ZnO nanostructures grown by vapour-liquid-solid (VLS) method

Kataria, S and Singh, Yogesh and Siju, John and Jakeer, Khan and Chowdhury, P and Barshilia, Harish C (2011) ZnO nanostructures grown by vapour-liquid-solid (VLS) method. Technical Report. National Aerospace Laboratories.

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Abstract

Zinc oxide (ZnO) is a very promising material for diverse applications in electronics, optoelectronics, spintronics, transparent thin film transistors, high power devices and so on. ZnO and Mn doped ZnO nanostructures with different morphologies were grown via vapour-liquid-solid (VLS) method. Morphological, optical and magnetic behaviour studies were carried out using field emission scanning electron microscope (FE-SEM), micro-Raman, photoluminescence (PL) and vibrating sample magnetometer techniques, respectively. FE-SEM studies revealed the formation of nanowires, nanopillars, nanosheets of ZnO crystals. Raman measurements confirmed the formation of ZnO phase. PL measurements revealed a strong green emission at 536 nm exposing the oxygen deficiency in the ZnO nanostructures. Mn doping was found to affect the morphological, optical and magnetic properties of ZnO nanostructures. Mn doped ZnO nanoneedles exhibited ferromagnetism at room temperature. The significant changes in the properties of ZnO nanostructures after Mn doping are discussed in detail.

Item Type: Proj.Doc/Technical Report (Technical Report)
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Division/Department: Surface Engineering Division, Other, Surface Engineering Division, Surface Engineering Division, Surface Engineering Division, Surface Engineering Division
Depositing User: Dr. Harish C. Barshilia
Date Deposited: 15 Dec 2011 16:05
Last Modified: 15 Dec 2011 16:05
URI: http://nal-ir.nal.res.in/id/eprint/10149

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