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Title: UV light sensing properties of Sm doped vertically aligned ZnO nanorod arrays

Samarium doped ZnO nanorods were grown on silicon substrate by using vapor phase transport method (VPT) with the growth temperature of 950°C. The synthesized nanorods were characterized by XRD, field emission scanning electron microscopy, Raman spectra, and photocurrent measurements. The XRD result revealed that Sm was successfully doped into lattice plane of hexagonal ZnO nanorods. The FESEM result confirms the pure ZnO has nanorod like morphology with an average diameter and length of 130nm and 10µm respectively. The above observation is supported by the Micro-Raman spectroscopy result. The photocurrent in the visible region has been significantly enhanced due to deposition of Sm on the surface of the ZnO nanorods. Sm acts as a visible sensitizer because of its lower band gap compared to ZnO.
Authors:
 [1] ;  [2] ;  [1] ;  [3]
  1. Department of Nanoscience and Technology, Bharathiar University, Coimbatore 46 (India)
  2. Advanced Materials and Devices Laboratory, Department of Physics, Bharathiar University, Coimbatore 46 (India)
  3. (India)
Publication Date:
OSTI Identifier:
22490276
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COMPARATIVE EVALUATIONS; DEPOSITION; DOPED MATERIALS; FIELD EMISSION; MORPHOLOGY; NANOSTRUCTURES; RAMAN SPECTRA; RAMAN SPECTROSCOPY; SAMARIUM; SCANNING ELECTRON MICROSCOPY; SENSITIZERS; SILICON; SUBSTRATES; ULTRAVIOLET RADIATION; X-RAY DIFFRACTION; ZINC OXIDES