The present paper reports the steady state and transient photoconductivity
in amorphous Se80Te20 thin films before and after photocrystallization whic
h is induced by shining white light (1000 lux) for about 18 h. The results
indicate that the dark conductivity (sigma(d)) and steady state photoconduc
tivity (alpha(ph)) increase by many orders of magnitude on crystallization.
The transient behaviour is also affected on photocrystallization. (C) 1998
Elsevier Science S.A. All rights reserved.