Luminescence Tuning, Thermal Quenching, and Electronic Structure of Narrow-Band Red-Emitting Nitride Phosphors,Inorganic Chemistry

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Luminescence Tuning, Thermal Quenching, and Electronic Structure of Narrow-Band Red-Emitting Nitride Phosphors
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2017-09-21 00:00:00 , DOI: 10.1021/acs.inorgchem.7b01816
Dianpeng Cui ₁ , Zhen Song ₁ , Zhiguo Xia ₁ , Quanlin Liu ₁

Affiliation

Exploring high-performance narrow-band red-emitting phosphor is an important challenge for improving white light LEDs. Here, on the basis of three interesting nitride phosphors with similar vierer rings framework structure, two phosphor series, Eu²⁺-doped Sr(LiAl)_1–xMg_2xAl₂N₄ and Sr(LiAl₃)_1–y(Mg₃Si)_yN₄ (x, y = 0–1), are successfully synthesized by a solid state reaction. They show narrow-band red emission with tunable emission peaks from 614 to 658 nm and 607 to 663 nm. The varying luminescence behaviors with composition and structure are discussed based on centroid shift, crystal field splitting and Stokes shift. On the basis of experimental data, we construct the host referred binding energy (HRBE) and vacuum referred binding energy (VRBE) schemes of divalent/trivalent lanthanide-doped end-member compounds, and further give thermal quenching mechanism of these series phosphors.

中文翻译：

窄带红光氮化物荧光粉的发光调谐，热猝灭和电子结构

探索高性能的窄带发红光磷光体是改善白光LED的重要挑战。在此，基于三种有趣的具有类似维纳环骨架结构的氮化物磷光体，两个磷光体系列，分别掺杂了Eu ^2+的Sr（LiAl）_{1– x} Mg _{2 x} Al ₂ N ₄和Sr（LiAl ₃）_{1 – y}（ Mg ₃ Si）_y N ₄（x，y= 0–1），是通过固态反应成功合成的。它们显示了窄带红色发射，其发射峰的波长范围为614至658 nm，波长为607至663 nm。基于质心位移，晶体场分裂和斯托克斯位移，讨论了随组成和结构变化的发光行为。根据实验数据，我们构建了掺有二价/三价镧系元素的端基化合物的主体参考结合能（HRBE）和真空参考结合能（VRBE）方案，并进一步给出了这些系列荧光粉的热猝灭机理。

更新日期：2017-09-21

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