Sv. Makarenko et al., TRANSPORT PHENOMENA AND MODEL FOR LOCALIZED GAP STATES OF STRUCTURE-DISORDERED FILMS ON THE BASIS OF GERMANIUM TELLURIDE, Physica status solidi. a, Applied research, 143(2), 1994, pp. 353-359
The structure and electron transport properties of the compounds (GeTe
)1-x(R)x (where R = Y, Gd, Tb and x = 0 to 0.2) prepared as films and
gamma-irradiated are investigated. The optical absorption coefficient,
dc conductivity, stationary and non-stationary photoconductivity, dri
ft carrier mobility, photoluminescence, ESR spectra are measured. The
localized, states in the mobility of the initial a-GeTe and their vari
ation with the composition changes and gamma-irradiation are studied o
n the basis of experimental data and a suggested theoretical approach.