Influence of the variation Yb³⁺ concentration and sintering temperature in GdVO₄: Tm³⁺/Yb³⁺ blue emission phosphors

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• 作者：Hyun Kyoung Yang^a ; Sung Jun Park^a ; Jin Young Park^a ; Jae-Yong Je^b ; ^{jjy04@dit.ac.kr}
• 关键词：GdVO4 ; Upconversion ; Phosphor
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：131
• 期：Complete
• 页码：475-482
• 全文大小：2436 K
• 卷排序：131

文摘

Gd0.99-xVO4:Tm3+0.01/Yb3+x phosphors with different Yb3+ concentration (0.01–0.07 mol) and sintering temperatures (450–600 °C) were synthesized by the planetary ball milling method. The structural properties were analyzed using the X-ray diffraction patterns, which conform the poly phase with Na3Gd(VO4)2 and GdVO4. Upconversion luminescence was investigated under the 975 nm laser diode. The upconversion spectra of Gd0.99-xVO4:Tm3+0.01/Yb3+x show two emission peak in 1G4 → 3H6 (477 nm, blue) and 3H4 → 3H6 (802 nm, NIR) of the Tm3+ transitions, together with the 2F5/2 → 2F7/2 transition of Yb3+. Gd0.92VO4:Tm3+0.01/Yb3+0.07 phosphor sintered at 600 °C is expected to find potential applications such as blue LED by the near infra-red (NIR) excitation.