钙钛矿(结构)
材料科学
钙钛矿太阳能电池
图层(电子)
太阳能电池
蒸发
复合材料
化学工程
光电子学
热力学
物理
工程类
作者
Kwangbae Kim,Taeyeul Park,Ohsung Song
出处
期刊:Korean Journal of Metals and Materials
[The Korean Institute of Metals and Materials]
日期:2018-04-05
卷期号:56 (4)
标识
DOI:10.3365/kjmm.2018.56.4.321
摘要
Changes in the properties of the hole transport layer (HTL) and the perovskite layer in a perovskite solar sell (PSC) were observed under various Au thermal evaporation conditions.We employed a conventional thermal evaporator with a distance of 30 cm between the source and substrate in a vacuum of 6 × 10 -6 torr.We prepared 70 nm-thick Au layers on PSCs by varying the evaporation condition: 60 W-90 min, 70 W-60 min, 80 W-25 min, 90 W-10 min, and 100 W-7 min.Subsequently, the photovoltaic properties of the PSC were measured for each deposition condition.Also, the microstructure of the HTL/perovskite was observed using a scanning electron microscope (SEM) and electron probe xray micro-analyzer (EPMA) after the Au layer was selectively removed.The most outstanding energy conversion efficiency (ECE) was measured for the 80 W-25 min condition.The ECE was extremely low at relatively low power-long time (60 W-90 min, 70 W-60 min) conditions, due to contamination of the HTL and the perovskite layers during the Au evaporation.The contamination was confirmed from the SEM and EPMA investigations.Moreover, even with high powered-short time (90 W-10 min, 100 W-7 min) conditions, the HTL underlayer of the electrode was damaged due to the high deposition energy.
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