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Crystal data and some physical properties of Tl 2 InGaTe 4 crystals
Author(s) -
Qasrawi A. F.,
Gasanly N. M.
Publication year - 2007
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200710909
Subject(s) - photocurrent , electrical resistivity and conductivity , tetragonal crystal system , crystal (programming language) , materials science , debye model , hall effect , photoconductivity , condensed matter physics , band gap , single crystal , analytical chemistry (journal) , crystal structure , crystallography , chemistry , physics , optoelectronics , quantum mechanics , computer science , programming language , chromatography
The room temperature crystal data, Debye temperature, dark and photoelectrical properties of the Bridgman method grown Tl 2 InGaTe 4 crystals are reported for the first time. The X‐ray diffraction technique has revealed that Tl 2 InGaTe 4 is a single phase crystal of tetragonal body‐centered structure belonging to the space group. A Debye temperature of 124 K is calculated from the results of the X‐ray data. The current‐voltage measurements have shown the existence of the switching property of the crystals at a critical voltage of 80 V. The dark electrical resistivity and Hall effect measurements indicated the n ‐type conduction with an electrical resistivity, electron density and Hall mobility of 2.49×10 3 Ω cm, 4.76×10 12 cm –3 and 527 cm 2 V –1 s –1 , respectively. The photosensitivity measurements on the crystal revealed that, the variation of photocurrent with illumination intensity is linear, indicating the domination of monomolecular recombination at room temperature. Moreover, the spectral distribution of the photocurrent allowed the determination of the energy band gap of the crystal studied as 0.88 eV. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)