抄録
The effects of Al doping on luminescence properties of Er ions (Er3+) in Er and Si nanoparticles co-doped SiO2 are studied. The purpose of Al doping is to improve concentration quenching of Er3+ luminescence and to realize higher concentration Er doping. We show that the concentration quenching is slightly improved by Al doping. However, the luminescence intensity is decreased. In order to clarify the mechanism of photoluminescence (PL) quenching by Al doping, the PL rise and decay time were analyzed. The result indicates that the number of optically active Er is decreased by AI doping.
