转换效率
双层
太阳能电池
混合太阳能电池
钙钛矿太阳能电池
纳米技术
卤化物
光电子学
聚合物太阳能电池
图层(电子)
无机化学
化学
有机化学
生态学
生物化学
替代医学
病理
膜
工程类
生物
医学
作者
Nam Joong Jeon,Jun Hong Noh,Young Chan Kim,Woon Seok Yang,Seungchan Ryu,Sang Il Seok
出处
期刊:Nature Materials
[Springer Nature]
日期:2014-07-06
卷期号:13 (9): 897-903
被引量:5783
摘要
Organolead trihalide perovskite materials have been successfully used as light absorbers in efficient photovoltaic cells. Two different cell structures, based on mesoscopic metal oxides and planar heterojunctions have already demonstrated very impressive advances in performance. Here, we report a bilayer architecture comprising the key features of mesoscopic and planar structures obtained by a fully solution-based process. We used CH3NH3 Pb(I(1-x)Br(x))3 (x = 0.1-0.15) as the absorbing layer and poly(triarylamine) as a hole-transporting material. The use of a mixed solvent of γ-butyrolactone and dimethylsulphoxide (DMSO) followed by toluene drop-casting leads to extremely uniform and dense perovskite layers via a CH3NH3I-PbI2-DMSO intermediate phase, and enables the fabrication of remarkably improved solar cells with a certified power-conversion efficiency of 16.2% and no hysteresis. These results provide important progress towards the understanding of the role of solution-processing in the realization of low-cost and highly efficient perovskite solar cells.
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