Abstract
A facile strategy based on the reaction of urea, boric acid and polyethylene glycol is used for the synthesis of toxicity-free BCNO phosphor. The structure and luminescent properties of samples annealed under various ambient atmospheres and different annealing temperatures are investigated in detail. The annealed BCNO phosphors have a t-BN crystalline structure mixing mainly with cubic B2O3. The crystallinity quality of BCNO phosphors is improved as the annealing temperature increases. The photoluminescent intensity is related to the crystallinity and the main emission peak shifts from 530nm to the two bands of 325–350nm and 400–450nm, respectively. In addition, vibration modes vary with annealing temperatures and ambiences.
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