Pr 3+ ion-doped YinGe 2 O 7 phosphors are synthesized by a vibrating milled solid state reaction. There is a red shift for the excitation peak for the charge transfer transition between In 3+ and O 2- ion because the numbers of oxygen vacancies change the structure, which leads to a change in the crystal field. The results indicate that the emission spectra for the YinGe 2 O 7 :Pr samples under an excitation of 263 nm exhibit two dominant peaks at 486 and 604 nm, which are respectively assigned to the 3 P 0 → 3 H 4 and 1 D 2 → 3 H 4 transitions. The chromaticity coordinate for (Y 1-x Pr x )InGe 2 O 7 phosphors varies with the Pr 3+ doping concentration, from white, to greenish, to blueish. This has a potential application as a white light emitting phosphor for ultraviolet light-emitting diodes.

中文翻译：

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Pr 3+ 离子掺杂YInGe 2 O 7 荧光粉在紫外光照射下的光致发光特性

Pr 3+ 离子掺杂银格2 O 7 荧光粉是通过振动研磨固态反应合成的。In 3+ 和O 2- 离子之间的电荷转移跃迁的激发峰有红移，因为氧空位的数量改变了结构，这导致了晶体场的变化。结果表明，银戈 2 O 7 :Pr 样品在 263 nm 激发下的发射光谱在 486 nm 和 604 nm 处出现两个主要峰，分别归属于 3 P 0 → 3 H 4 和 1 D 2 → 3 H 4 跃迁。(Y 1-x Pr x )InGe 2 O 7 磷光体的色度坐标随Pr 3+ 掺杂浓度而变化，从白色、绿色到蓝色。这具有作为用于紫外发光二极管的白色发光磷光体的潜在应用。