Growth and Characterization Of Tantulam Selenide

Abstract

Layered structure (lamellar) solids of transition metal dichalcogenides MX2 (M=Mo,W,Nb,Ta, X=S,Se,Te) have been extensively studied partly because of their excellent lubricating properties and partly due to their photovoltaic properties. Undo extreme pressures fluid lubricants squeeze out from between metting surfaces, causing high friction and wear. With lamellar solids such as TMDCs, shearing takes place more easily when loads are high. So, lamellar solids are well suited to extreme pressure lubrication. As a part of programme of growing than single crystals, this paper presents the growth of TaSe2. The vapour transport technique using iodine as a transporting agent and EDAX and XRD studies gives confirmation also stoichiomatric and structural properties. The type, concentration of charge carriers and also the carrier mobility has been obtained by the Hall effect measurement at room temperature.