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Facile synthesis of silver chalcogenide (Ag2E; E=Se, S, Te) semiconductor nanocrystals
Ayaskanta Sahu1, Lejun Qi, Moon Sung Kang
1Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Avenue SE, Minneapolis, Minnesota 55455, USA.
Journal of the American Chemical Society
|April 14, 2011
Abstract:
A general, one-pot, single-step method for producing colloidal silver chalcogenide (Ag(2)E; E = Se, S, Te) nanocrystals is presented, with an emphasis on Ag(2)Se. The method avoids exotic chemicals, high temperatures, and high pressures and requires only a few minutes of reaction time. While Ag(2)S and Ag(2)Te are formed in their low-temperature monoclinic phases, Ag(2)Se is obtained in a metastable tetragonal phase not observed in the bulk.
