Violation of Quasineutrality in Semiconductor Transport: The Dember Effect
Condensed Matter
2023-02-07 v1
Abstract
Exact solution of the linearized equations for steady-state transport in semiconductors yields two modes that vary exponentially in space, one involving screening (without entropy production) and one involving diffusion and recombination (with entropy production). Neither mode is quasineutral. For constant surface photoexcitation with generation of electrons and holes, the steady-state response is a linear combination of these modes, subject to global electroneutrality. The resultant charge separation produces a voltage difference across the sample (the Dember effect).
Keywords
Cite
@article{arxiv.cond-mat/0107152,
title = {Violation of Quasineutrality in Semiconductor Transport: The Dember Effect},
author = {Maja Krčmar and Wayne M. Saslow},
journal= {arXiv preprint arXiv:cond-mat/0107152},
year = {2023}
}