Brief Review on Photoluminescence and Persistent Luminescence of Rare Earth Activated 〖Sr〗_4 〖Al〗_14 O_25 Phospho

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Nidhish Chaubey, Bhagwat Kaushik, Anjali Vaishnaw

Abstract

A Systematic scientific study of the subject of luminescence is of recent origin, from the middle of 19th century. Due to excellent photo-resistance and chemical stability, great brightness, long-lasting time, no radiation and environmental capability, which resulted in their wide applications in many fields, are more appropriately focused by scientists and engineers. From this literature review we got to know that the tetra strontium aluminate phosphors could be synthesized by solid state reaction method and combustion method.  By doping different rare earth in a host matrix the emission color could be changed. 

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