Structural Phase- and Degradation-Dependent Thermal Conductivity of CH3NH3PbI3 Perovskite Thin Films

Zhi Guo; Seog Joon Yoon; Joseph S. Manser; Prashant V. Kamat; Tengfei Luo

doi:10.1021/acs.jpcc.6b00513

Structural Phase- and Degradation-Dependent Thermal Conductivity of CH3NH3PbI3 Perovskite Thin Films

Zhi Guo, Seog Joon Yoon, Joseph S. Manser, Prashant V. Kamat, Tengfei Luo

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

59 Scopus citations

Abstract

Organic-inorganic lead halide perovskites have shown great promise in photovoltaics and optoelectronics. In these applications, device performance and reliability can be strongly influenced by thermal transport in the materials. Through laser pump-probe experiments, different microstructures of CH3NH3PbI3 perovskite thin films are found to give rise to different phonon scattering mechanism. The thermal conductivity in CH3NH3PbI3 neat film decreases with temperature. Even though this agrees with the behavior of its bulk crystalline counterparts, an apparent thermal conductivity change near the structural phase transition temperature of this perovskite (orthorhombic vs tetragonal) has only been observed in the spin-coated films. Analyses suggest that this may be attributed to either an energy landscape change related to organic cation disorder or the thickness change of ferroelectric domain walls formed in the neat perovskite films that affects the phonon scattering at the domain boundaries. In contrast, no thermal conductivity discontinuity has been observed in the CH3NH3PbI3/Al2O3 mesostructured films, where the thermal conductivity first shows an increasing trend at low temperature (

Original language	English (US)
Pages (from-to)	6394-6401
Number of pages	8
Journal	JOURNAL OF PHYSICAL CHEMISTRY C
Volume	120
Issue number	12
DOIs	https://doi.org/10.1021/acs.jpcc.6b00513
State	Published - Mar 16 2016
Externally published	Yes

Bibliographical note

KAUST Repository Item: Exported on 2022-05-31
Acknowledged KAUST grant number(s): OCRF-2014-CRG3-2268
Acknowledgements: This work was supported in part by the Sustainable Energy Initiative (SEI) and the start-up fund from University of Notre Dame, and National Science Foundation (2DARE 1433490). J.M. and P.V.K. acknowledge the support the support of King Abdullah University of Science and Technology (KAUST) through the award OCRF-2014-CRG3-2268. This is a document number NDRL5096 from the Notre Dame Radiation Laboratory, which is supported by the Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences of the U.S. Department of Energy through award DE-FC02-04ER15533.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

ASJC Scopus subject areas

Surfaces, Coatings and Films
General Energy
Physical and Theoretical Chemistry
Electronic, Optical and Magnetic Materials

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10.1021/acs.jpcc.6b00513

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title = "Structural Phase- and Degradation-Dependent Thermal Conductivity of CH3NH3PbI3 Perovskite Thin Films",

abstract = "Organic-inorganic lead halide perovskites have shown great promise in photovoltaics and optoelectronics. In these applications, device performance and reliability can be strongly influenced by thermal transport in the materials. Through laser pump-probe experiments, different microstructures of CH3NH3PbI3 perovskite thin films are found to give rise to different phonon scattering mechanism. The thermal conductivity in CH3NH3PbI3 neat film decreases with temperature. Even though this agrees with the behavior of its bulk crystalline counterparts, an apparent thermal conductivity change near the structural phase transition temperature of this perovskite (orthorhombic vs tetragonal) has only been observed in the spin-coated films. Analyses suggest that this may be attributed to either an energy landscape change related to organic cation disorder or the thickness change of ferroelectric domain walls formed in the neat perovskite films that affects the phonon scattering at the domain boundaries. In contrast, no thermal conductivity discontinuity has been observed in the CH3NH3PbI3/Al2O3 mesostructured films, where the thermal conductivity first shows an increasing trend at low temperature (",

author = "Zhi Guo and Yoon, {Seog Joon} and Manser, {Joseph S.} and Kamat, {Prashant V.} and Tengfei Luo",

note = "KAUST Repository Item: Exported on 2022-05-31 Acknowledged KAUST grant number(s): OCRF-2014-CRG3-2268 Acknowledgements: This work was supported in part by the Sustainable Energy Initiative (SEI) and the start-up fund from University of Notre Dame, and National Science Foundation (2DARE 1433490). J.M. and P.V.K. acknowledge the support the support of King Abdullah University of Science and Technology (KAUST) through the award OCRF-2014-CRG3-2268. This is a document number NDRL5096 from the Notre Dame Radiation Laboratory, which is supported by the Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences of the U.S. Department of Energy through award DE-FC02-04ER15533. This publication acknowledges KAUST support, but has no KAUST affiliated authors.",

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AU - Guo, Zhi

AU - Yoon, Seog Joon

AU - Manser, Joseph S.

AU - Kamat, Prashant V.

AU - Luo, Tengfei

N1 - KAUST Repository Item: Exported on 2022-05-31 Acknowledged KAUST grant number(s): OCRF-2014-CRG3-2268 Acknowledgements: This work was supported in part by the Sustainable Energy Initiative (SEI) and the start-up fund from University of Notre Dame, and National Science Foundation (2DARE 1433490). J.M. and P.V.K. acknowledge the support the support of King Abdullah University of Science and Technology (KAUST) through the award OCRF-2014-CRG3-2268. This is a document number NDRL5096 from the Notre Dame Radiation Laboratory, which is supported by the Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences of the U.S. Department of Energy through award DE-FC02-04ER15533. This publication acknowledges KAUST support, but has no KAUST affiliated authors.

PY - 2016/3/16

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N2 - Organic-inorganic lead halide perovskites have shown great promise in photovoltaics and optoelectronics. In these applications, device performance and reliability can be strongly influenced by thermal transport in the materials. Through laser pump-probe experiments, different microstructures of CH3NH3PbI3 perovskite thin films are found to give rise to different phonon scattering mechanism. The thermal conductivity in CH3NH3PbI3 neat film decreases with temperature. Even though this agrees with the behavior of its bulk crystalline counterparts, an apparent thermal conductivity change near the structural phase transition temperature of this perovskite (orthorhombic vs tetragonal) has only been observed in the spin-coated films. Analyses suggest that this may be attributed to either an energy landscape change related to organic cation disorder or the thickness change of ferroelectric domain walls formed in the neat perovskite films that affects the phonon scattering at the domain boundaries. In contrast, no thermal conductivity discontinuity has been observed in the CH3NH3PbI3/Al2O3 mesostructured films, where the thermal conductivity first shows an increasing trend at low temperature (

AB - Organic-inorganic lead halide perovskites have shown great promise in photovoltaics and optoelectronics. In these applications, device performance and reliability can be strongly influenced by thermal transport in the materials. Through laser pump-probe experiments, different microstructures of CH3NH3PbI3 perovskite thin films are found to give rise to different phonon scattering mechanism. The thermal conductivity in CH3NH3PbI3 neat film decreases with temperature. Even though this agrees with the behavior of its bulk crystalline counterparts, an apparent thermal conductivity change near the structural phase transition temperature of this perovskite (orthorhombic vs tetragonal) has only been observed in the spin-coated films. Analyses suggest that this may be attributed to either an energy landscape change related to organic cation disorder or the thickness change of ferroelectric domain walls formed in the neat perovskite films that affects the phonon scattering at the domain boundaries. In contrast, no thermal conductivity discontinuity has been observed in the CH3NH3PbI3/Al2O3 mesostructured films, where the thermal conductivity first shows an increasing trend at low temperature (

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ER -

Structural Phase- and Degradation-Dependent Thermal Conductivity of CH3NH3PbI3 Perovskite Thin Films

Abstract

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