Photoluminescence properties of erbium-doped structures of silicon nanocrystals in silicon dioxide matrix

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• 作者：V.Yu. Timoshenko ; D.M. Zhigunov ; P.K. Kashkarov ; O.A. Shalygina ; S.A. Teterukov ; R.J. Zhang ; M. Zacharias ; M. Fujii and Sh. Hayashi
• 关键词：Optical spectroscopy ; Nanoparticles ; Colloids and quantum structures ; Optical properties
• 刊名：Journal of Non-Crystalline Solids
• 出版年：2006
• 出版时间：15 June 2006
• 年：2006
• 卷：352
• 期：9-20
• 页码：1192-1195
• 全文大小：157 K

文摘

We present a study of the photoluminescence (PL) of structures of Si nanocrystals (nc-Si) in erbium-doped amorphous silicon dioxide. It is shown that the energy of excitons confined in nc-Si of 2–5 nm sizes is efficiently transferred to Er³⁺ ions in surrounding SiO₂ and a strong PL line at 1.5 μm appears. At high excitation intensity the population inversion of Er³⁺ ion states is achieved. These results demonstrate good perspectives of Er-doped nc-Si/SiO₂ structures for possible applications in Si-based optical amplifiers and lasers.