Abstract
The blue-emitting phosphor SrAl2B2O7:Eu2+ has the potential to be used in full-spectrum LED devices. However, the reducing atmosphere is extremely demanding in the complex preparation process of SrAl2B2O7:Eu2+. Thereby, the synthesis of SrAl2B2O7:Eu2+ with an economic approach is important. In this work, a new synthesis route was realized; SrAl2O4:Eu2+ and H3BO3 were used as solid precursors to synthesize SrAl2B2O7:Eu2+ by solid-state reaction method, and only carbon powder is needed as a source of reducing atmosphere. The effects of different synthesis routes on the crystal structure, morphology, and luminescence properties of SrAl2O4:Eu2+ were studied, as well as the effects of Li+ doping on luminescence properties were investigated. The results show that under the new synthesis route, SrAl2B2O7:Eu2+ has good luminescence properties, and doping Li+ will improve the luminescence intensity.
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