Observation of electronic spectra modulation in a CH3NH3PbBr3crystal by utilizing transient absorption microscopy

Tetsuro Katayama; Yuma Fujita; Yuichiro Akagi; Kangpeng Wang; Raphael Dahan; Tal Fishman; Ido Kaminer; Pankaj Koinkar; Akihiro Furube

doi:10.35848/1347-4065/acbc29

Observation of electronic spectra modulation in a CH₃NH₃PbBr₃crystal by utilizing transient absorption microscopy

Tetsuro Katayama, Yuma Fujita, Yuichiro Akagi, Kangpeng Wang, Raphael Dahan, Tal Fishman, Ido Kaminer, Pankaj Koinkar, Akihiro Furube

Technion - Israel Institute of Technology

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

Abstract

Organic-inorganic lead halide perovskite materials have attractive properties not only for solar cells but also for LED because of their high performance and wavelength tunability. Such an efficient light-emitting and lasing nature are indispensable for their applications, and the essential needs are miniaturization and low lasing threshold. One material that satisfies these requirements is lead halide perovskite. To understand the time evolution of the interaction between light and matter in a perovskite crystal system, it is necessary to reveal the carrier dynamics in each crystal. In this study, the transient absorption spectra of CH3NH3PbBr3 crystals were measured using a femtosecond transient absorption microscopy. Surprisingly, strong spectra modulation has been observed and these results indicate the charge separation on the surface of the crystal. Amplified spontaneous emission dynamics were also observed in the transient absorption spectra.

Original language	English
Article number	SG1030
Journal	Japanese Journal of Applied Physics
Volume	62
Issue number	SG
DOIs	https://doi.org/10.35848/1347-4065/acbc29
State	Published - 1 Jun 2023

Keywords

carrier dynamics
lead halide perovskite
time resolved measurement

All Science Journal Classification (ASJC) codes

General Engineering
General Physics and Astronomy

UN SDGs

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

Access to Document

10.35848/1347-4065/acbc29

Cite this

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title = "Observation of electronic spectra modulation in a CH3NH3PbBr3crystal by utilizing transient absorption microscopy",

abstract = "Organic-inorganic lead halide perovskite materials have attractive properties not only for solar cells but also for LED because of their high performance and wavelength tunability. Such an efficient light-emitting and lasing nature are indispensable for their applications, and the essential needs are miniaturization and low lasing threshold. One material that satisfies these requirements is lead halide perovskite. To understand the time evolution of the interaction between light and matter in a perovskite crystal system, it is necessary to reveal the carrier dynamics in each crystal. In this study, the transient absorption spectra of CH3NH3PbBr3 crystals were measured using a femtosecond transient absorption microscopy. Surprisingly, strong spectra modulation has been observed and these results indicate the charge separation on the surface of the crystal. Amplified spontaneous emission dynamics were also observed in the transient absorption spectra.",

keywords = "carrier dynamics, lead halide perovskite, time resolved measurement",

author = "Tetsuro Katayama and Yuma Fujita and Yuichiro Akagi and Kangpeng Wang and Raphael Dahan and Tal Fishman and Ido Kaminer and Pankaj Koinkar and Akihiro Furube",

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doi = "10.35848/1347-4065/acbc29",

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T1 - Observation of electronic spectra modulation in a CH3NH3PbBr3crystal by utilizing transient absorption microscopy

AU - Katayama, Tetsuro

AU - Fujita, Yuma

AU - Akagi, Yuichiro

AU - Wang, Kangpeng

AU - Dahan, Raphael

AU - Fishman, Tal

AU - Kaminer, Ido

AU - Koinkar, Pankaj

AU - Furube, Akihiro

PY - 2023/6/1

Y1 - 2023/6/1

N2 - Organic-inorganic lead halide perovskite materials have attractive properties not only for solar cells but also for LED because of their high performance and wavelength tunability. Such an efficient light-emitting and lasing nature are indispensable for their applications, and the essential needs are miniaturization and low lasing threshold. One material that satisfies these requirements is lead halide perovskite. To understand the time evolution of the interaction between light and matter in a perovskite crystal system, it is necessary to reveal the carrier dynamics in each crystal. In this study, the transient absorption spectra of CH3NH3PbBr3 crystals were measured using a femtosecond transient absorption microscopy. Surprisingly, strong spectra modulation has been observed and these results indicate the charge separation on the surface of the crystal. Amplified spontaneous emission dynamics were also observed in the transient absorption spectra.

AB - Organic-inorganic lead halide perovskite materials have attractive properties not only for solar cells but also for LED because of their high performance and wavelength tunability. Such an efficient light-emitting and lasing nature are indispensable for their applications, and the essential needs are miniaturization and low lasing threshold. One material that satisfies these requirements is lead halide perovskite. To understand the time evolution of the interaction between light and matter in a perovskite crystal system, it is necessary to reveal the carrier dynamics in each crystal. In this study, the transient absorption spectra of CH3NH3PbBr3 crystals were measured using a femtosecond transient absorption microscopy. Surprisingly, strong spectra modulation has been observed and these results indicate the charge separation on the surface of the crystal. Amplified spontaneous emission dynamics were also observed in the transient absorption spectra.

KW - carrier dynamics

KW - lead halide perovskite

KW - time resolved measurement

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