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Phosphine-free synthesis of p-type copper(I) selenide nanocrystals in hot coordinating solvents
Sasanka Deka1, Alessandro Genovese, Yang Zhang
1Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy.
Journal of the American Chemical Society
|June 15, 2010
Abstract:
We report a phosphine-free synthesis of p-type copper(I) selenide nanocrystals by a colloidal approach in a mixture of oleylamine and 1-octadecene. The nanocrystals had a cuboctahedral shape and cubic berzelianite phase. Films of these nonstoichiometric copper-deficient Cu(2-x)Se nanocrystals were highly conductive and showed high absorption coefficient in the near-infrared region. These nanocrystals could be used as hole-injection layers in optoelectronic devices.

