TY - JOUR
T1 - The Evolution of Photoluminescence Properties of PEA2SnI4 Upon Oxygen Exposure
T2 - Insight into Concentration Effects
AU - Ju, Yangyang
AU - Wu, Xian gang
AU - Huang, Sheng
AU - Dai, Guang
AU - Song, Tinglu
AU - Zhong, Haizheng
N1 - Publisher Copyright:
© 2021 Wiley-VCH GmbH
PY - 2022/1/10
Y1 - 2022/1/10
N2 - The time evolution of the photoluminescence properties in phenylethylammonium tin halide perovskite (PEA2SnI4) film as a function of oxygen concentration is reported. Photo-brightening and reversible photoluminescence quenching are observed in PEA2SnI4 film at ultralow oxygen concentration (< 1.5 vol%). In the case of 1.5 vol% < [O2] < 21 vol%, the photoluminescence emission of PEA2SnI4 film can be partially recovered after resetting the samples to nitrogen box. As the oxygen concentration further increases with the range of 21 to 95 vol%, the photoluminescence emission of PEA2SnI4 film is significantly quenched and can only be slightly recovered after removing it to the nitrogen box. By correlating the material characterizations and theoretical analysis, the interactions between PEA2SnI4 and oxygen contain physisorption and chemical reactions are illustrated. Depending on the oxygen concentration, the chemical reactions between PEA2SnI4 and oxygen can be reversible and/or irreversible. The insights into oxygen concentration effects provide a guideline to optimize the stability of PEA2SnI4 for achieving high-performance optoelectronic devices.
AB - The time evolution of the photoluminescence properties in phenylethylammonium tin halide perovskite (PEA2SnI4) film as a function of oxygen concentration is reported. Photo-brightening and reversible photoluminescence quenching are observed in PEA2SnI4 film at ultralow oxygen concentration (< 1.5 vol%). In the case of 1.5 vol% < [O2] < 21 vol%, the photoluminescence emission of PEA2SnI4 film can be partially recovered after resetting the samples to nitrogen box. As the oxygen concentration further increases with the range of 21 to 95 vol%, the photoluminescence emission of PEA2SnI4 film is significantly quenched and can only be slightly recovered after removing it to the nitrogen box. By correlating the material characterizations and theoretical analysis, the interactions between PEA2SnI4 and oxygen contain physisorption and chemical reactions are illustrated. Depending on the oxygen concentration, the chemical reactions between PEA2SnI4 and oxygen can be reversible and/or irreversible. The insights into oxygen concentration effects provide a guideline to optimize the stability of PEA2SnI4 for achieving high-performance optoelectronic devices.
UR - http://www.scopus.com/inward/record.url?scp=85116502433&partnerID=8YFLogxK
U2 - 10.1002/adfm.202108296
DO - 10.1002/adfm.202108296
M3 - Article
AN - SCOPUS:85116502433
SN - 1616-301X
VL - 32
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 2
M1 - 2108296
ER -
