Title: Experimental evidence for long-range potential fluctuations in a-Se films
Authors: Emelianova, EV
Song, HZ
Arkhipov, VI
Adriaenssens, Guy #
Issue Date: 2000
Series Title: Journal of non-crystalline solids vol:266 Part B pages:884-888
Abstract: Transient photocurrents are used to study the energy distribution of deep localized states in amorphous selenium films. The distribution of traps, as resolved from the post-transit time-of-flight photocurrent transients, reveals an apparent temperature dependence at temperatures less than 0 degrees C. However, no such temperature dependence of the trap-energy distribution was observed if this distribution is obtained from photocurrent transients measured in a gap-cell sample. We argue that this difference can be explained by the occurrence of long-range random potential fluctuations restricting access of carriers to some deep traps at lower temperatures. (C) 2000 Elsevier Science B.V. All rights reserved. Record 7 of 18 - CC Search(R) 7 Editions 2ND Quarter
ISSN: 0022-3093
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Semiconductor Physics Section
# (joint) last author

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