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Nano Lett. 2013 Apr 10;13(4):1764-9. doi: 10.1021/nl400349b. Epub 2013 Mar 21.

Chemical management for colorful, efficient, and stable inorganic-organic hybrid nanostructured solar cells.

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Division of Advanced Materials, Korea Research Institute of Chemical Technology, Yuseong-Gu, Daejeon, Korea.


Chemically tuned inorganic-organic hybrid materials, based on CH3NH3(═MA)Pb(I(1-x)Br(x))3 perovskites, have been studied using UV-vis absorption and X-ray diffraction patterns and applied to nanostructured solar cells. The band gap engineering brought about by the chemical management of MAPb(I(1-x)Br(x))3 perovskites can be controllably tuned to cover almost the entire visible spectrum, enabling the realization of colorful solar cells. We demonstrate highly efficient solar cells exhibiting 12.3% in a power conversion efficiency of under standard AM 1.5, for the most efficient device, as a result of tunable composition for the light harvester in conjunction with a mesoporous TiO2 film and a hole conducting polymer. We believe that the works highlighted in this paper represent one step toward the realization of low-cost, high-efficiency, and long-term stability with colorful solar cells.

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