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Dispersive optical constants of Tl2InGaSe4 single crystals
Date
2007-09-01
Author
Qasrawi, A. F.
Hasanlı, Nızamı
Metadata
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The structural and optical properties of Bridgman method grown Tl2InGaSe4 crystals have been investigated by means of room temperature x-ray diffraction, and transmittance and reflectance spectral analysis, respectively. The x-ray diffraction technique has shown that Tl2InGaSe4 is a single phase crystal of a monoclinic unit cell that exhibits the lattice parameters of a = 0.77244 nm, b = 0.64945 nm, c = 0.92205 nm and beta = 95.03 degrees . The optical data have revealed an indirect allowed transition band gap of 1.86 eV. The room temperature refractive index, which was calculated from the reflectance and transmittance data, allowed the identification of the dispersion and oscillator energies, static dielectric constant and static refractive index as 28.51 and 3.45 eV, 9.26 and 3.04, respectively.
Subject Keywords
Mathematical Physics
,
Atomic and Molecular Physics, and Optics
,
Condensed Matter Physics
URI
https://hdl.handle.net/11511/42670
Journal
PHYSICA SCRIPTA
DOI
https://doi.org/10.1088/0031-8949/76/3/007
Collections
Department of Physics, Article
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A. F. Qasrawi and N. Hasanlı, “Dispersive optical constants of Tl2InGaSe4 single crystals,”
PHYSICA SCRIPTA
, pp. 249–252, 2007, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/42670.