M. Ozer et al., LARGE SINGLE-CRYSTAL GROWTH AND CHARACTERIZATION OF THE NARROW-GAP SEMICONDUCTOR TLBIS2, Semiconductor science and technology, 11(10), 1996, pp. 1405-1410
TlBiS2 is a narrow-gap semiconductor with a layered structure, isoelec
tronically analogous to PbS. Large single crystals were grown by the B
ridgman-Stockbarger method from the melt and characterized by x-ray di
ffraction. The lattice parameters were determined and the discrepancy
between those already reported was removed. From IR reflectivity measu
rements in the plasma region, the number of carriers was calculated. A
lso a strong anisotropy of the electrical conductivity was detected an
d the narrow-gap character of the material was supported by electrical
measurements in the range of 10-300 K.