Open-circuit Voltage Loss in CH3NH3SnI3 Perovskite Solar Cells

Open-circuit Voltage Loss in CH3NH3SnI3 Perovskite Solar Cells

Organic–inorganic perovskite solar cells based on tin halides exhibit a small open-circuit voltage (VOC) because of a large photon energy loss from band-gap energy, as large as 0.8–1.0 eV. In this study, we discussed the origin of the VOC loss in CH3NH3SnI3-based devices by measuring the temperature...

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Veröffentlicht in:Chemistry letters 2017, Vol.46 (2), p.253-256
Hauptverfasser: Hyung Do Kim, Miyamoto, Yoshihiro, Kubota, Hirofumi, Yamanari, Toshihiko, Ohkita, Hideo
Format: Artikel
Sprache:eng
Schlagworte:
Energy dissipation
Energy gap
Halides
Measuring instruments
Open circuit voltage
Perovskite Solar Cells
Perovskites
Photovoltaic cells
Solar cells
Temperature dependence
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Zusammenfassung:Organic–inorganic perovskite solar cells based on tin halides exhibit a small open-circuit voltage (VOC) because of a large photon energy loss from band-gap energy, as large as 0.8–1.0 eV. In this study, we discussed the origin of the VOC loss in CH3NH3SnI3-based devices by measuring the temperature dependence of VOC. As a result, we found that the large loss in VOC is mainly due to the surface recombination at the interface rather than the bulk recombination in the perovskites.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.160994