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Title: Synthesis of single phase chalcopyrite CuIn{sub 1−x}Ga{sub x}Se{sub 2} (0 ≤ x ≤ 1) nanoparticles by one-pot method

Graphical abstract: - Highlights: • A facile and rapid one-pot synthesis method is presented. • The effects of various Ga contents are investigated. • Single phase chalcopyrite CuIn{sub 1−x}Ga{sub x}Se{sub 2} nanoparticles can be easily synthesized. • The phase formation sequence is from CuSe to CuGaSe{sub 2}, then to CuIn{sub 1−x}Ga{sub x}Se{sub 2}. • The possible reaction mechanism of CuIn{sub 1−x}Ga{sub x}Se{sub 2} nanoparticles is proposed. - Abstract: Single phase chalcopyrite and near stoichiometric CuIn{sub 1−x}Ga{sub x}Se{sub 2} (0 ≤ x ≤ 1) nanoparticles were successfully synthesized by using a facile and rapid one-pot method. The effects of various Ga contents on crystal phase, morphology, element composition and absorption spectrum of the as-synthesized CuIn{sub 1−x}Ga{sub x}Se{sub 2} nanoparticles were investigated in detail. The XRD and Raman patterns indicated that the as-synthesized nanoparticles had a single phase chalcopyrite structure, and the diffraction peaks shifted toward larger diffraction angles or higher frequencies with increasing Ga content. The FE-SEM images showed that the as-synthesized nanoparticles were polydispersed in both size and shape, and the nanoparticles with higher Ga content were more prone to aggregate. The Vis–IR absorption spectra showed strong absorption in the entire visible light region. The estimated band gap increased frommore » 1.00 eV to 1.68 eV as Ga content increasing.« less
Authors:
 [1] ;  [2] ;  [1] ; ; ; ; ; ;  [1]
  1. Engineering Research Center of Optical Instrument and System, Ministry of Education and Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, No. 516 JunGong Road, Shanghai 200093 (China)
  2. (China)
Publication Date:
OSTI Identifier:
22348606
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 51; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 77 NANOSCIENCE AND NANOTECHNOLOGY; ABSORPTION; ABSORPTION SPECTRA; CHALCOPYRITE; COPPER SELENIDES; CRYSTALS; EV RANGE; NANOPARTICLES; NANOSTRUCTURES; OPTICAL PROPERTIES; PEAKS; REACTION KINETICS; SCANNING ELECTRON MICROSCOPY; SYNTHESIS; X-RAY DIFFRACTION