MICROHARDNESS AND OPTICAL STUDIES ON CDS SINGLE-CRYSTALS GROWN BY SUBLIMATION AND HYDROGEN TRANSPORT TECHNIQUES

Microhardness and optical absorption measurements have been carried ou t for the CdS single crystals grown both by sublimation (in vacuum atm osphere) and hydrogen transport techniques. There is a reduction in ha rdness, fracture toughness and optical absorption of the CdS single cr ystals when hydrogen is used as the transporting agent. The microhardn ess measurement has also been carried out for the sublimation grown Cd Se single crystals which showed higher hardness and fracture toughness values compared to sublimation grown CdS single crystal.