Wilkinson, M.
(2011).
| DOI (Digital Object Identifier) Link: | https://doi.org/10.1209/0295-5075/96/67007 |
|---|---|
| Google Scholar: | Look up in Google Scholar |
Abstract
Experiments often show that the photoconductance σ of a semiconductor system and the light intensity I are related by σ~Iγ. Conventional theories give a satisfactory explanation for γ=1 or γ=1/2, but anamalous exponents close to γ=3/4 are often observed. This paper argues that there is a universal anomalous regime for which γ=3/4 (or γ=2/3 in two dimensions), resulting from the kinetics of electron-hole recombination being controlled by Coulombic attraction. Because the local electric fields are extremely high, the theory uses the "hot-carrier" model for transport.
| Item Type: | Article |
|---|---|
| Copyright Holders: | 2011 EPLA |
| ISSN: | 1286-4854 |
| Keywords: | Condensed matter; electrical, magnetic and optical; semiconductors; photoconduction and photovoltaic effects |
| Academic Unit/School: | Faculty of Science, Technology, Engineering and Mathematics (STEM) > Mathematics and Statistics Faculty of Science, Technology, Engineering and Mathematics (STEM) |
| Item ID: | 30916 |
| Depositing User: | Michael Wilkinson |
| Date Deposited: | 06 Jan 2012 15:45 |
| Last Modified: | 04 Oct 2016 11:10 |
| URI: | http://oro.open.ac.uk/id/eprint/30916 |
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