Journal
CHEMPHYSCHEM
Volume 15, Issue 6, Pages 1194-1200Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.201301047
Keywords
energy conversion; hole transport; perovskite phases; solar cells; structure control
Funding
- Japan Science and Technology Agency (JST)
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Carbon double bond-free printed solar cells have been fabricated with the structure and , in which CuSCN acts as a hole conductor. The thickness of the CH3NH3PbI3 layer is controlled by a hot air flow during spin coating. The best conversion efficiency (4.86%) is obtained with . However, a thick CH3NH3PbI3 layer on CuSCN is better for light-exposure stability (100 mWcm(-2) AM 1.5) when not encapsulated. Without the CuSCN coverage, the black CH3NH3PbI3 crystal changes to yellow during the light-exposure stability test, which is due to the transformation of the CH3NH3PbI3 perovskite crystal into hexagonal PbI2.
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