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Author Gautam, Khyati ♦ Nirwal, Varun Singh ♦ Singh, Joginder ♦ Peta, Koteswara Rao ♦ Bhatnagar, P. K. ♦ Singh, Inderpreet
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword NANOSCIENCE AND NANOTECHNOLOGY ♦ ELECTRON SCANNING ♦ GLASS ♦ HYDROTHERMAL SYNTHESIS ♦ INTERFACES ♦ LAYERS ♦ NANOSTRUCTURES ♦ OPTICAL PROPERTIES ♦ PHOTOLUMINESCENCE ♦ SCANNING ELECTRON MICROSCOPY ♦ SPECTRA ♦ STRAINS ♦ SUBSTRATES ♦ ULTRAVIOLET RADIATION ♦ X RADIATION ♦ X-RAY DIFFRACTION ♦ ZINC OXIDES
Abstract In this work, we have synthesized ZnO nanorods over ZnO seeds/ITO/glass substrate by the facile hydrothermal method. ZnO seeds are grown at different temperatures ranging from 150°C to 550°C in steps of 100°C. We have studied the effect of strain on the structural and optical properties of ZnO nanorods. It was observed that the growth temperature of seed layer has an influence over the lattice strain present in the nanorods. The as synthesized nanorods were characterized by scanning electron microscope (SEM), x-ray diffraction (XRD) and photoluminescence (PL). SEM images confirm the formation of dense arrays of vertically aligned nanorods on seeds which are grown at 350°C. In addition to this, XRD patterns reveal that these ZnO nanorods are preferentially oriented along (002) direction. The strain analysis based on the XRD results reveals that the minimum value of strain is obtained at 350°C which is attributed to the improved crystalline quality of the interface of seed layer and nanorods leading to their c-axis alignment and enhancement of ultraviolet emission as observed in the PL spectra.
ISSN 0094243X
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-05-06
Publisher Place United States
Volume Number 1728
Issue Number 1


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