A novel route for the preparation of CuSe and CuInSe_2 nanoparticles

摘要

Good quality, close to mono-dispersed, nanoparticles of CuSe and CuInSe_2 have been prepared from thermolysis reactions in tri-n-octylphosphine oxide (TOPO). Bis(diethyldiselenocarbamato)-copper(II) ([Cu(Se_2CNEt_2)_2]) was used to prepare CuSe and TOPSe, CuCl and InCl_3 were reacted to form CuInSe_2. HRTEM images showed that the particles have reasonable monodispersity and are crystalline. Clear lattice fringes were observed in single dots of CuInSe_2 (ca. 4 nm) and CuSe (ca. 16 nm). The particles are capped with TOPO and the SAED pattern showed cubic CuInSe_2 and hexagonal CuSe.