Low temperature and rapid deposition of ZnO nanorods on Si(100) substrate with tunable optical emissions

Sanjaya Brahma, J. L. Huang, C. P. Liu, L. M. Kukreja, S. A. Shivashankar

研究成果: Article

7 引文 斯高帕斯(Scopus)

摘要

This research article describes the large scale fabrication of ZnO nanorods of various shapes on Si(100) substrate, by using metalorganic precursor of Zn in solutions with microwave as the source of energy. This is a low temperature, environmental friendly and rapid thin film deposition process, where ZnO nanorods (1-3 μm length) were grown only in 1-5 min of microwave irradiation. All as-synthesized nanorods are of single crystalline grown along the <0001> crystallographic direction. The coated nanorods were found to be highly dense having a thickness of ∼1-3 μm over the entire area 20 mm × 20 mm of the substrate. The ZnO thin film comprising of nanorods exhibits good adhesion with the substrate. A possible mechanism for the initial nucleation and growth of ZnO is discussed. A cross over from a strong visible light emission to an enhanced UV emission is observed, when the nature of the surfactants are varied from polymeric to ionic and nonionic. The position of the chromaticity coordinates in yellow region of the color space gives an impression of white light generation from these coatings by exciting with a blue laser.

原文English
頁(從 - 到)634-642
頁數9
期刊Materials Chemistry and Physics
140
發行號2-3
DOIs
出版狀態Published - 2013 七月 15

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

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