Abstract
AbstractEu3+/Tb3+ co‐doped borophosphate glass was synthesized by a melt‐quenching method for the luminescence color‐tunable performance. Under the excitation of 373 nm, the Tb3+‐doped glass exhibited a very strong green emission at 544 nm, corresponding to the electron transition 5D4→7F5 of Tb3+. The emission intensity and lifetime of 5D4 level of Tb3+ dropped with the increase of Eu3+ co‐doping, whereas the emission intensity and lifetime of Eu3+ at 615 nm increased, confirming the existence of energy transfer from Tb3+ to Eu3+. Additionally, the color‐tunable luminescence of the borophosphate glass was also realized from green region to orange‐red region through shifting the Eu3+/Tb3+ ion concentration and the excitation light. There was little difference in emission intensity of Eu3+/Tb3+ co‐doped borophosphate glass under working temperature between 303 and 483 K, manifesting excellent thermal stability. This study indicated that the Eu3+/Tb3+ co‐doped borophosphate glass could become a promising candidate for the applications of anti‐counterfeiting technology.
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