Abstract
Eu3+-activated AlN phosphors with hexagonal wurtzite structures were successfully prepared by a low-cost, nontoxic and simple solid-state route at 880 °C which is lower than many other synthesis temperatures. The structure and phase formation, morphology, elements analysis, photoluminescence and photocatalysis properties are investigated in detail. All the phosphors present red emission due to 5D0→7F2 transition of Eu3+. The optimal doping concentration of Eu3+ in AlN matrix is 0.8% mole fraction, and the phosphors exhibit high color purity and high brightness. Meanwhile, AlN:xEu3+ phosphors exhibit excellent photocatalytic hydrogen evolution activity, and the maximum rate of H2 evolution from water splitting is 77 μmol h−1 g−1. These findings signify that bifunctional AlN:Eu3+ with photoluminescence and photocatalytic properties may be anticipated to apply in both white light-emitting diodes (WLEDs) and photocatalytic water reduction.
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