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Structural and optical study of Ga3+ substitution in CuInS2 nanoparticles synthesized by a one-pot facile method
, Article Journal of Physical Chemistry C ; Volume 118, Issue 42, 23 2014 , October , 2014 , Pages 24670-24679 ; ISSN: 19327447 ; Nawaz Tahir, M ; Iraji Zad, A ; Mirkazemi, S. M ; Ghasemzadeh, R ; Huesmann, H ; Tremel, W ; Sharif University of Technology
Abstract
A one-pot method was used to synthesize CuInxGa1-xS2 nanoparticles by substituting In3+ with Ga3+. The samples with composition of gallium ranging from 0% to 100% were synthesized by solving copper chloride, indium trichloride, gallium acetylacetonate, and thiourea as precursors in 1-octadecene, oleylamine, and oleic acid as noncoordinating, coordinating, and capping agent solvents, respectively. Depending on the chemical composition and synthesis conditions, the morphology of the as-synthesized nanoparticles obtained was trigonal, semitrigonal, hexagonal, and quasi-spherical. X-ray photoelectron spectroscopy and X-ray diffraction confirmed that Ga3+ substituted In3+ without any segregation...
Nanocrystalline copper doped zinc oxide produced from copper doped zinc hydroxide nitrate as a layered precursor
, Article Advanced Powder Technology ; Volume 23, Issue 3 , 2012 , Pages 279-283 ; 09218831 (ISSN) ; Bagheri, N ; Sadrnezhaad, S. K ; Sharif University of Technology
Abstract
Undoped and copper doped nanostructured zinc oxides were synthesized by using a series of synthetic layered material, undoped and copper doped zinc hydroxide nitrates at various molar percentages of copper (2-10) within the layers as precursors. The layered materials were heat-treated at 500 °C to produce zinc oxide nanostructures with crystallite sizes in the range of 23-35 nm. Optical studies of the nanostructured copper doped zinc oxides showed the decrease in band gap with increasing content of the doping agent, copper