Synthesis, Luminescent Properties and White LED Fabrication of Sm3+ Doped Lu2WMoO9

Coatings

Yuechan Li¹  Huiyi Xu¹  Min Zhang¹  Chunyan Cao¹  Zijun Chen¹  Xiaoting Chen¹  An Xie¹  Minkun Jian¹ 

[1] Fujian Key Laboratory of Functional Materials and Applications, School of Materials Science and Engineering, Xiamen University of Technology, Ligong Road 600, Jimei, Xiamen 361024, China;

关键词: luminescent materials;    photoluminescence;    ultraviolet (UV);    white lighting emitting diode (W-LED);   

DOI  :  10.3390/coatings11040403

来源: DOAJ

【 摘 要 】

In this paper, Sm³⁺ doped Lu₂W_0.5Mo_0.5O₆, Lu₂WMoO₉, and Lu₂(W_0.5Mo_0.5O₄)₃ materials were synthesized by using a two-step solid-state reaction method. The synthesized materials were characterized by X-ray diffraction (XRD) patterns, field emission scanning electronic micrograph (FE-SEM) pictures, photoluminescence (PL) excitation and emission spectra, and temperature-dependent emission intensities. Orange-reddish light could be observed from the phosphors under ultraviolet (UV) 365 nm light. The Sm³⁺ doped Lu₂WMoO₉ had enhanced PL intensities compared to the other two materials. The excitation, the energy transfer, the nonradiative relaxation, and the emission processes were illustrated by using schematic diagrams of Sm³⁺ in Lu₂MoWO₉. The optimal Sm³⁺ doping concentration was explored in the enhancing luminescence of Lu₂WMoO₉. By combing the Sm³⁺ doped Lu₂WMoO₉ to UV 365 nm chips, near white lighting emitting diode (W-LED) were obtained. The phosphor can be used in single phosphor-based UV W-LEDs.

【 授权许可】

Unknown