Accession Number : ADP006751

Title :   Determination of the Mobility and Transport Properties of Photocarriers in BGO by the Time-of-Flight Technique,

Corporate Author : CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE TALENCE (FRANCE) LAB DE CHIMIE D U SOLIDE

Personal Author(s) : Tapiero, M. ; Ennouri, A. ; Zielinger, J. P. ; Vola, J. P.

Report Date : 22 MAY 1992

Pagination or Media Count : 4

Abstract : Sillenites are potentially a promising class of photorefractive materials for specific applications provided that crystals, insuring the corresponding optimal and reproducible operating characteristics, could be prepared. The first step in this direction is to measure and to check the reproducibility of the involved properties of the as-grown material obtained by the usual Czochralski technique which in fact works under relatively well defined conditions. In this respect, the determination of the mobility of photocarriers (electrons in BGO) and the knowledge of the mechanism of charge transport are of fundamental importance. Values for the mobility, mostly in BSO, ranging from 0.000001 to a few sq.cm. V(-1). s(-1) have been reported. Mobilities between 0.01 and 1 sq cm. V(-1). s(-1) usually indicate trap-limited band motion whereas lower values are more likely characteristic of multiple-trapping or hopping.

Descriptors :   *PHOTOELECTRONS, *ELECTRON TRANSPORT, CRYSTALS, DETERMINATION, MATERIALS, MOBILITY, MOTION, REPRODUCIBILITY, TRANSPORT, TRAPS, REFRACTION, ILLUMINATION, CHARGE CARRIERS, SYMPOSIA.

Subject Categories : Optics
      Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE