Abstract
Among several methods to obtain white light in light emitting diodes (LEDs), mixing blue light with yellow light excited by blue light is the most effective and economical method. However, the quality of white light achieved by this method is poor, making it essential to develop high-quality yellow phosphors. In this study, we synthesized yellow phosphors with broad spectral width by the sol-gel method and studied the effect of various synthetic conditions on their photoluminescence spectra. Consequently, we optimized synthesis conditions for a series of yellow phosphors and found that excess europium doping caused quenching and reduced the quantum yield.
Highlights
Light emitting diodes (LEDs) have attracted a lot of attention in recent times as a potential candidate for new generation illumination
White LED light is achieved by mixing near-ultra-violet (NUV) or blue LED light with light from phosphors derived from their complementary colors, excited by themselves.[1]
LED light using blue LED light converted by the yellow phosphor YAG: Ce is the most popular combination to obtain white light
Summary
Light emitting diodes (LEDs) have attracted a lot of attention in recent times as a potential candidate for new generation illumination. Effect of preparation conditions in sol-gel method on yellow phosphor with wide spectrum Li2SrSiO4 is an ideal host for photoluminescence materials due to its low synthesis temperature and high thermal and chemical stability.
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