Open AccessLarge‐scale fabrication and the optical properties of tower‐like zinc oxide structures
Author(s) -
Zhang Siwen,
Yin Bosi,
Jiao Yang,
Liu Yang,
Qu Fengyu,
Wu Xiang
Publication year - 2014
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2014.0081
Subject(s) - photoluminescence , materials science , microstructure , fabrication , scanning electron microscope , substrate (aquarium) , zinc , silicon , chemical engineering , nanotechnology , evaporation , diffraction , ultraviolet , oxide , optoelectronics , metallurgy , optics , composite material , oceanography , geology , medicine , alternative medicine , physics , pathology , engineering , thermodynamics
Large‐scale uniform ZnO nanotowers on silicon substrate have been prepared by the thermal evaporation method at 950°C using Au as the catalyst. The morphology and microstructure of the as‐synthesised ZnO nanotowers were characterised by scanning electron microscopy and X‐ray diffraction. The room temperature photoluminescence spectrum of the as‐synthesised ZnO nanotowers shows a strong ultraviolet emission peak at 380 nm and a weak green emission at 540 nm, revealing that there are a few deep‐level defects in the single ZnO structure. The growth mechanism of the as‐synthesised ZnO structures is also discussed.