Growth and characterisation of sulphur-rich TlIn(S1−Se )2 single crystals

Electronic and Optical Properties of the TlInS2 Crystal: Theoretical and Experimental Studies

“…We have also conducted experimental measurements of the optical properties of TlInS 2 . In particular, single crystals of TlInS 2 were grown by the Bridgman technique [22]. Spectroscopic ellipsometry measurements were carried out using a variable angle spectroscopic ellipsometer J.A.…”

Temperature Dependence of Raman-Active Modes of TlIn(0.95Se0.05)2 Single Crystals

“…The crystal quality and chemical composition were checked by methods described in Ref. [16]. The results of X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy obtained for the samples under investigation agree well with the data for the 6 2h space group typical of TlInS 2 -type crystals at room temperature and atmospheric pressure [1,2].…”

“…TlIn(S 0.95 Se 0.05 ) 2 single crystals were grown by the Bridgman technique [16]. The crystal quality and chemical composition were checked by methods described in Ref.…”

“…It was concluded that, in the (x, ) phase diagram of TlIn(S 1− Se ) 2 crystals, a Lifshitz type point can exist at = 0.05 [12,13]. Several works were devoted to Raman spectroscopic studies of TlIn(S 1− Se ) 2 solid solutions (0 < < 1), where the compositional transformation of Raman spectra was investigated mostly at room temperature [15][16][17][18][19], as well as at lower temperatures [19]. With regard to the studies of vibrational spectra in a broad temperature range, including the phase transition range, such data were obtained for TlInS 2 crystals by several research teams [20][21][22][23][24][25][26][27][28][29].…”

Composition dependence of lattice parameters and band gap energies of thallium based layered mixed crystals

“…The monoclinic TlGaS 2 and TlGaSe 2 , TlGaS 2 and TlInS 2 form a series of TlGa(S 1-x Se x ) 2 (B) and TlGa 1-x In x S 2 (C) mixed crystals, respectively, with no restrictions on the concentration of the components: 0 B x B 1 [13,14]. The tetragonal TlInSe 2 and monoclinic TlInS 2 compounds form a continuous series of mixed crystals TlIn(Se 1-x S x ) 2 (0 B x B 1) (D) [15,16]. The transformation from the tetragonal to monoclinic structure occurs at x & 0.25.…”