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Diffusion of iodine in lead telluride
Author(s) -
Assenov R.,
Moshnikov V. A.,
Yaskov D. A.,
Andreev A. P.,
Bestaev M. A.
Publication year - 1987
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170220912
Subject(s) - lead telluride , telluride , annealing (glass) , isothermal process , iodine , electromotive force , iodide , materials science , diffusion , crystal (programming language) , analytical chemistry (journal) , chemistry , thermodynamics , inorganic chemistry , metallurgy , doping , chromatography , computer science , programming language , quantum mechanics , physics , optoelectronics
By using the non‐stationary thermal‐probe method, investigations were carrieed out on the distribution of the coefficient of thermal electromotive force along the depth of monocrystals of lead telluride, subjected to isothermal saturating annealing in vapours of alloying compositions. The alloying composition consisted of powdered lead telluride, synthesized by the iodide method, and contained elevated concentration of the metallic component and iodine. The PbTe monocrystals were obtained from the vapour phase and had a natural cut. The results of the investigations testify to considerable changes in the concentration of the electrically active proper defects within the entire volume of the crystals, this being obviously connected with diffusion of vacancies from the crystal volume.