Journal of Crystal Growth, Vol.490, 77-83, 2018
Low-temperature MOCVD deposition of Bi2Te3 thin films using Et2BiTeEt as single source precursor
Et2BiTeEt was used as single source precursor for the deposition of Bi2Te3 thin films on Si(1 0 0) substrates by metal organic chemical vapor deposition (MOCVD) at very low substrate temperatures. Stoichiometric and crystalline Bi2Te3 films were grown at 230 degrees C, which is approximately 100 degrees C lower compared to conventional MOCVD processes using one metal organic precursors for each element. The Bi2Te3 films were characterized using scanning electron microscopy, high-resolution transmission electron microscopy and X-ray diffraction. The elemental composition of the films, which was determined by energy-dispersive Xray spectroscopy and X-ray photoelectron spectroscopy, was found to be strongly dependent of the substrate temperature. (C) 2018 Elsevier B.V. All rights reserved.
Keywords:Metalorganic chemical vapor deposition;Bismuth compounds;Tellurides;Nanomaterials;Semiconducting materials