Optical thermometry based on up-conversion luminescence behavior of self-crystallized K₃YF₆:Er³⁺ glass ceramics

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• 作者：JiangKun CaoAuthor Vitae ; XiaoMan LiAuthor Vitae ; ZhongXiu WangAuthor Vitae ; YunLe WeiAuthor Vitae ; LiPing ChenAuthor Vitae ; Hai Guo ; ^{ghh@zjnu.cn" class="auth_mail" title="E-mail the corresponding author}Author Vitae
• 关键词：Glass-ceramics ; K3YF6 ; Self-crystallized ; Sensors
• 刊名：Sensors & Actuators: B. Chemical
• 出版年：2016
• 出版时间：1 March 2016
• 年：2016
• 卷：224
• 期：Complete
• 页码：507-513
• 全文大小：1975 K

文摘

Self-crystallized fluoride K₃YF₆ glass ceramics (GC) doped with lanthanide ions were successfully manufactured via traditional melt-quenching route with further heat-treatment. Different from common cases previously reported, nano-crystals have already formed after melt-quenching, which is beneficial to the realization of controllable glass crystallization to some degree for affording desirable nano-crystal size and activator partition. Optical spectroscopy analysis demonstrates the partition of the active centers into the K₃YF₆ crystalline lattice with low phonon energy. Hence, luminescence of GC doped with lanthanide ions is highly enhanced after further heat-treatment. Moreover, the temperature-dependent green up-conversion emissions of Er³⁺ doped GC were investigated by the fluorescence intensity ratio (FIR) of the thermally coupled emitting states (²H_11/2 and ⁴S_3/2). The sensitivity is 1.27% K⁻¹ at 300 K and the obtained high energy difference (ΔE) is 793 cm⁻¹. Such Er³⁺ doped K₃YF₆ GC may present potential application in optical temperature sensors.