Temperature-dependent photoluminescence spectra and decay dynamics of MAPbBr3 and MAPbI3 thin films

Yiting Liu; Haizhou Lu; Jiaxin Niu; Huotian Zhang; Shitao Lou; Chunlei Gao; Yiqiang Zhan; Xiaolei Zhang; Qingyuan Jin; Lirong Zheng

doi:10.1063/1.5042489

Temperature-dependent photoluminescence spectra and decay dynamics of MAPbBr₃ and MAPbI₃ thin films

Yiting Liu
, Haizhou Lu
, Jiaxin Niu
, Huotian Zhang^*
, Shitao Lou
, Chunlei Gao
, Yiqiang Zhan
, Xiaolei Zhang
, Qingyuan Jin
, Lirong Zheng

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

100 Scopus citations

Abstract

The steady-state spectra and fluorescence lifetimes are investigated under vacuum for methylammonium lead bromide and iodide (CH₃NH₃PbBr₃ or MAPbBr₃, and CH₃NH₃PbI₃ or MAPbI₃) thin films by stably controlling the sample temperature in the range of 78 K to 320 K. The transformation of spectrum features and lifetime components are proved to be quite sensitive to the temperatures in accordance with the phase transition of structures. Our work demonstrates that the halide anions I^- and Br^- lead to remarkable differences on optical characteristics. Due to the distinct behaviors of excitons, electron-hole pairs and free carriers in decay channels, MAPbI₃ has much longer lifetime and higher low-temperature fluorescence efficiency than those of MAPbBr₃. The findings provide possible choices for certain perovskites under various ambient temperature conditions to display photovoltaic or luminescent advantage.

Original language	English
Article number	095108
Journal	AIP Advances
Volume	8
Issue number	9
DOIs	https://doi.org/10.1063/1.5042489
State	Published - 1 Sep 2018
Externally published	Yes

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10.1063/1.5042489

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title = "Temperature-dependent photoluminescence spectra and decay dynamics of MAPbBr3 and MAPbI3 thin films",

abstract = "The steady-state spectra and fluorescence lifetimes are investigated under vacuum for methylammonium lead bromide and iodide (CH3NH3PbBr3 or MAPbBr3, and CH3NH3PbI3 or MAPbI3) thin films by stably controlling the sample temperature in the range of 78 K to 320 K. The transformation of spectrum features and lifetime components are proved to be quite sensitive to the temperatures in accordance with the phase transition of structures. Our work demonstrates that the halide anions I- and Br- lead to remarkable differences on optical characteristics. Due to the distinct behaviors of excitons, electron-hole pairs and free carriers in decay channels, MAPbI3 has much longer lifetime and higher low-temperature fluorescence efficiency than those of MAPbBr3. The findings provide possible choices for certain perovskites under various ambient temperature conditions to display photovoltaic or luminescent advantage.",

author = "Yiting Liu and Haizhou Lu and Jiaxin Niu and Huotian Zhang and Shitao Lou and Chunlei Gao and Yiqiang Zhan and Xiaolei Zhang and Qingyuan Jin and Lirong Zheng",

note = "Publisher Copyright: {\textcopyright} 2018 Author(s).",

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doi = "10.1063/1.5042489",

language = "英语",

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TY - JOUR

T1 - Temperature-dependent photoluminescence spectra and decay dynamics of MAPbBr3 and MAPbI3 thin films

AU - Liu, Yiting

AU - Lu, Haizhou

AU - Niu, Jiaxin

AU - Zhang, Huotian

AU - Lou, Shitao

AU - Gao, Chunlei

AU - Zhan, Yiqiang

AU - Zhang, Xiaolei

AU - Jin, Qingyuan

AU - Zheng, Lirong

PY - 2018/9/1

Y1 - 2018/9/1

N2 - The steady-state spectra and fluorescence lifetimes are investigated under vacuum for methylammonium lead bromide and iodide (CH3NH3PbBr3 or MAPbBr3, and CH3NH3PbI3 or MAPbI3) thin films by stably controlling the sample temperature in the range of 78 K to 320 K. The transformation of spectrum features and lifetime components are proved to be quite sensitive to the temperatures in accordance with the phase transition of structures. Our work demonstrates that the halide anions I- and Br- lead to remarkable differences on optical characteristics. Due to the distinct behaviors of excitons, electron-hole pairs and free carriers in decay channels, MAPbI3 has much longer lifetime and higher low-temperature fluorescence efficiency than those of MAPbBr3. The findings provide possible choices for certain perovskites under various ambient temperature conditions to display photovoltaic or luminescent advantage.

AB - The steady-state spectra and fluorescence lifetimes are investigated under vacuum for methylammonium lead bromide and iodide (CH3NH3PbBr3 or MAPbBr3, and CH3NH3PbI3 or MAPbI3) thin films by stably controlling the sample temperature in the range of 78 K to 320 K. The transformation of spectrum features and lifetime components are proved to be quite sensitive to the temperatures in accordance with the phase transition of structures. Our work demonstrates that the halide anions I- and Br- lead to remarkable differences on optical characteristics. Due to the distinct behaviors of excitons, electron-hole pairs and free carriers in decay channels, MAPbI3 has much longer lifetime and higher low-temperature fluorescence efficiency than those of MAPbBr3. The findings provide possible choices for certain perovskites under various ambient temperature conditions to display photovoltaic or luminescent advantage.

UR - https://www.scopus.com/pages/publications/85053436406

U2 - 10.1063/1.5042489

DO - 10.1063/1.5042489

M3 - 文章

AN - SCOPUS:85053436406

SN - 2158-3226

VL - 8

JO - AIP Advances

JF - AIP Advances

IS - 9

M1 - 095108

ER -

Temperature-dependent photoluminescence spectra and decay dynamics of MAPbBr₃ and MAPbI₃ thin films

Abstract

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