Phase transition mechanism of CsPbI2Br perovskite films induced by moisture

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期刊论文

作者：

Liu, Yufei;Lin, Jianting*;Han, Qiang;Yang, Chenggang;Li, Lin;...

通讯作者：

Lin, Jianting;Liu, XL;Yi, RN

作者机构：

[Liu, Yufei; Xiao, Jianrong] Guilin Univ Technol, Coll Phys & Elect Informat Engn, Guilin, Peoples R China.

[Han, Qiang; Lin, Jianting; Yang, Chenggang; Liu, Xiaoliang] Cent South Univ, Sch Phys, Changsha 410083, Peoples R China.

[Li, Lin] Cent South Univ Forestry & Technol, Coll Elect & Informat Engn, Changsha 410004, Peoples R China.

[Yi, Rongnan; Yi, RN] Testing Univ Hunan Prov, Key Lab Food & Environm & Drug Monitoring & Testin, Changsha 410138, Peoples R China.

通讯机构：

[Yi, RN ] T

[Lin, JT; Liu, XL ] C

Cent South Univ, Sch Phys, Changsha 410083, Peoples R China.

Testing Univ Hunan Prov, Key Lab Food & Environm & Drug Monitoring & Testin, Changsha 410138, Peoples R China.

语种：

英文

关键词：

Binding energy;Bromine compounds;Crystal structure;Crystallinity;Electronic structure;Evaporation;Film preparation;Moisture;Molecules;Perovskite;Perovskite solar cells;Semiconductor doping;Transparency;Co-evaporations;CsPbI2br perovskite film;Dual source;Dual-source co-evaporation;Moisture exposure;Moisture stability;Perovskite films;Phase transition mechanisms;Visible transparencies;Water molecule;Lead compounds

期刊：

Journal of Physics D: Applied Physics

ISSN：

0022-3727

年：

2024

卷：

期：

页码：

245103

DOI：

10.1088/1361-6463/ad31e2

基金类别：

National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809 [2022KY0258]; Project for Enhancing Young and Middle-aged Teacher's Research Basis Ability in Colleges of Guangxi [51673217]; National Natural Science Foundation of China [21A0160]; Education Department Key Program of Hunan Province

机构署名：

本校为其他机构

院系归属：

计算机与信息工程学院

摘要：

The humidity stability and phase transition mechanism of the all-inorganic perovskite CsPbI2Br based on an optimized dual-source co-evaporation preparation process are investigated at the film interface level. It is found that the CsPbI2Br films annealed at 300 °C for several minutes exhibit a best crystallinity and photoelectric properties. The as-grown CsPbI2Br film is confirmed to be a α phase with a dark brown cubic crystal structure and an average visible transparency of 35.9%. But it will be transformed into its δ phase with a transpar...

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Phase transition mechanism of CsPbI2Br perovskite films induced by moisture

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