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Author Patel, Mitesh H. ♦ Chaudhuri, Tapas K. ♦ Patel, Vaibhav K. ♦ Shripathi, T. ♦ Deshpande, U.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ NANOSCIENCE AND NANOTECHNOLOGY ♦ ABSORPTION ♦ ABSORPTION SPECTRA ♦ ENERGY GAP ♦ LEAD SULFIDES ♦ MATRIX MATERIALS ♦ NANOCOMPOSITES ♦ NANOPARTICLES ♦ NANOSTRUCTURES ♦ PRECURSOR ♦ PVP ♦ REFRACTIVE INDEX ♦ THIN FILMS ♦ X-RAY DIFFRACTION
Abstract PbS/Polyvinylpyrrolidone (PVP) nanocomposites films with different volume fraction of PbS have been deposited from single molecular precursors. X-ray diffraction patterns conforms the formation of PbS nanocrystals in PVP matrix. The transmission spectra of the films in the wavelength range of 300 to 2400 nm show the absorption edges are blue shifted due to formation of PbS Nanoparticles. The band gap determined are 2.4, 1.5 and 1.25 eV for PbS volume fraction of 8.5, 16, 27%, respectively. The corresponding refractive indices, n determined from Fresnel relation are 1.8, 2, and 2.35 which are in between that of PbS (4.2) and PVP (1.48).
ISSN 0094243X
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-05-06
Publisher Place United States
Volume Number 1728
Issue Number 1


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