The electron state occupation and photoluminescence spectra from nanoscale Si particles

Abstract

The occupancy of higher electron energy levels under optical excitation is obtained by solving the Pauli master equation. The shift in peak positions with reducing average particle sizes L 0 for the PL spectra from nanoscale Si particles and luminescence centers in the oxide layer is different. The critical scale is estimated under a definite excitation. The critical scale is not a fixed size at which the PL intensity from Si and LCs equal to each other. On the contrary, it decreases for stronger excitation.