Temperature-dependent excitonic photoluminescence of hybrid organometal halide perovskite films

Kewei Wu; Ashok Bera; Chun Ma; Yuanmin Du; Yang Yang; Liang Li; Tao Wu

doi:10.1039/c4cp03573a

Temperature-dependent excitonic photoluminescence of hybrid organometal halide perovskite films

Kewei Wu, Ashok Bera, Chun Ma, Yuanmin Du, Yang Yang, Liang Li, Tao Wu

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

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Abstract

Organometal halide perovskites have recently attracted tremendous attention due to their potential for photovoltaic applications, and they are also considered as promising materials in light emitting and lasing devices. In this work, we investigated in detail the cryogenic steady state photoluminescence properties of a prototypical hybrid perovskite CH3NH3PbI3-xClx. The evolution of the characteristics of two excitonic peaks coincides with the structural phase transition around 160 K. Our results further revealed an exciton binding energy of 62.3 ± 8.9 meV and an optical phonon energy of 25.3 ± 5.2 meV, along with an abnormal blue-shift of the band gap in the high-temperature tetragonal phase. This journal is

Original language	English (US)
Pages (from-to)	22476-22481
Number of pages	6
Journal	Phys. Chem. Chem. Phys.
Volume	16
Issue number	41
DOIs	https://doi.org/10.1039/c4cp03573a
State	Published - Sep 17 2014

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work is supported by King Abdullah University of Science and Technology (KAUST).

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1039/c4cp03573a

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abstract = "Organometal halide perovskites have recently attracted tremendous attention due to their potential for photovoltaic applications, and they are also considered as promising materials in light emitting and lasing devices. In this work, we investigated in detail the cryogenic steady state photoluminescence properties of a prototypical hybrid perovskite CH3NH3PbI3-xClx. The evolution of the characteristics of two excitonic peaks coincides with the structural phase transition around 160 K. Our results further revealed an exciton binding energy of 62.3 ± 8.9 meV and an optical phonon energy of 25.3 ± 5.2 meV, along with an abnormal blue-shift of the band gap in the high-temperature tetragonal phase. This journal is",

author = "Kewei Wu and Ashok Bera and Chun Ma and Yuanmin Du and Yang Yang and Liang Li and Tao Wu",

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T1 - Temperature-dependent excitonic photoluminescence of hybrid organometal halide perovskite films

AU - Wu, Kewei

AU - Bera, Ashok

AU - Ma, Chun

AU - Du, Yuanmin

AU - Yang, Yang

AU - Li, Liang

AU - Wu, Tao

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work is supported by King Abdullah University of Science and Technology (KAUST).

PY - 2014/9/17

Y1 - 2014/9/17

N2 - Organometal halide perovskites have recently attracted tremendous attention due to their potential for photovoltaic applications, and they are also considered as promising materials in light emitting and lasing devices. In this work, we investigated in detail the cryogenic steady state photoluminescence properties of a prototypical hybrid perovskite CH3NH3PbI3-xClx. The evolution of the characteristics of two excitonic peaks coincides with the structural phase transition around 160 K. Our results further revealed an exciton binding energy of 62.3 ± 8.9 meV and an optical phonon energy of 25.3 ± 5.2 meV, along with an abnormal blue-shift of the band gap in the high-temperature tetragonal phase. This journal is

AB - Organometal halide perovskites have recently attracted tremendous attention due to their potential for photovoltaic applications, and they are also considered as promising materials in light emitting and lasing devices. In this work, we investigated in detail the cryogenic steady state photoluminescence properties of a prototypical hybrid perovskite CH3NH3PbI3-xClx. The evolution of the characteristics of two excitonic peaks coincides with the structural phase transition around 160 K. Our results further revealed an exciton binding energy of 62.3 ± 8.9 meV and an optical phonon energy of 25.3 ± 5.2 meV, along with an abnormal blue-shift of the band gap in the high-temperature tetragonal phase. This journal is

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Temperature-dependent excitonic photoluminescence of hybrid organometal halide perovskite films

Abstract

Bibliographical note

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UN SDGs

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