Rare-earth (RE) doped phosphors have attracted significant interest in the development of white light-emitting diodes (WLEDs) due to their exceptional luminescent properties. In material chemistry, the synthesis of complex inorganic structures with specific dimensions and morphologies is critical to their performance. Among these, RE- and transition-metal-doped aluminates represent a vital class of luminescent materials with applications ranging from catalysis and optical coatings to display devices and sensors.Zinc aluminate is a prominent wide-bandgap semiconductor (3.50 - 3.90 eV) within the spinel family. Beyond traditional lighting, optimized ZnAl2O4 phosphors are increasingly utilized in forensic science for fingerprint or trace detection due to their high selectivity, contrast, and sensitivity.
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