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 | |
| 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 |
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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
Cite this
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
}
TY - GEN
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
UR - http://www.scopus.com/inward/record.url?scp=84974851914&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84974851914&partnerID=8YFLogxK
U2 - 10.1117/12.2212052
DO - 10.1117/12.2212052
M3 - Conference contribution
AN - SCOPUS:84974851914
VL - 9745
BT - Organic Photonic Materials and Devices XVIII
PB - SPIE
ER -