材料科学
非阻塞I/O
介孔材料
钙钛矿(结构)
化学浴沉积
平面的
化学工程
钙钛矿太阳能电池
纳米技术
能量转换效率
光电子学
薄膜
催化作用
生物化学
计算机图形学(图像)
工程类
化学
计算机科学
作者
Jingsong Sun,Jianfeng Lu,Bin Li,Liangcong Jiang,Anthony S. R. Chesman,Andrew D. Scully,Thomas R. Gengenbach,Yi‐Bing Cheng,Jacek J. Jasieniak
出处
期刊:Nano Energy
[Elsevier]
日期:2018-07-01
卷期号:49: 163-171
被引量:91
标识
DOI:10.1016/j.nanoen.2018.04.026
摘要
The development of hole transporting layers that optimize charge extraction and minimize interfacial recombination losses offer an important route for further enhancement in the performance of inverted perovskite solar cells (PSCs). NiO is a widely adopted hole transporting material in such devices, possessing a reasonably high hole mobility and suitable energy level positions to provide high efficiency solar cells. However, its use in inverted PSCs has typically resulted in relatively low fill factors, which arises from underlying contact issues between the perovskite and NiO layers. In this work, we address this issue by employing a thin mesoporous NiO scaffold formed via chemical bath deposition as the hole transporting layer. This hole transporting material is found to dramatically improve the performance of inverted mixed cation and anion PSCs by enhancing their light harvesting and charge transporting efficiencies. Optimized devices achieve efficiencies of up to 16.7% and fill factors as high as 85%. These values are significantly higher than PSCs using conventionally spray-deposited planar NiO hole transport layers, which exhibit efficiencies of up to 14.5% and fill factors of only 73%.
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