Premium
Vacuum Heat Treatment of CdS Single Crystals
Author(s) -
Böer K. W.,
Kennedy C. A.
Publication year - 1967
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19670190123
Subject(s) - annealing (glass) , quenching (fluorescence) , dissociation (chemistry) , materials science , conductance , vacancy defect , single crystal , analytical chemistry (journal) , crystallography , chemistry , condensed matter physics , fluorescence , metallurgy , optics , physics , chromatography
Abstract Changes of the spectral distribution of photoconductance and conductance glow curves after heat treatment between 370 and 620°K and immediate quenching of undoped CdS single crystal platelets in ultrahigh vacuo are described. After annealing, the electrical properties after heat‐treatment quenching sequences are largely reproducible. The results are interpreted as the dissociation of larger defect associates containing Cd vacancies and consequent production of single Cd vacancies causing a trap level at E c – E t ≈ 0.4 eV and vacancy pairs with trap levels at E c – E t ≈ 0.95 eV. Dissociation and stress enhanced diffusion of vacancies in the neighborhood of associates becomes noticeable at treatment temperatures above 350°K.