Phosphine-Free Synthesis of p-Type Copper(I) Selenide Nanocrystals in Hot Coordinating Solvents
Journal of the American Chemical Society2010Vol. 132(26), pp. 8912–8914
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Sasanka Deka, Alessandro Genovese, Yang Zhang, Karol Miszta, Giovanni Bertoni, Roman Krahne, Cinzia Giannini, Liberato Manna
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.
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