R. Rizk et al., SPATIALLY-RESOLVED PHOTOLUMINESCENCE AND ELECTRON-BEAM-INDUCED CURRENT STUDIES OF A COINCIDENCE SIGMA=25 SILICON BICRYSTAL, Materials science & engineering. B, Solid-state materials for advanced technology, 24(1-3), 1994, pp. 184-187
Spatially resolved photoluminescence (PL) and electron-beam-induced cu
rrent (EBIC) measurements were performed on a heat-treated SIGMA = 25
silicon bicrystal at 4.2 and 300 K. The early stages of both profiles
across the grain boundary (GB) obtained for PL and EBIC scans were int
erpreted in terms involving the existence of a denuded zone on either
side of the GB. Otherwise, a dissociation mechanism, due to GB precipi
tates, of the condensed and free excitons is evidenced and has led to
the determination of the spatial distribution of these particles.