Investigation on optical temperature sensing behaviour for Y467Si3O13:Tm3+,Yb3+ phosphors based on upconversion luminescence
Investigation on optical temperature sensing behaviour for Y467Si3O13:Tm3+,Yb3+ phosphors based on upconversion luminescence
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DOI：
10.1364/ome.8.001841
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发表时间：
2018-06
影响因子：
2.8
通讯作者：
Guibin Chen;Jia Zhang
中科院分区：
文献类型：
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作者：
Guibin Chen;Jia Zhang
为了探索新型上转换光温敏材料，采用固相反应法制备了一系列Tm 3 +-Yb 3+共掺Y 4. 67 Si 3 O 13（YSO）荧光粉。XRD分析表明，样品为单相结构。在980 nm激发下，Tm ~（3+）在近紫外-近红外范围内有4个主要发射峰。泵浦依赖性测量表明，Tm ~（3+）的蓝光和近红外发射分别为三光子和双光子过程。通过研究典型的YSO：0.5%Tm3+，10%Yb3+样品的温度依赖性，发现由于热耦合能级的存在，695/789和466/484 nm发射的荧光强度比（FIRs）都随着温度的升高而增加。通过相对标准偏差和循环试验考察了测量的重复性。测定了YSO：0.5%Tm ~（3+）、10%Yb ~（3+）的相对灵敏度和绝对灵敏度。
To explore new upconversion materials for optical temperature sensing, a series of Tm3+-Yb3+ codoped Y4.67Si3O13 (YSO) phosphors was prepared by solid-state reaction. The phase composition was examined by XRD patterns, revealing that the samples are single-phase. Upon 980 nm excitation, four main emission peaks of Tm3+ were observed from the near-ultraviolet to the near-infrared region. The pump-dependence measurement indicates that the blue and near-infrared emissions of Tm3+ are three- and two-photon processes, respectively. By studying the temperature-dependence of the typical YSO:0.5%Tm3+,10%Yb3+ sample, it has been found that the fluorescence intensity ratios (FIRs) of both the 695/789 and 466/484 nm emissions increase with increasing temperature due to the thermally-coupled levels. The repeatability of measurement was examined by relative standard deviation and cycle test. The relative and absolute sensitivities of YSO:0.5%Tm3+,10%Yb3+ were evaluated.