Optical activation of Si nanowires using Er-doped, sol-gel derived silica

Kiseok Suh, Jung H. Shin, Oun Ho Park, Byeong Soo Bae, Jung Chul Lee, Heon Jin Choi

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Abstract

Optical activation of Si nanowires (Si-NWs) using sol-gel derived Er-doped silica is investigated. Si-NWs of about 100 nm diameter were grown on Si substrates by the vapor-liquid-solid method using Au catalysts and H2 diluted SiCl4. Afterwards, Er-doped silica sol-gel solution was spin-coated, and annealed at 950 °C in flowing N2 / O2 environment. Such Er-doped silica/Si-NWs nanocomposite is found to combine the advantages of crystalline Si and silica to simultaneously achieve both high carrier-mediated excitation efficiency and high Er3+ luminescence efficiency while at the same time providing high areal density of Er3+ and easy current injection, indicating the possibility of developing sol-gel activated Si-NWs as a material platform for Si-based photonics.

Original languageEnglish
Article number053101
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Volume86
Issue number5
DOIs
Publication statusPublished - 2005 Jan 31

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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