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%.

Keywords

ChemistryHalideNanocrystalline materialPerovskite (structure)Energy conversion efficiencyOptoelectronicsSemiconductorNanocrystalBand gapPhotovoltaic systemMesoporous materialSolar cellEnergy transformationVisible spectrumQuantum efficiencyPhotoelectrochemical cellPhotochemistryNanotechnologyInorganic chemistryElectrodeCatalysisMaterials sciencePhysical chemistryCrystallography

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Publication Info

Year
2009
Type
article
Volume
131
Issue
17
Pages
6050-6051
Citations
21628
Access
Closed

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Akihiro Kojima, Kenjiro Teshima, Yasuo Shirai et al. (2009). Organometal Halide Perovskites as Visible-Light Sensitizers for Photovoltaic Cells. Journal of the American Chemical Society , 131 (17) , 6050-6051. https://doi.org/10.1021/ja809598r

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DOI
10.1021/ja809598r