Open AccessТвердофазные реакции и фазовые превращения в наноразмерной пленочной структуре висмут/селен
Author(s) -
В.Я. Когай,
Г.М. Михеев
Publication year - 2018
Publication title -
fizika i tehnika poluprovodnikov
Language(s) - English
Resource type - Journals
eISSN - 1726-7315
pISSN - 0015-3222
DOI - 10.21883/ftp.2018.08.46204.8735
Subject(s) - nanocrystalline material , crystallite , materials science , phase (matter) , nanoscopic scale , analytical chemistry (journal) , nanotechnology , chemistry , metallurgy , chromatography , organic chemistry
Experimental results of a study concerned with solid-phase reactions and phase transformations in a Bi/Se nanoscale film structure under heat treatment in vacuum are presented. Nanocrystalline Bi2Se3, BiSe, and Bi_4Se_3 films are obtained for the first time by solid-phase synthesis at various ratios between the Bi and Se layer thicknesses. The phase-transformation temperatures at which Se, BiSe, and Bi4Se3 crystalline phases are formed are determined. The average crystallite sizes in the Bi_2Se_3, BiSe, and Bi_4Se_3 films are found to be 21, 23, and 33 nm, respectively.