Journal
CHEMISTRY LETTERS
Volume 46, Issue 2, Pages 253-256Publisher
CHEMICAL SOC JAPAN
DOI: 10.1246/cl.160994
Keywords
Perovskite solar cell; Tin halide; Surface recombination
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Funding
- Grants-in-Aid for Scientific Research [16J08768] Funding Source: KAKEN
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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.
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