Growth of SnSe single crystal via vertical vapor deposition method and characterization of its thermoelectric performance

In this work, a vertical vapor deposition method was developed to grow SnSe single crystals. More than thirty single crystal particles were simultaneously obtained and the largest size could up to 15 × 15 × 10 mm3. The as-grown crystal is tested has nearly Sn: Se = 1: 1 stoichiometric ratio and demonstrates standard orthorhombic Pnma space group at room temperature. Electrical transport measurement shows the present SnSe single crystal has a...