This report describes synthesis of binary Bi 2Te 3 and ternary Bi 0.5Sb 1.5Te 3 single crystals using the halide chemical vapor transport technique. For synthesis of ternary Bi 0.5Sb 1.5Te 3, BiBr 3 is a more effective transport agent compared with iodine I 2. The single crystal includes a few atomic percent of Br. The Bi 0.5Sb 1.5Te 3 crystal shows p-type conduction and has a comparatively large residual resistivity ratio. The crystal exhibits relatively high electrical resistivity and high Seebeck coefficient. These high values are attributed to decrease of the hole concentration p due to doping of the transport agent Br.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
- Materials Chemistry