Luminescence studies of semiconductor electrodes

In this paper we review our recent results of in-situ luminescence studies of semiconductor electrodes. Three classes of materials are considered: sin gle crystal compound semiconductors, porous silicon and semiconducting oxid es doped with luminescent ions. We show how photoluminescence (PL) and elec troluminescence (EL) measurements can give information about the optical an d optoelectrical properties of the solid and about mechanisms of surface re actions. The relevance of time- and frequency-dependent measurements, which have been largely neglected, is stressed. (C) 1999 Elsevier Science Ltd. A ll rights reserved.