Structure and multicolor tunable luminescence based on Tb3+/Eu3+ doped La2W3O12 phosphors for white LEDs
Structure and multicolor tunable luminescence based on Tb3+/Eu3+ doped La2W3O12 phosphors for white LEDs
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基于 Tb3 /Eu3 掺杂 La2W3O12 荧光粉的白光 LED 的结构和多色可调发光
DOI：
10.1016/j.jlumin.2021.118184
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发表时间：
2021-09
影响因子：
3.6
通讯作者：
Zhipeng Ci
中科院分区：
文献类型：
--
作者：
Lili Han;Chao Guo;Yayun Ning;Lei Zhao;Zhipeng Ci
在900℃下，通过固相反应合成了Tb3+或Eu3+单掺杂和共掺杂的la2w3o12。系统地研究了该材料的晶体结构和光致发光性能。结果表明，基于wo4基团优势的la2w3o12在紫外区具有较宽的吸收截面，可以有效增强Tb3+和Eu3+的发射强度。Tb3+向Eu3+的能量传递是由偶极-偶极机制决定的，Tb3+向Eu3+的能量传递效率高达36%。基于有效的能量传递效应，实现了从绿色到黄色最终向红色的多色可调发射。此外，对La2W3O12: Tb3+， Eu3+的温度依赖性发光进行了仔细的研究，表明制备的La2W3O12: Tb3+， Eu3+荧光粉是固体激光器，面板显示，wled和LED植物灯的优秀候选材料。
In this work, Tb3+or Eu3+single doped and co-doped La2W3O12were synthesized via a solid-state reaction at 900 °C. The crystal structure and photoluminescence properties were systematically investigated in detail. It was found that the La2W3O12based on the advantages of WO4groups exhibits a broad absorption cross-section in the ultraviolet area, which can effectively enhance the emission intensity of Tb3+and Eu3+. The energy transfer from Tb3+to Eu3+is determined by the dipole-dipole mechanism, and the energy transfer efficiency from Tb3+to Eu3+is as high as 36%. Based on efficient energy transfer effect, multicolor tunable emission from green to yellow and eventually toward red is realized. In addition, the temperature-dependent luminescence of La2W3O12: Tb3+, Eu3+are carefully investigated, which suggested that as-prepared La2W3O12: Tb3+, Eu3+phosphors are excellent candidates for solid-state laser, panel display, WLEDs and LED plant lights.
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影响因子：
3.1
作者：
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影响因子：
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作者：
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