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Eu3+ activated LiSrVO4 phosphors: Emission color tuning and potential application in temperature sensing
Dyes and Pigments ( IF 4.5 ) Pub Date : 2018-01-03 , DOI: 10.1016/j.dyepig.2017.12.059
Xianju Zhou , Lingni Chen , Sha Jiang , Guotao Xiang , Li Li , Xiao Tang , Xiaobing Luo , Yu Pang

A series of color-tunable emitting LiSrVO4:Eu3+ phosphors were synthesized by solid state reaction. The Luminescence properties and temperature sensing performance were investigated. Under near ultraviolet (NUV) excitation, LiSrVO4: Eu3+ exhibited both the green broad band luminescence due to (VO4)3−groups and red sharp emission peaks of sensitized Eu3+ ions. The tunable color of high-brightness emission from green to red is realized by controlling the Eu3+ doping content. The optical thermometry of LiSrVO4: Eu3+ was studied via excitation intensity ratio between V-O charge transfer band and Eu3+ f-f transition at low temperature (10–323 K). The highest absolute sensitivity SA is found to be 8.6%. The red emission intensity of Eu3+ shows a linear relationship in high temperature range of 298–573 K. The maximum value of relative sensitivity SR is established as 2.2%K−1 @573 K. The LiSrVO4:Eu3+ phosphors might be a promising candidate for NUV based phosphor and temperature sensing in a wide temperature range.



中文翻译:

Eu 3+活化的LiSrVO 4荧光粉:发射颜色调整和在温度传感中的潜在应用

通过固相反应合成了一系列颜色可调的发光LiSrVO 4:Eu 3+荧光粉。研究了发光性质和温度感测性能。在近紫外(NUV)激发下,LiSrVO 4:Eu 3+既表现出由于(VO 43−基团引起的绿色宽带发光,又表现出敏化的Eu 3+离子的红色尖锐发射峰。通过控制Eu 3+的掺杂量,可以实现从绿色到红色的高亮度发射的可调颜色。LiSrVO 4:Eu 3+的光学测温通过在低温(10–323 K)下VO电荷转移带和Eu 3+ ff跃迁之间的激发强度比进行研究。发现最高绝对灵敏度S A为8.6%。Eu 3+的红色发射强度在298–573 K的高温范围内呈线性关系。相对灵敏度S R的最大值确定为2.2%K -1 @ 573K。LiSrVO 4:Eu 3+荧光粉在基于NUV的荧光粉和宽温度范围内的温度传感方面,可能是一个有前途的候选人。

更新日期:2018-01-03
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