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Comparative Evaluation of Dual Emission Mode for Yellowish-Green Borophosphate-Based Solid Solution La 7O 6(BO 3)(PO 4) 2:Er

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Document pages: 19 pages

Abstract: To acquire visible emissions using near-ultraviolet (NUV) and near-infrared (NIR) irradiations for multiple solid state lighting and display applications, exploring efficient upconversion (UC) downconversion (DC) mode of erbium ion in different matrixes is of great importance. Here, we aimed to originally study the dual emission mode of borophosphate La7O6(BO3)(PO4)2 (LBP)-based solid solution doped with erbium ion. Er3+ occupies the lattice site of La3+ . A yellowish-green light is acquired by both DC and UC. It is identified that the UC photoluminescence has lower correlated color temperature (5694 K), higher color purity (87 ), and longer lifetime (0.338 ms) than the DC. The present research can provide a new insight into the design and UC DC photoluminescence of borophosphate-based solid solution fabricated by erbium for expanding solid state lighting applications.

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