Implantation of the B+ and N+ ions or a B+ + N+ combination into silicon su
bstrates affects the photoluminescence properties of porous silicon (por-Si
) layers prepared on the ion-modified wafers. The postimplantation anneals
lead to significant changes in the per-Si emission bands. Models explaining
the observed phenomena are suggested. (C) 2000 MAIK "Nauka/Interperiodica"
.