联氨(抗抑郁剂)
手套箱
能量转换效率
钙钛矿(结构)
平面的
异质结
材料科学
纳米技术
化学工程
化学
光电子学
计算机科学
有机化学
工程类
色谱法
计算机图形学(图像)
作者
Wei Chen,Wenxiu Du,Yanan Sun,Hui Zhang,Xin Zhang,Yiqiang Zhan,Zhengyi Sun
出处
期刊:ACS applied electronic materials
[American Chemical Society]
日期:2021-12-14
卷期号:3 (12): 5211-5218
被引量:3
标识
DOI:10.1021/acsaelm.1c00596
摘要
Hole transport material (HTM)-free carbon-based perovskite solar cells (C-PSCs) have attracted much attention due to their low cost and high stability since first reported in 2013. However, the efficiency issues still need to be addressed to increase the commercial competitiveness. Here we make the HTM-free C-PSCs with a simple and low-cost planar-heterojunction structure, comprising compact SnO2, simple equimolar CH3NH3I + PbI2 perovskite precursors, and commercial carbon paste, by the one-step solution method. During the preparation process, only the perovskite layer needs to be prepared in the glovebox, while other functional layers are completed in the air. The performance of the device can be greatly improved by introducing hydrazine acetate as the additive in the perovskite precursor solution. With the optimal ratio, the C-PSCs achieve an average power conversion efficiency (PCE) of 10.91 ± 0.3%, and the champion device shows a satisfying PCE of 11.30%, which increases remarkably by as much as 106% compared with the pristine control device. All the C-PSCs retain 100% of the initial performance after storage under ambient conditions without encapsulation for more than 120 days.
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