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- W2059547186 abstract "Thin polycrystalline films of the ordered defect compound CuIn5Se8 and CuInSe2 are prepared on soda lime glass substrates at temperature 623 K by coevaporation of the constituent elements. X-ray diffraction, scanning electron microscopy and energy dispersive analysis of x-rays are done on the films for structural, morphological and composition determination. The lattice constants and the anion displacements for the compounds are calculated. The deformation parameter values show that the compounds have slightly distorted tetragonal unit cells. Assuming the atomic positions, the x-ray structure factor calculations have been made and the emergence of (110) reflection in the x-ray diffraction pattern of the ordered defect compound CuIn5Se8 is explained. High resistivity measured for the compound film is attributed to the compensated defect levels in it. Hot probe measurements show the conductivity of the films to be n-type. A band gap Eg = 1.32 eV is observed for the compound and the increase in band gap compared to Eg = 0.98 eV for CuInSe2 is explained as a consequence of the lowering of the valence band due to weaker SeΓ15(p)–CuΓ15(d) repulsion in the defect compound and electronic passivation due to 2VCu–InCu pairing." @default.
- W2059547186 created "2016-06-24" @default.
- W2059547186 creator A5030127594 @default.
- W2059547186 creator A5045255814 @default.
- W2059547186 date "2003-07-02" @default.
- W2059547186 modified "2023-10-09" @default.
- W2059547186 title "Structural analysis and optical and electrical characterization of the ordered defect compound CuIn<sub>5</sub>Se<sub>8</sub>" @default.
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- W2059547186 doi "https://doi.org/10.1088/0268-1242/18/8/309" @default.
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