Selenium solubility in solid zinc selenide
- Authors: Tran K.C.1, Mozhevitina E.N.1, Potapova K.A.1, Levonovich B.N.1, Avetissov I.C.1
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Affiliations:
- Mendeleev University of Chemical Technology
- Issue: Vol 52, No 7 (2016)
- Pages: 643-649
- Section: Article
- URL: https://journals.rcsi.science/0020-1685/article/view/157745
- DOI: https://doi.org/10.1134/S0020168516070037
- ID: 157745
Cite item
Abstract
Selenium solubility in solid s-ZnSe (F43m) under mono- and divariant equilibrium conditions has been determined by a direct physicochemical method in the temperature range 850–1173 K. The maximum concentration of excess selenium is 3.76 × 10–4 mol of excess Se per mole of ZnSe at 1173 K. The homogeneity range of the s-ZnSe phase has been shown to be characterized by retrograde solubility at its Se-rich phase boundary. A model has been proposed for defect formation in nonstoichiometric s-ZnSe at temperatures in the range 963–1173 K and pSe2 pressures in the range 1.05 × 10]4 to 5.01 × 105 Pa according to which the dissolution of excess Se is accompanied by the formation of electrically neutral associated vacancy defects in the zinc sublattice.
About the authors
Khanh Cong Tran
Mendeleev University of Chemical Technology
Email: aich@rctu.ru
Russian Federation, Miusskaya pl. 9, Moscow, 125047
E. N. Mozhevitina
Mendeleev University of Chemical Technology
Email: aich@rctu.ru
Russian Federation, Miusskaya pl. 9, Moscow, 125047
K. A. Potapova
Mendeleev University of Chemical Technology
Email: aich@rctu.ru
Russian Federation, Miusskaya pl. 9, Moscow, 125047
B. N. Levonovich
Mendeleev University of Chemical Technology
Email: aich@rctu.ru
Russian Federation, Miusskaya pl. 9, Moscow, 125047
I. Ch. Avetissov
Mendeleev University of Chemical Technology
Author for correspondence.
Email: aich@rctu.ru
Russian Federation, Miusskaya pl. 9, Moscow, 125047
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