Fernando Marianno, Wang Zhou, et al.
INFORMS 2021
We have studied the resistivity, optical absorption and photoconductivity of amorphous As2Te3 films prepared by e-beam evaporation of bulk material on substrates cooled to 77°K. Film thickness were typically several thousand angstroms, and chemical analysis indicated that the films were approximately stoichiometric. The films were stable up to about 450°K above which temperature they tended to devitrify. The resistivity between 200 and 400°K showed an exponential dependence of the resistivity on inverse temperature with an activation energy of 0.4 eV suggesting a "conductivity gap" of 0.8 eV. Optical absorption constants were determined for values of α between 104 and 2 × 105 cm-1 in the energy range from 1.0 to 1.6 eV. Photoconductivity measurements yielded an upper limit of 5 × 10-8 sec for the recombination time and a lower limit of 0.3 cm2/V sec for the mobility of photocarriers. © 1970.
Fernando Marianno, Wang Zhou, et al.
INFORMS 2021
O.F. Schirmer, W. Berlinger, et al.
Solid State Communications
R.J. Gambino, N.R. Stemple, et al.
Journal of Physics and Chemistry of Solids
Ellen J. Yoffa, David Adler
Physical Review B