Effect of surface fields on luminescence of ZnS and ZnO crystals |
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| Authors: | V. A. Nikitenko E. A. Serov S. V. Mukhin S. G. Stoyukhin |
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| Affiliation: | (1) F?sica de la Materia Condensada, ETSII, 47011 Valladolid, Spain;(2) Sensors Directorate, Air Force Research Laboratory, Hanscom AFB, MA 01731, USA;(3) Solid State Scientific Corp., Nashua, NH 03049, USA; |
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| Abstract: | It is shown that changes in luminescence characteristics of zinc sulfide and oxide in the presence of external effects that alter the surface charge are associated with a change in the parameters of surface barriers and can be explained within the framework of a model that takes into account separation of recombining partners in the Schottky barriers. We suggest a barrier mechanism for the effect of the surface region of a crystal on experimentally measured luminescence parameters and show that errors occuring in the measurement of these parameters can reach 10% and greater, depending on the depth of penetration of light. Moscow State University of Railways, 15 Obraztsov Str., Moscow, 103055, Russia. Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 66, No. 6, pp. 804–808, November–December, 1999. |
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| Keywords: | luminescence barrier spectrum recombination photocharge deaxctitation absorption quenching |
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