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Author Ouni, B. ♦ Zouini, M. ♦ Lakhdar, M. Haj ♦ Larbi, T. ♦ Dimassi, W. ♦ Amlouk, M.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ ANTIMONY SULFIDES ♦ DEFECTS ♦ ELECTRICAL PROPERTIES ♦ FILMS ♦ GLASS ♦ NANOSTRUCTURES ♦ OPTICAL PROPERTIES ♦ ORTHORHOMBIC LATTICES ♦ PHOTONS ♦ RAMAN SPECTROSCOPY ♦ SCANNING ELECTRON MICROSCOPY ♦ SOLAR ENERGY CONVERSION ♦ SUBSTRATES ♦ X-RAY DIFFRACTION
Abstract Highlights: • A facile route to synthesize large-scale rod-like Sb{sub 2}S{sub 3} micro-wires was presented. • A deep analysis conjoint between band tails, band gap alteration and electrical model. • The band gap is 1.75 eV which may hold for solar energy conversion. - Abstract: Stibnite (Sb{sub 2}S{sub 3}) micro-wires have been grown on glass substrates by sulfuration of Sb thermal evaporated film in a vacuum sealed tube in presence of sulfur powder at 300 °C for 6 h. X-ray diffraction and Raman spectroscopy techniques indicate that the synthesized micro-wires have an orthorhombic structure. SEM micrographs show rod-shaped micro-wires with a typical length of several tens of micrometers and a diameter of the order of 0.5 μm. The absorption coefficient dependence on the photon energy in the UV–visible range revealed the existence of a direct transition with an energy band gap of about 1.7 eV. Moreover, the band tails and localized states which are related to the level of defects in the material will be presented. These parameters were determined from the exponential absorption profile. All these results have been evaluated and discussed in terms of alteration of band gap edge and electrical measurements.
ISSN 00255408
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-07-15
Publisher Place United States
Journal Materials Research Bulletin
Volume Number 67


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