新型硅酸盐型荧光粉K3(Y0.88Yb0.10Ho0.02)Si2O7的上转换光致发光及光学测温性能研究

摘要/Abstract

摘要： 本文采用普适的固相法合成一种新型硅酸盐K₃(Y_0.88Yb_0.10Ho_0.02)Si₂O₇荧光粉,并系统研究样品的上转换光致发光和光学测温性能。研究表明,在980 nm激发下,K₃(Y_0.88Yb_0.10Ho_0.02)Si₂O₇荧光粉表现出红光发射,主发射峰位于665 nm,归属于Ho³⁺的⁵F₅→⁵I₈跃迁。通过对发光强度和激发功率的对数变换,研究荧光粉的上转换机制和可能导致的上转换的光子反应,证明(⁵S₄,⁵F₂)→⁵I₈跃迁上转换发光机制为三光子机制,⁵F₅→⁵I₈跃迁则为双光子机制。K₃(Y_0.88Yb_0.10Ho_0.02)Si₂O₇荧光粉的⁵F₅/(⁵F₄,⁵S₂)的非热耦合能级的荧光强度比结果表现出其良好的光学测温潜力,经计算其最大灵敏度约为0.17 K^-1 (423 K)。

关键词: 上转换, 硅酸盐, 光学测温, 稀土发光, 光致发光, 固相法

Abstract: In this work, a new type of silicate K₃(Y_0.88Yb_0.10Ho_0.02)Si₂O₇ phosphor was synthesized by solid state method. The up-conversion photoluminescence and optical thermometry properties of samples were systematically studied. The results show that K₃(Y_0.88Yb_0.10Ho_0.02)Si₂O₇ phosphor exhibits red emission under 980 nm excitation. The main emission peak is located at 665 nm, which is attributed to the ⁵F₅→⁵I₈ transition of Ho³⁺. The up-conversion mechanism of the phosphor and the photon reaction which may lead to up-conversion were studied by logarithmic transformation of the luminescence intensity and excitation power. It is proved that the up-conversion luminescence process for the (⁵S₄,⁵F₂)→⁵I₈ transition is a three-photon mechanism, and the ⁵F₅→⁵I₈ transition is a two-photon mechanism. The fluorescence intensity ratio of the ⁵F₅/(⁵F₄,⁵S₂) non-thermal coupling energy level of K₃(Y_0.88Yb_0.10Ho_0.02)Si₂O₇ phosphor shows its good optical thermometry potential, and the maximum sensitivity is calculated to be about 0.17 K^-1 (423 K).

Key words: up-conversion, silicate, optical thermometry, rare earth luminescence, photoluminescence, solid state method

中图分类号:

滕雨含, 王建通, 龚长帅, 王渤文, 薛绪岩, 王雪娇. 新型硅酸盐型荧光粉K₃(Y_0.88Yb_0.10Ho_0.02)Si₂O₇的上转换光致发光及光学测温性能研究[J]. 人工晶体学报, 2024, 53(1): 115-122.

TENG Yuhan, WANG Jiantong, GONG Changshuai, WANG Bowen, XUE Xuyan, WANG Xuejiao. Up-Conversion Photoluminescence and Optical Thermometry Properties of Novel Silicate K₃(Y_0.88Yb_0.10Ho_0.02)Si₂O₇ Phosphor[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2024, 53(1): 115-122.

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新型硅酸盐型荧光粉K₃(Y_0.88Yb_0.10Ho_0.02)Si₂O₇的上转换光致发光及光学测温性能研究

Up-Conversion Photoluminescence and Optical Thermometry Properties of Novel Silicate K₃(Y_0.88Yb_0.10Ho_0.02)Si₂O₇ Phosphor

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