CUED Publications database

Potential tuning of porous silicon luminescence

Meulenkamp, EA and Peter, LM and Riley, DJ and Wielgosz, RI and Penty, RV and Snow, PA and White, IH (1995) Potential tuning of porous silicon luminescence. IEE Colloquium (Digest). ISSN 0963-3308

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Electrochemical investigations were conducted of the effect of potential on the luminescence of porous silico (PS). The use of liquid contacts allows the potential to be controlled during studies of the photoluminescence (PL) and electroluminescence (EI). The PL and EL of PS samples prepared from n-type substrates is considered. To obtain luminescence from such PS it is necessary to generate holes in the valence band. This is achieved by either photoexcitation or an electrochemical process involving the reduction of persulfate. This paper describes the investigations of the effect of potential on the PL and EL of PS. A mechanism of 'potential tuning' based on electron occupancy and Auger quenching is then proposed.

Item Type: Article
Divisions: Div B > Photonics
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:03
Last Modified: 07 Aug 2018 03:26