DARK CONDUCTIVITY OF CDS AS A FUNCTION OF S-VAPOR PRESSURE DURING HEAT TREATMENT BETWEEN 500 AND 700 C.
Abstract
The dark conductivity of CdS as a function of the sulfur vapor pressure is investigated during heat treatment in a temperature range 500 < T < 700C. The pressure dependence follows j equivalent to (p sub S) to the minus 1/m power with m = lx, l being the average number of sulfur atoms per molecule. For 500 < T < 525C, x = 3, for 525 < T < 630C, x = 1 and for 630 < T < 700C, x = 1. These results are explained by thermodynamic disorder and a Cd-rich nonstoichiometric equilibrium below 525C. Schottky-Wagner disorder most probably is dominant above 525C. The energy of doubly ionizing a sulfur vacancy is E sub c - E sub (V sub s) = 0.48 ev. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1967
- Accession Number
- AD0661191
Entities
People
- Karl Wolfgang Boer
- W. J. Nalesnik
Organizations
- University of Delaware