Manipulating energy transfer to achieve zero-thermal quenching luminescence in a white-emitting borotellurate phosphor
Source abstract
Abstract
Energy transfer-induced white-emitting phosphor materials acquired much attention in white light-emitting diode (w-LED) domain. Nevertheless, how to obtain extremely high thermostable luminescence is one of the troubles, which is urgently solved. Diverse strategies were proposed to improve thermal quenching resistance of w-LED phosphors. Herein, a Tm 3+−Dy 3+ energy transfer (ET) method is manipulated to simultaneously achieve white-emitting and zero-thermal quenching luminescence in Na 2Y 2TeB 2O 10 (NYTB), which is constructed via the co-substitution of Tm 3+/Dy 3+ for Y 3+. The ET mechanism and efficiency are determined. The color coordinates (0.3545, 0.3334) of the representative NYTB:0.07Tm 3+,0.05Dy 3+ phosphor closely resemble (0.33, 0.33) for the standard white light. It is employed to fabricate a w-LED device with low CCT. This work offers an in-depth insight of ET strategy for both obtaining white-emitting and developing extremely high thermostable luminescence.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Glass properties and applications · Inorganic Chemistry and Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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