... advance its applica-tions in photophysics and device physics.SiNW were synthesized by thermal evapora-tion from a mixture of silicon and silicon dioxidepowder [14,15]. The SiNWs deposited on a silicon wafer ... high transmission of both the ex-citation light and the PL emission with much lessloss. It is believed that during the deposition pro-cess, hydrocarbon and hydrogen ions react with silicon oxide ... [14,15]. However, problems of degradation[2,16,17] and low photoluminescence (PL) e-ciency [18] from the silicon nano-structures remainunsolved. The PL degradation, usually accompa-nied with a...