High luminescent yield from Mn doped ZnS at yellow–orange region and 367 nm

Abstract

Luminescence properties of hydrothermally and solvo-hydrothermally (water–acetonitrile) grown Mn doped ZnS at a reaction temperature of 200°C is studied. The photoluminescence (PL) emission intensity of solvo-hydrothermally grown Mn doped ZnS shows high luminescence intensity as compared to that of grown by hydrothermal method. ZnS with Mn 3wt% doping, grown by S-H method exhibit high luminescence yield at yellow–orange region and 367nm, is contributed to increase of frozen sulphur vacancy population and specific area of grain boundary. The chromaticity coordinates (CIE) of the observed yellow–orange emission from the samples are calculated, which fall in the yellow–orange region.