Preparation of SiO2 nanotubes with controllable inner/outer diameter and length using hydrothermally grown ZnO nanowires as templates

Der Ming Kuo, Shui-Jinn Wang, Kai Ming Uang, Tron Min Chen, Wei Chih Tsai, Wen I. Hsu, Wei Chi Lee, Pei Ren Wang, Chih Ren Tseng

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Through the deposition of a thin SiO2 film to sheathe hydrothermally grown (HTG) ZnO nanowires (ZnO-NWs), unveiling their top portion, and then selectively removing ZnO-NWs by wet chemical etching, SiO2 nanotubes (SiO2-NTs) with controllable inner/outer diameters and lengths were fabricated. The prepared SiO2-NTs with average inner/outer diameters and lengths of approximately 200/300 nm and 1.5 mm, respectively, exhibited a superior transmittance of 92% in the visible light spectrum. The surface roughened process using SiO2-NTs on vertical-structure GaN light-emitting diodes (VLEDs) showed additional light output improvement of about 11.6% at 350mA and 10% at 750mA, compared with those of VLEDs with ZnO-NWs, suggesting the effectiveness and promising applications of the proposed SiO2-NTs in optics and optoelectronics devices.

Original languageEnglish
Article number04DN10
JournalJapanese Journal of Applied Physics
Volume49
Issue number4 PART 2
DOIs
Publication statusPublished - 2010 Apr 1

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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