Abstract
In this work, we have synthesized novel and efficient material Zn0.9655Ba0.0345Al1.9655 O4:Eu0.0345 phosphors by low temperature (500 °C) combustion route, and for better crystallinity, we have annealed with 850–1350 °C in reducing atmosphere of 15% of H2/85% of N2. The crystal structural, element mapping and distribution, morphology, particle homogeneity, and optical properties were measured by various spectroscopic techniques. Photoluminescence (PL) spectra were monitored by excitation and emission (λex. = 492 nm, and λem. = 354 nm) spectra. The PL spectra of phosphors have recorded in order to assess various samples. The PL intensive emission was found at 492 nm due to the Eu (II) ions. The obtained zinc aluminate phosphors have found higher luminescence efficiency due to the high purity and perfect spinel crystallinity of the material. The maximum quantum efficiency was 93.2%, the FWHM was ~64 nm, and the colour purity was 50% have measured for sample S6. With the PL spectrum, we have found good Mechanoluminescence (ML) optical properties of the S6 sample. Therefore, S6 phosphor would be great and useful material for blue pigment, blue LEDs phosphors as well as may be used in various technology in solid-state lighting.
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