M. Bugajski et al., WHOLE WAFER ASSESSMENT OF ELECTRONIC MATERIALS BY SCANNING PHOTOLUMINESCENCE AND SURFACE PHOTOVOLTAGE, Materials science & engineering. B, Solid-state materials for advanced technology, 20(1-2), 1993, pp. 186-189
In this paper, we describe apparatus for measuring photoluminescence (
PL) over the entire wafer and discuss specific examples related to the
evaluation of compound semiconductor materials. The origin of PL cont
rast in different cases is discussed and some physics underlying the P
L process is given. We also show how a combined use of a non-contact,
surface photovoltage (SPV) technique and scanning PL (SPL) can contrib
ute to our understanding of a variety of processing effects in silicon
.