Preparation of SiO2Nanotubes with Controllable Inner/Outer Diameter and Length Using Hydrothermally Grown ZnO Nanowires as Templates

Autor:	Chih-Ren Tseng, Wei-Chih Tsai, Pei-Ren Wang, Wei-Chi Lee, Der-Ming Kuo, Kai-Ming Uang, Shui-Jinn Wang, Tron-Min Chen, Wen-I Hsu
Rok vydání:	2010
Předmět:	Outer diameter Materials science business.industry General Engineering Zno nanowires General Physics and Astronomy Isotropic etching Template Transmittance Optoelectronics business Deposition (law) Visible spectrum Diode
Zdroj:	Japanese Journal of Applied Physics. 49:04DN10
ISSN:	1347-4065 0021-4922
DOI:	10.1143/jjap.49.04dn10
Popis:	Through the deposition of a thin SiO2film to sheathe hydrothermally grown (HTG) ZnO nanowires (ZnO-NWs), unveiling their top portion, and then selectively removing ZnO-NWs by wet chemical etching, SiO2nanotubes (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 µm, 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 350 mA and 10% at 750 mA, compared with those of VLEDs with ZnO-NWs, suggesting the effectiveness and promising applications of the proposed SiO2-NTs in optics and optoelectronics devices.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c14c1ad7b867902fcfe31a6ef7f859df https://doi.org/10.1143/jjap.49.04dn10 Zobrazit plný text záznamu