doi: 10.1021/ja809598r.
Organometal halide perovskites as visible-light sensitizers for photovoltaic cells
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- PMID: 19366264
- DOI: 10.1021/ja809598r
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Organometal halide perovskites as visible-light sensitizers for photovoltaic cells
J Am Chem Soc.
.
Abstract
Two organolead halide perovskite nanocrystals, CH(3)NH(3)PbBr(3) and CH(3)NH(3)PbI(3), were found to efficiently sensitize TiO(2) for visible-light conversion in photoelectrochemical cells. When self-assembled on mesoporous TiO(2) films, the nanocrystalline perovskites exhibit strong band-gap absorptions as semiconductors. The CH(3)NH(3)PbI(3)-based photocell with spectral sensitivity of up to 800 nm yielded a solar energy conversion efficiency of 3.8%. The CH(3)NH(3)PbBr(3)-based cell showed a high photovoltage of 0.96 V with an external quantum conversion efficiency of 65%.
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