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首页> 外文期刊>Physica, B. Condensed Matter >Synthesis and crystal structures and luminescent properties of divalent europium-doped Ba_2ZnSi_2O_7 and BaZn _2Si_2O_7
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Synthesis and crystal structures and luminescent properties of divalent europium-doped Ba_2ZnSi_2O_7 and BaZn _2Si_2O_7

机译：二价euro掺杂Ba_2ZnSi_2O_7和BaZn_2Si_2O_7的合成，晶体结构和发光性能

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摘要

The monoclinic Ba_2ZnSi_2O_7:Eu~2 blue-green-emitting phosphor and the orthorhombic BaZn_2Si _2O_7:Eu~2 green-emitting phosphor were prepared by combustion-assisted synthesis method as the fluorescent materials for ultraviolet-light-emitting diodes (UV-LEDs) performed as a light source. The crystallinity and luminescence were investigated using X-ray diffraction (XRD) and photoluminescence (PL) spectroscopy. Pure monoclinic Ba_2ZnSi _2O_7 and orthorhombic BaZn_2Si_2O _7 crystallize completely at 1100 °C. The doped Eu~2 ions did not cause any significant change in the host structure. The emission spectra presented an emission position red shift of up to 16 nm from Ba _2ZnSi_2O_7:Eu~2 to BaZn _2Si_2O_7:Eu~2. The excitation spectra of Ba_2ZnSi_2O_7:Eu~2 and BaZn _2Si_2O_7:Eu~2 were broad-banding, extending from 260 to 465 nm, which match the emission of UV-LEDs.
机译：通过燃烧辅助合成法制备了单斜晶Ba_2ZnSi_2O_7：Eu〜2蓝绿色荧光粉和正交晶BaZn_2Si_2O_7：Eu〜2绿色荧光粉作为紫外发光二极管（UV-LED）的荧光材料。作为光源执行。使用X射线衍射（XRD）和光致发光（PL）光谱研究了结晶度和发光度。纯单斜晶Ba_2ZnSi_2O_7和正交晶BaZn_2Si_2O_7在1100°C时完全结晶。掺杂的Eu〜2离子不会引起主体结构的任何重大变化。发射光谱显示从Ba _2ZnSi_2O_7：Eu〜2到BaZn _2Si_2O_7：Eu〜2的发射位置红移高达16 nm。 Ba_2ZnSi_2O_7：Eu〜2和BaZn_2Si_2O_7：Eu〜2的激发光谱是宽谱带，从260nm到465nm，与紫外LED的发射相匹配。

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