Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 118, Issue 30, Pages 16651-16659Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp412627n
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Funding
- JST CREST in Japan
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HOCO-R-NH3+I monolayer working as an anchor for perovskite (CH3NH3PbI3 (abbreviation: PEROVI3)) was inserted between the surface of porous metal oxide (titania or alumina) and the PEROVI3. Power conversion efficiency (PCE) of PEROVI3 solar cells increased from 8% to 10% after the HOCO-R-NH3+I- monolayer was inserted. Moreover, PCE of 12% was achieved for cells fabricated at optimized conditions. This increase in the efficiency was explained by retardation of charge recombination, and better PEROVI3 crystal growth, which improves PEROVI3 network on these porous metal oxides. It was proved that PEROVI3 crystal growth can be controlled by HOCO-R-NH3+I- on these porous metal oxides.
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