材料科学
钙钛矿(结构)
卤化物
制作
能量转换效率
热稳定性
光伏系统
化学计量学
光电子学
化学工程
蒸发
矿物学
无机化学
化学
物理化学
生态学
替代医学
病理
工程类
物理
热力学
生物
医学
作者
Juan Li,Rongrong Gao,Fei Gao,Jie Lei,Haoxu Wang,Xin Wu,Jianbo Li,Hao Líu,Xiaodong Hua,Shengzhong Liu
标识
DOI:10.1016/j.jallcom.2019.152903
摘要
It is promising to improve the stability of organic–inorganic hybrid halide perovskite solar cells by using all-inorganic perovskite materials. Herein, a facile one-crucible single-source vacuum thermal evaporation (VTE) approach is developed, which is used to evaporate two different melting points materials CsBr (630 °C) and PbBr2 (370.6 °C) to deposit high-quality inorganic CsPbBr3 perovskite films. Molar ratio of PbBr2 to CsBr in their mixture in the crucible is a key factor influencing the stoichiometry, structure, photoelectrical and photovoltaic properties of the CsPbBr3 films. The other important factor is the thickness of the CsPbBr3 films. High-quality CsPbBr3 films with good uniformity and compact and large grains are prepared. Planar CsPbBr3 perovskite solar cells are fabricated giving a high power conversion efficiency of 8.65%. The fabricated CsPbBr3 solar cells exhibit a good stability in air without encapsulation. This study opens up the possibility to deposit multi-element compound thin films by facile single-source VTE of different melting points materials.
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