Abstract
Red light emitting Sr0.91Mg2Al5.82Si9.18O30:Eu3+ (SMAS: Eu3+) nanophosphors were synthesized by a facile solution-combustion method. The optimal firing temperature and time for obtaining a pure phase of the SMAS host lattice was found to be 1000 °C for 3 h. The structural, morphological, thermal stability and luminescent properties of the nanophosphors were investigated as a function of calcining temperature and by varying the Eu3+ ion concentration. Powder XRD patterns confirmed the hexagonal crystal system. The photoluminescence (PL) of the 0.5 mol% Eu3+ doped SMAS exhibited strong and intense red emission (612 nm) corresponding to the 5D0 → 7FJ transition which resulted from the occupation of Eu3+ ions in the SMAS host lattice sites. Based on the dominant red (5D0 → 7F2) emission intensity under 394 nm ultra-violet excitation, these nano-luminescent powders are expected to find potential applications in the production of red light for phosphor converted white light emitting diodes and optical display systems.
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