Carrier injection and recombination processes in perovskite CH3NH3PbI3 solar cells studied by electroluminescence spectroscopy

Taketo Handa; Makoto Okano; David M. Tex; Ai Shimazaki; Tomoko Aharen; Atsushi Wakamiya; Yoshihiko Kanemitsu

doi:10.1117/12.2212052

Carrier injection and recombination processes in perovskite CH₃NH₃PbI₃ solar cells studied by electroluminescence spectroscopy

Taketo Handa, Makoto Okano, David M. Tex, Ai Shimazaki, Tomoko Aharen, Atsushi Wakamiya, Yoshihiko Kanemitsu

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

Organic-inorganic hybrid perovskite materials, CH₃NH₃PbX₃ (X = I and Br), are considered as promising candidates for emerging thin-film photovoltaics. For practical implementation, the degradation mechanism and the carrier dynamics during operation have to be clarified. We investigated the degradation mechanism and the carrier injection and recombination processes in perovskite CH₃NH₃PbI₃ solar cells using photoluminescence (PL) and electroluminescence (EL) imaging spectroscopies. By applying forward bias-voltage, an inhomogeneous distribution of the EL intensity was clearly observed from the CH₃NH₃PbI₃ solar cells. By comparing the PL-and EL-images, we revealed that the spatial inhomogeneity of the EL intensity is a result of the inhomogeneous luminescence efficiency in the perovskite layer. An application of bias-voltage for several tens of minutes in air caused a decrease in the EL intensity and the conversion efficiency of the perovskite solar cells. The degradation mechanism of perovskite solar cells under bias-voltage in air is discussed.

Original language	English
Title of host publication	Organic Photonic Materials and Devices XVIII
Publisher	SPIE
Volume	9745
ISBN (Electronic)	9781628419801
DOIs	https://doi.org/10.1117/12.2212052
Publication status	Published - 2016
Externally published	Yes
Event	Organic Photonic Materials and Devices XVIII - San Francisco, United States Duration: 2016 Feb 15 → 2016 Feb 17

Other

Other	Organic Photonic Materials and Devices XVIII
Country	United States
City	San Francisco
Period	16/2/15 → 16/2/17

Keywords

degradation
electroluminescence
Organic-inorganic hybrid
perovskite solar cells
photoluminescence

ASJC Scopus subject areas

Applied Mathematics
Computer Science Applications
Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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Carrier injection and recombination processes in perovskite CH₃NH₃PbI₃ solar cells studied by electroluminescence spectroscopy. / Handa, Taketo; Okano, Makoto; Tex, David M.; Shimazaki, Ai; Aharen, Tomoko; Wakamiya, Atsushi; Kanemitsu, Yoshihiko.

Organic Photonic Materials and Devices XVIII. Vol. 9745 SPIE, 2016. 97451I.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Handa, T, Okano, M, Tex, DM, Shimazaki, A, Aharen, T, Wakamiya, A & Kanemitsu, Y 2016, Carrier injection and recombination processes in perovskite CH₃NH₃PbI₃ solar cells studied by electroluminescence spectroscopy. in Organic Photonic Materials and Devices XVIII. vol. 9745, 97451I, SPIE, Organic Photonic Materials and Devices XVIII, San Francisco, United States, 16/2/15. https://doi.org/10.1117/12.2212052

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title = "Carrier injection and recombination processes in perovskite CH3NH3PbI3 solar cells studied by electroluminescence spectroscopy",

abstract = "Organic-inorganic hybrid perovskite materials, CH3NH3PbX3 (X = I and Br), are considered as promising candidates for emerging thin-film photovoltaics. For practical implementation, the degradation mechanism and the carrier dynamics during operation have to be clarified. We investigated the degradation mechanism and the carrier injection and recombination processes in perovskite CH3NH3PbI3 solar cells using photoluminescence (PL) and electroluminescence (EL) imaging spectroscopies. By applying forward bias-voltage, an inhomogeneous distribution of the EL intensity was clearly observed from the CH3NH3PbI3 solar cells. By comparing the PL-and EL-images, we revealed that the spatial inhomogeneity of the EL intensity is a result of the inhomogeneous luminescence efficiency in the perovskite layer. An application of bias-voltage for several tens of minutes in air caused a decrease in the EL intensity and the conversion efficiency of the perovskite solar cells. The degradation mechanism of perovskite solar cells under bias-voltage in air is discussed.",

keywords = "degradation, electroluminescence, Organic-inorganic hybrid, perovskite solar cells, photoluminescence",

author = "Taketo Handa and Makoto Okano and Tex, {David M.} and Ai Shimazaki and Tomoko Aharen and Atsushi Wakamiya and Yoshihiko Kanemitsu",

year = "2016",

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T1 - Carrier injection and recombination processes in perovskite CH3NH3PbI3 solar cells studied by electroluminescence spectroscopy

AU - Handa, Taketo

AU - Okano, Makoto

AU - Tex, David M.

AU - Shimazaki, Ai

AU - Aharen, Tomoko

AU - Wakamiya, Atsushi

AU - Kanemitsu, Yoshihiko

PY - 2016

Y1 - 2016

N2 - Organic-inorganic hybrid perovskite materials, CH3NH3PbX3 (X = I and Br), are considered as promising candidates for emerging thin-film photovoltaics. For practical implementation, the degradation mechanism and the carrier dynamics during operation have to be clarified. We investigated the degradation mechanism and the carrier injection and recombination processes in perovskite CH3NH3PbI3 solar cells using photoluminescence (PL) and electroluminescence (EL) imaging spectroscopies. By applying forward bias-voltage, an inhomogeneous distribution of the EL intensity was clearly observed from the CH3NH3PbI3 solar cells. By comparing the PL-and EL-images, we revealed that the spatial inhomogeneity of the EL intensity is a result of the inhomogeneous luminescence efficiency in the perovskite layer. An application of bias-voltage for several tens of minutes in air caused a decrease in the EL intensity and the conversion efficiency of the perovskite solar cells. The degradation mechanism of perovskite solar cells under bias-voltage in air is discussed.

AB - Organic-inorganic hybrid perovskite materials, CH3NH3PbX3 (X = I and Br), are considered as promising candidates for emerging thin-film photovoltaics. For practical implementation, the degradation mechanism and the carrier dynamics during operation have to be clarified. We investigated the degradation mechanism and the carrier injection and recombination processes in perovskite CH3NH3PbI3 solar cells using photoluminescence (PL) and electroluminescence (EL) imaging spectroscopies. By applying forward bias-voltage, an inhomogeneous distribution of the EL intensity was clearly observed from the CH3NH3PbI3 solar cells. By comparing the PL-and EL-images, we revealed that the spatial inhomogeneity of the EL intensity is a result of the inhomogeneous luminescence efficiency in the perovskite layer. An application of bias-voltage for several tens of minutes in air caused a decrease in the EL intensity and the conversion efficiency of the perovskite solar cells. The degradation mechanism of perovskite solar cells under bias-voltage in air is discussed.

KW - degradation

KW - electroluminescence

KW - Organic-inorganic hybrid

KW - perovskite solar cells

KW - photoluminescence

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BT - Organic Photonic Materials and Devices XVIII

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