Light Emission Enhancement by Tuning the Structural Phase of APbBr                         3                          (A = CH                         3                         NH                         3                         , Cs) Perovskites

Yung Ji Choi; Lamjed Debbichi; Do Kyoung Lee; Nam Gyu Park; Hyungjun Kim; Dongho Kim

doi:10.1021/acs.jpclett.9b00829

Light Emission Enhancement by Tuning the Structural Phase of APbBr ₃ (A = CH ₃ NH ₃ , Cs) Perovskites

Yung Ji Choi, Lamjed Debbichi, Do Kyoung Lee, Nam Gyu Park, Hyungjun Kim, Dongho Kim

Department of Chemistry

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

11 Citations (Scopus)

Abstract

Lead halide perovskite (APbX ₃ ) has recently emerged as a promising active layer in light-emitting diodes (LEDs) as well as an absorber for photovoltaic devices. For better LED properties, it is important to understand the fundamental mechanism of the optoelectronic behaviors, e.g., how the nanostructure of the APbX ₃ thin film correlates with its emitting properties. We investigated the effect of APbBr ₃ (A = CH ₃ NH ₃ , Cs) crystallite size on the photophysical properties regarding its crystallographic changes and spin-orbit coupling. Photoluminescence lifetime measurements, X-ray and electron diffraction analyses, and density functional theory calculations were performed. We demonstrate that the emitting properties of mesoscale APbBr ₃ crystallites are improved due to the formation of a pure cubic phase that leads to the spin- and momentum-allowed carrier recombination. Our findings provide fundamental insights into the emitting behavior of APbBr ₃ , which suggests a control of its optoelectronic properties by means of modulating the crystal morphology and resultant electronic band structures.

Original language	English
Pages (from-to)	2135-2142
Number of pages	8
Journal	Journal of Physical Chemistry Letters
Volume	10
Issue number	9
DOIs	https://doi.org/10.1021/acs.jpclett.9b00829
Publication status	Published - 2019 May 2

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grants funded by the Ministry of Science, ICT Future Planning (MSIP) of Korea under Contracts NRF-2012M3A6A7054861 (Global Frontier R&D Program on Center for Multiscale Energy System) and in part by NRF-2016M3D1A1027663 (Future Materials Discovery Program). L.D. and H.K. also acknowledge the support from the Global Frontier R&D Program on Center for Hybrid Interface Materials (2013M3A6B1078884).

Publisher Copyright:
© 2019 American Chemical Society.

All Science Journal Classification (ASJC) codes

Materials Science(all)
Physical and Theoretical Chemistry

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This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1021/acs.jpclett.9b00829

Cite this

Choi, Y. J., Debbichi, L., Lee, D. K., Park, N. G., Kim, H., & Kim, D. (2019). Light Emission Enhancement by Tuning the Structural Phase of APbBr ₃ (A = CH ₃ NH ₃ , Cs) Perovskites Journal of Physical Chemistry Letters, 10(9), 2135-2142. https://doi.org/10.1021/acs.jpclett.9b00829

Choi, Yung Ji ; Debbichi, Lamjed ; Lee, Do Kyoung et al. / Light Emission Enhancement by Tuning the Structural Phase of APbBr ₃ (A = CH ₃ NH ₃ , Cs) Perovskites In: Journal of Physical Chemistry Letters. 2019 ; Vol. 10, No. 9. pp. 2135-2142.

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title = " Light Emission Enhancement by Tuning the Structural Phase of APbBr 3 (A = CH 3 NH 3 , Cs) Perovskites ",

abstract = " Lead halide perovskite (APbX 3 ) has recently emerged as a promising active layer in light-emitting diodes (LEDs) as well as an absorber for photovoltaic devices. For better LED properties, it is important to understand the fundamental mechanism of the optoelectronic behaviors, e.g., how the nanostructure of the APbX 3 thin film correlates with its emitting properties. We investigated the effect of APbBr 3 (A = CH 3 NH 3 , Cs) crystallite size on the photophysical properties regarding its crystallographic changes and spin-orbit coupling. Photoluminescence lifetime measurements, X-ray and electron diffraction analyses, and density functional theory calculations were performed. We demonstrate that the emitting properties of mesoscale APbBr 3 crystallites are improved due to the formation of a pure cubic phase that leads to the spin- and momentum-allowed carrier recombination. Our findings provide fundamental insights into the emitting behavior of APbBr 3 , which suggests a control of its optoelectronic properties by means of modulating the crystal morphology and resultant electronic band structures.",

author = "Choi, {Yung Ji} and Lamjed Debbichi and Lee, {Do Kyoung} and Park, {Nam Gyu} and Hyungjun Kim and Dongho Kim",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grants funded by the Ministry of Science, ICT Future Planning (MSIP) of Korea under Contracts NRF-2012M3A6A7054861 (Global Frontier R&D Program on Center for Multiscale Energy System) and in part by NRF-2016M3D1A1027663 (Future Materials Discovery Program). L.D. and H.K. also acknowledge the support from the Global Frontier R&D Program on Center for Hybrid Interface Materials (2013M3A6B1078884). Publisher Copyright: {\textcopyright} 2019 American Chemical Society.",

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Choi, YJ, Debbichi, L, Lee, DK, Park, NG, Kim, H & Kim, D 2019, ' Light Emission Enhancement by Tuning the Structural Phase of APbBr ₃ (A = CH ₃ NH ₃ , Cs) Perovskites ', Journal of Physical Chemistry Letters, vol. 10, no. 9, pp. 2135-2142. https://doi.org/10.1021/acs.jpclett.9b00829

Light Emission Enhancement by Tuning the Structural Phase of APbBr ₃ (A = CH ₃ NH ₃ , Cs) Perovskites . / Choi, Yung Ji; Debbichi, Lamjed; Lee, Do Kyoung et al.
In: Journal of Physical Chemistry Letters, Vol. 10, No. 9, 02.05.2019, p. 2135-2142.

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

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AU - Debbichi, Lamjed

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AU - Park, Nam Gyu

AU - Kim, Hyungjun

AU - Kim, Dongho

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grants funded by the Ministry of Science, ICT Future Planning (MSIP) of Korea under Contracts NRF-2012M3A6A7054861 (Global Frontier R&D Program on Center for Multiscale Energy System) and in part by NRF-2016M3D1A1027663 (Future Materials Discovery Program). L.D. and H.K. also acknowledge the support from the Global Frontier R&D Program on Center for Hybrid Interface Materials (2013M3A6B1078884). Publisher Copyright: © 2019 American Chemical Society.

PY - 2019/5/2

Y1 - 2019/5/2

N2 - Lead halide perovskite (APbX 3 ) has recently emerged as a promising active layer in light-emitting diodes (LEDs) as well as an absorber for photovoltaic devices. For better LED properties, it is important to understand the fundamental mechanism of the optoelectronic behaviors, e.g., how the nanostructure of the APbX 3 thin film correlates with its emitting properties. We investigated the effect of APbBr 3 (A = CH 3 NH 3 , Cs) crystallite size on the photophysical properties regarding its crystallographic changes and spin-orbit coupling. Photoluminescence lifetime measurements, X-ray and electron diffraction analyses, and density functional theory calculations were performed. We demonstrate that the emitting properties of mesoscale APbBr 3 crystallites are improved due to the formation of a pure cubic phase that leads to the spin- and momentum-allowed carrier recombination. Our findings provide fundamental insights into the emitting behavior of APbBr 3 , which suggests a control of its optoelectronic properties by means of modulating the crystal morphology and resultant electronic band structures.

AB - Lead halide perovskite (APbX 3 ) has recently emerged as a promising active layer in light-emitting diodes (LEDs) as well as an absorber for photovoltaic devices. For better LED properties, it is important to understand the fundamental mechanism of the optoelectronic behaviors, e.g., how the nanostructure of the APbX 3 thin film correlates with its emitting properties. We investigated the effect of APbBr 3 (A = CH 3 NH 3 , Cs) crystallite size on the photophysical properties regarding its crystallographic changes and spin-orbit coupling. Photoluminescence lifetime measurements, X-ray and electron diffraction analyses, and density functional theory calculations were performed. We demonstrate that the emitting properties of mesoscale APbBr 3 crystallites are improved due to the formation of a pure cubic phase that leads to the spin- and momentum-allowed carrier recombination. Our findings provide fundamental insights into the emitting behavior of APbBr 3 , which suggests a control of its optoelectronic properties by means of modulating the crystal morphology and resultant electronic band structures.

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Choi YJ, Debbichi L, Lee DK, Park NG, Kim H, Kim D. Light Emission Enhancement by Tuning the Structural Phase of APbBr ₃ (A = CH ₃ NH ₃ , Cs) Perovskites Journal of Physical Chemistry Letters. 2019 May 2;10(9):2135-2142. doi: 10.1021/acs.jpclett.9b00829