Density of states in a-Se from combined analysis of xerographic potentials and transient transport data
- 1 July 1988
- journal article
- research article
- Published by Taylor & Francis Ltd in Philosophical Magazine Letters
- Vol. 58 (1), 53-57
- https://doi.org/10.1080/09500838808214730
Abstract
A density of states diagram for the mobility gap of a-Se is constructed by self-consistent analyses of time-resolved xerographic residual and dark depletion potentials in both undoped and halogen- and alkali-doped Se films. These are then combined with analyses of transient transport data to reveal additional features adjacent to the mobility edges. The results are consistent with the suggested existence of oppositely charged diamagnetic defect pairs whose relative population can be significantly and systematically altered by association with halogens and alkalis.Keywords
This publication has 8 references indexed in Scilit:
- Disordered SemiconductorsPublished by Springer Science and Business Media LLC ,1987
- Microstripline transient photocurrents in a-Se: Structure resolved in shallow band-tail statesSolid State Communications, 1986
- Electrical behaviour of chemically modified amorphous Se studied by xerographic depletion dischargePhilosophical Magazine Part B, 1985
- Evidence of equilibrium native defect populations in amorphous chalcogenides from analyses of xerographic spectraPhilosophical Magazine Part B, 1984
- Prediction of the influence of additives on the density of valence-alternation centres in lone-pair semiconductorsPhilosophical Magazine Part B, 1978
- Valence-Alternation Model for Localized Gap States in Lone-Pair SemiconductorsPhysical Review Letters, 1976
- States in the gap and recombination in amorphous semiconductorsPhilosophical Magazine, 1975
- Onsager mechanism of photogeneration in amorphous seleniumPhysical Review B, 1975