Study of photoluminescence properties of Trivalent metal ion (Al3+) Coumarinolates doped with Quinoline for PCLED application.

Several Aluminium coumarinolates doped with various amounts of quinoline were studied. Normally pure coumarin along with the chelates show weak luminescence and the emission is observed around 450 nm along with emission around 350nm. Therefore such chelates don’t find any practical applications. Adding quinoline in small amount affects the emission and excitation of Al-Coumarin significantly. In most of these coumarinolates the emission is observed in blue green region with the excitation shifted in blue region. Of the several samples, sample doped with 40% quinoline shows the most intense emission. Thus this phosphor having intense emission along with good overlap of excitation with the near UV to blue emission of GaN based LED will find application as white phosphor in PCLED applications. The results are discussed in this paper. [ABSTRACT FROM AUTHOR]