Optimization of the Pechini-derived synthesis of rare-earth free aluminum borate phosphors presenting tunable white emission

The present study is dedicated to the development of aluminum borate luminescent powders which appear as promising and more environmental-friendly than conventional phosphors. different steps powder synthesis, in particular precursors (inorganic organic) ratios calcination conditions, are adjusted by studying resulting optical features get a broader warmer white emission. As shown previous works, photoluminescence emission originates from polycyclic aromatic hydrocarbons (PAH) trapped inorganic matrix. Morphological structural properties particles remain otherwise identical for every optimized parameter. synthesized these conditions exhibits wide intense band under near-UV excitation. These combined with time-resolved measurements demonstrate that adjustments synthetic process allow formation trapping emitting centers. modulation excitation wavelength (from 305 405 nm) leads tunable characterized large lying between 400 700 nm. This feature, associated use secure abundant makes very interesting phosphors applications.