Published online by Cambridge University Press: 09 August 2011
Good quality, close to mono-dispersed, nanoparticles of CuSe and CuInSe2 have been prepared from thermolysis reactions in tri-n-octylphosphine oxide (TOPO). Bis(diethyldiselenocarbamato)-copper(II) ([Cu(Se2CNEt2] )2») was used to prepare CuSe and TOPSe, CuCI and InCl3 were reacted to form CuInSe2. HRTEM images showed that the particles have reasonable monodispersity and are crystalline. Clear lattice fringes were observed in single dots of CuInSe2 (ca. 4 nm) and CuSe (ca. 16 nm). The particles are capped with TOPO and the SAED pattern showed cubic CuInSe2 and hexagonal CuSe.