Efficient Color Tunable ZnWO4:Er3+-Yb3+ Phosphor for High Temperature Sensing

Q Engineering

Journal of Display Technology Pub Date : 2016-08-24 DOI:10.1109/JDT.2016.2602503

Vineet Kumar Rai;Anurag Pandey

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引用次数: 12

Abstract

The single monoclinic phase with nano-structured crystallites in the ZnWO ₄ : Er ³⁺ -Yb ³⁺ phosphor have been detected from structural investigations by using the X-ray diffraction (XRD) analysis. The spectral studies performed in the codoped phosphor upon 980 nm excitation emit radiations within the UV- NIR wavelength region. Diffuse reflectance and Fourier transform infrared (FTIR) analysis have been done to identify the presence of active ions and impurities in the prepared phosphor. The pump power dependence study results in green to red intensity ratio variation and thus a tuning in color of emitted light is observed. The observed emissions have been explained on the basis of excited state absorption (ESA), energy transfer (ET), and temporal evolution analysis. The temperature sensing performance of synthesized material studied upto ~798 K results the highest sensor sensitivity of about 14.63 × 10 ^-3 K ^-1 which confirms the suitability of present material for high temperature sensing with very good sensitivity.

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用于高温传感的高效彩色可调谐ZnWO4:Er3+-Yb3+荧光粉

通过X射线衍射（XRD）分析，在ZnWO4:Er3+-Yb3+荧光粉的结构研究中检测到了具有纳米结构晶粒的单斜晶相。在980nm激发下在共掺杂磷光体中进行的光谱研究在UV-NIR波长范围内发射辐射。已经进行了漫反射和傅立叶变换红外（FTIR）分析，以确定所制备的磷光体中活性离子和杂质的存在。泵浦功率依赖性研究导致绿色与红色强度比的变化，从而观察到发射光的颜色的调谐。在激发态吸收（ESA）、能量转移（ET）和时间演化分析的基础上，对观测到的发射进行了解释。研究的合成材料的温度传感性能高达~798 K，传感器灵敏度最高，约为14.63×10-3 K-1，这证实了本材料适用于具有良好灵敏度的高温传感。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Display Technology 工程技术-工程：电子与电气

CiteScore

1.50

自引率

0.00%

发文量

审稿时长

2.8 months

期刊介绍： This publication covers the theory, material, design, fabrication, manufacturing and application of information displays and aspects of display technology that emphasize the progress in device engineering, design and simulation, materials, electronics, physics, and reliability aspects of displays and the application of displays. The Journal is sponsored by EDS, seven other IEEE societies (BT, CES, CPMT, IA, IM, PHO and SSC) and the Optical Society of America (OSA).