Title of article :
Synthesis of CuInS2 by chemical route: optical characterization
Author/Authors :
Guha، نويسنده , , P and Das، نويسنده , , D and Maity، نويسنده , , A.B and Ganguli، نويسنده , , D and Chaudhuri، نويسنده , , S، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2003
Pages :
16
From page :
115
To page :
130
Abstract :
CuInS2 powder was prepared by wet chemical route. The chalcopyrite structure of the powder was revealed by XRD studies. Raman measurements of the powder sample indicated four prominent peaks at 292, 305, 340 and 472 cm−1. The possible origin of the 305 cm−1 peak was investigated and was found to be some local vibration in the structure. The peaks at 292 and 340 cm−1 were ascribed to A1 and B2 modes, respectively. The peak at 472 cm−1 which was due to the formation of SO4−2 ion at lower pH value of the precursor solution could be eliminated by using pH>11.0. Photoluminescence (PL) studies of the CuInS2 powder indicated two distinct peaks at 1.49 and 1.42 eV. Post deposition annealing treatment in H2 atmosphere revealed the formation of excess sulphur vacancy leading to the peak at 1.42 eV in the PL spectra while O2 annealing of the powder created a deep defect level at 1.10 eV. Thick CuInS2 films were prepared by Doctorʹs blade technique. Optical transmittance studies of these films indicated direct allowed transition at ∼1.5 eV.
Keywords :
Raman study , CuInS2 , Thin film , Chemical route , Doctorיs blade
Journal title :
Solar Energy Materials and Solar Cells
Serial Year :
2003
Journal title :
Solar Energy Materials and Solar Cells
Record number :
1478948
Link To Document :
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