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Title: Preparation, structural and optical characterization of ZnO, ZnO: Al nanopowder

In this paper, ZnO and ZnO:Al nanopowders have been synthesized by low cost hydrothermal method. Zinc nitrate, hexamethylenetetramine (HMT) and aluminium nitrate are used as precursors for ZnO and AZO with different molar ratios. The structural and optical characterization of doped and un-doped ZnO powders have been investigated by X-ray diffraction (XRD), Scanning electron microscopy (SEM), Energy dispersive X-ray spectroscopy (EDAX), photoluminescence (PL) and ultra violet visible (UV-Vis) absorption studies. The SEM results show that the hydrothermal synthesis can be used to obtain nanoparticles with different morphology. It is observed that the grain size of the AZO nanoparticles increased with increasing of Al concentration. The PL measurement of AZO shows that broad range of green emission around 550nm with high intensity. The green emission resulted mainly because of intrinsic defects.
Authors:
 [1] ;  [2] ;  [3]
  1. Department of ECE, Gojan School of Business and Technology, Chennai (India)
  2. Department of Electronics, Government Arts College for Women, Ramanathapuram, TN (India)
  3. Department of ECS, Sri Krishna Arts and Science College, Coimbatore, TN (India)
Publication Date:
OSTI Identifier:
22263996
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1576; Journal Issue: 1; Conference: OMTAT 2013: 2. international conference on optoelectronic materials and thin films for advanced technology, Kochi, Kerala (India), 3-5 Jan 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 77 NANOSCIENCE AND NANOTECHNOLOGY; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION; ALUMINIUM NITRATES; DOPED MATERIALS; GRAIN SIZE; HYDROTHERMAL SYNTHESIS; NANOSTRUCTURES; PARTICLES; PHOTOLUMINESCENCE; POWDERS; SCANNING ELECTRON MICROSCOPY; UROTROPIN; X-RAY DIFFRACTION; X-RAY SPECTROSCOPY; ZINC NITRATES; ZINC OXIDES