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Dr. Sung Ki Cho, Dr. Fu-Ren F. Fan and Prof. Allen J. Bard Electrodeposition of Crystalline and Photoactive Silicon Directly from Silicon Dioxide Nanoparticles in Molten CaCl2 Angewandte Chemie International Edition 51

Version of Record online: 9 NOV 2012 | DOI: 10.1002/anie.201206789

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Silicon for solar cells: Relatively pure, polycrystalline, and photoactive silicon was directly obtained from silicon dioxide nanoparticles (NP) by electrodeposition in molten CaCl2 salt on a silver electrode (see picture). This process is based on the formation of liquid droplets of a silver–silicon eutectic alloy and the continuous reduction of SiO2 to silicon. The deposited silicon shows a p-type behavior in photoelectrochemical measurements.

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