荧光粉
色度
发光
离子
分析化学(期刊)
材料科学
发射强度
化学
光电子学
光学
物理
有机化学
色谱法
作者
Danyu Zhang,Yuxuan Luo,ShuJun Xu,LianJie Li,JunYu Chen,Lei Lei,Hai Guo
摘要
Abstract In this paper, Y 4 GeO 8 :Bi 3+ ,Eu 3+ phosphor with dual emission centers was elaborated via conventional solid‐state reaction technology. Thorough research on the structure, morphology, and luminous properties of Y 4 GeO 8 :Bi 3+ ,Eu 3+ phosphor, the potential applications in optical thermometry were investigated by means of fluorescence intensity ratio and thermochromic techniques. Under 290 and 347 nm excitation, Y 4 GeO 8 :Bi 3+ ,Eu 3+ phosphor presents broadband emission from 3 P 1 → 1 S 0 transition of Bi 3+ ions and characteristic emission peaks from 4f–4f transition of Eu 3+ ions. Outstanding temperature‐sensing capabilities are acquired from Y 4 GeO 8 :Bi 3+ ,Eu 3+ phosphor. The maximum relative sensitivity ( S r ) can attain 1.51% K −1 ( λ ex = 290 nm). With temperature raising (303–513 K), the emitted color of Y 4 GeO 8 :Bi 3+ ,Eu 3+ phosphor ( λ ex = 290 nm) shifts from faint yellow to red with a high chromaticity shift (0.180), which can be distinguished by the unaided eye clearly. Our results indicate that Y 4 GeO 8 :Bi 3+ ,Eu 3+ phosphor has potential applications in optical temperature measurement and high‐temperature safety marker.
科研通智能强力驱动
Strongly Powered by AbleSci AI