Crystal data, electrical resistivity and mobility in Cu3In5Se9 and Cu3In5Te9 single crystals

X-ray powder diffraction data were obtained for Cu3In5Se9 and Cu3In5Te9 which were found to crystallize in orthorhombic and tetragonal systems, respectively. The electrical resistivities and Hall mobilities of these compounds were investigated in the temperature range 35-475 K. Cu3In5Se9 was identified to be n-type with a room temperature resistivity of 3 x 10(3) which decreases with increasing temperature. For T < 65 K impurity activation energy of 0.03 eV and for T > 350 K onset of intrinsic conduction yielding a band gap energy of 0.99 eV were detected. The neutral impurity scattering was found to dominate at low temperatures, while in the high temperature region thermally activated mobility was observed. Cu3In5Te9 exhibits p-type conduction with a room temperature resistivity of 8.5 x 10(-3) decreasing sharply above 400 K and yielding an impurity ionization energy of 0.13 eV. The temperature dependence of mobility indicates the presence of lattice and ionized impurity scattering mechanisms above and below 160 K, respectively.


Crystal Data for A3B5C9-Type Ternary Compounds
Özkan, Hüsnü; Hasanlı, Nızamı; Yilmaz, Ibrahim; Çulfaz, Ali; Nagiev, Vyaçeslav (1998-12-01)
X-ray powder diffraction data were obtained for Cu3Ga5Se9, Cu3In5Se9, Cu3In5Te9, Ag3In5S9, Ag3Ga5S9, Ag3In5Se9, and Ag3Ga5Te9 ternary compounds. The data indicate that these compounds crystallize in orthorhombic, monoclinic, orthorhombic, monoclinic, tetragonal, tetragonal, and orthorhombic systems, respectively.
Temperature-tuned band gap energy and oscillator parameters of TlInSeS layered single crystals
Hasanlı, Nızamı; Güler, Işıkhan (2008-09-10)
The parameters of monoclinic unit cell of TlInSeS layered crystals were determined from X-ray powder diffraction study. The optical properties of TlInSeS have been investigated by means of transmission and reflection measurements in the wavelength range of 500-1100 nm. The optical indirect transitions with band gap energy of 2.05 eV and direct transitions with band gap energy of 2.21 eV were found by means of the analysis of the absorption data at room temperature. Transmission measurements carried out in t...
Optical properties of Cu3In5S9 single crystals by spectroscopic ellipsometry
Işık, Mehmet; Nasser, H.; Ahmedova, F.; Guseinov, A.; Hasanlı, Nızamı (2018-01-01)
Cu3In5S9 single crystals were investigated by structural methods of x-ray diffraction and energy dispersive spectroscopy and optical techniques of ellipsometry and reflection carried out at room temperature. The spectral dependencies of optical constants; dielectric function, refractive index and extinction coefficient, were plotted in the range of 1.2-6.2 eV from ellipsometric data. The spectra of optical constants obtained from ellipsometry analyses and reflectance spectra presented a sharp change around ...
Optical characteristics of Bi12SiO20 single crystals by spectroscopic ellipsometry
Isik, M.; Delice, S.; Nasser, H.; Hasanlı, Nızamı; Darvishov, N. H.; Bagiev, V. E. (Elsevier BV, 2020-12-01)
Structural and optical characteristics of Bi12SiO20 single crystal grown by the Czochralski method were investigated by virtue of X-ray diffraction (XRD) and spectroscopic ellipsometry measurements. XRD analysis indicated that the studied crystal possesses cubic structure with lattice parameters of a = 1.0107 nm. Spectral dependencies of several optical parameters like complex dielectric constant, refractive index, extinction and absorption coefficients were determined using ellipsometry experiments perform...
Synthesis, crystal structure, spectroscopic investigations, thermal behavior and DFT calculations of pentacarbonyl(2-methylpyrazine)chromium(0)
MORKAN, İzzet; Celik, Derya; Morkan, Ayse Uztetik; GÜVEN, KUTALMIŞ (2012-07-01)
Pentacarbonyl(2-methylpyrazine)chromium(0) [Cr(CO)(5)(2mpyz)], complex was isolated from its n-hexane solution as orange plate-like crystals which were characterized by IR, NMR spectroscopies and X-ray crystallography. The crystallographic results show that the complex was crystallized in the monoclinic system with the unit cell parameters of a = 7.176 (5), b = 12.045 (3), c = 14.461 (3)angstrom, beta=90.44 (3)degrees and space group 2/M. The single crystal structure of the complex shows the bonding of chro...
Citation Formats
M. Parlak, İ. Günal, and N. Hasanlı, “Crystal data, electrical resistivity and mobility in Cu3In5Se9 and Cu3In5Te9 single crystals,” CRYSTAL RESEARCH AND TECHNOLOGY, pp. 395–400, 1997, Accessed: 00, 2020. [Online]. Available: