Depth Profiling of Defects in He Implanted SiO₂

Sn-loss effect in a Sn-implanted a-SiO2 host-matrix after thermal annealing: A combined XPS, PL, and DFT study

“…Technologically-modified a-SiO 2 matrices have been studied intensively in recent decades for various applications [6][7][8][9][10][11][12]. These studies have yielded new luminescing properties, singleelectron effects, and a few optical nonlinearities, as well as establishing that structure imperfections (defects) that provoked nonlinear optical effects in the "defective" a-SiO 2 matrix (see Refs.…”

“…These studies have yielded new luminescing properties, singleelectron effects, and a few optical nonlinearities, as well as establishing that structure imperfections (defects) that provoked nonlinear optical effects in the "defective" a-SiO 2 matrix (see Refs. [11][12][13][14][15]). The concentration of defects in a-SiO 2 -hosts may be strongly decreased by post-annealing treatment that distorts the ordering type of embedded metal species as well as the microstructure of the final host-matrix.…”