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Electrodeposition of Crystalline and Photoactive Silicon Directly from Silicon Dioxide Nanoparticles in Molten CaCl 2
Author(s) -
Cho Sung Ki,
Fan FuRen F.,
Bard Allen J.
Publication year - 2012
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201206789
Subject(s) - silicon , eutectic system , materials science , molten salt , polycrystalline silicon , silicon dioxide , crystalline silicon , chemical engineering , nanoparticle , monocrystalline silicon , alloy , nanocrystalline silicon , inorganic chemistry , nanotechnology , metallurgy , chemistry , amorphous silicon , layer (electronics) , thin film transistor , engineering
Silicon for solar cells : Relatively pure, polycrystalline, and photoactive silicon was directly obtained from silicon dioxide nanoparticles (NP) by electrodeposition in molten CaCl 2 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 SiO 2 to silicon. The deposited silicon shows a p‐type behavior in photoelectrochemical measurements.