Optical spectra and local order in amorphous TlCl and TlBr
- 1 December 1975
- journal article
- research article
- Published by Wiley in Physica Status Solidi (b)
- Vol. 72 (2) , 579-584
- https://doi.org/10.1002/pssb.2220720214
Abstract
The optical absorption spectra of amorphous TlCl and TlBr films are investigated in the photon energy range near the absorption edge. Annealing the films and tracing the spectra with annealing temperature discontinuous changes in the shape of the spectra are observed at two different annealing temperatures. A continuous random network model is presented for the structure of the amorphous TlCl and TlBr films, which is in agreement with recent structural data. The annealing dependence of the spectra is understood by assuming the existence of two disordered modifications with different short‐range order.Keywords
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