The hydrogen coactivated ZnS phosphors with constant copper concentration and varying manganese concentrations show photoluminescence with colour varying from blue-green to yellow orange range under excitation by 3650 AW-radiation. The yellow band associated with Mn-transitions dominates at higher Mn- concentrations while green emission due to copper almost disappears for higher Mn-concentration.The photoluminescent output is studied as a function of temperature. The samples were also found to exhibit photoconductivity. The presence of coactivators like chlorine and hydrogen has been observed as pre-requisites for photoconductive and photoiuminesence.
References not available.
Cite this article:
Shukla, Singh and Singh (1992). Photoluminascence Of Doubly Activated ZnS Phosphors. Journal of Ravishankar University (Part-B: Science), 5(1), pp.177-184.