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- W2023442928 abstract "Abstract Detailed studies on thickness dependence, 100–400 nm, of the optical, electrical, and structural properties have been carried out on AsSeGe thin film samples prepared by thermal evaporation technique. The optical transmission and reflection spectra of these films were measured in the range of 200–1100 nm. The mechanism of the optical absorption follows the rule of forbidden non-direct transition. The band gap E g , determined from plots of both ( αhν ) 1/3 and ( e ″) 1/3 versus hν , was found to increase with film thickness. Real and imaginary parts of the dielectric constant are determined and it showed apparently little change with film thickness. Activated electrical conduction and some of the Mott parameters also showed a decrease in the density of localized states around the Fermi level with an increase in thickness. The results are discussed in terms of the structure of As 30 Se 60 Ge 10 films by extended X-ray diffraction and in terms of structure factor F ( q ) and radial distribution function J ( r ). The J ( r ) function predicts the average coordination numbers for three different atoms. Their distances to the first coordination sphere have been determined in As 30 Se 60 Ge 10 ." @default.
- W2023442928 created "2016-06-24" @default.
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- W2023442928 date "2001-06-01" @default.
- W2023442928 modified "2023-09-23" @default.
- W2023442928 title "Structure, optical absorption and electrical conductivity of amorphous AsSeGe thin films" @default.
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- W2023442928 doi "https://doi.org/10.1016/s0042-207x(01)00352-9" @default.
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