熔盐合成的Er3+/Yb3+/Sr2+掺杂L-Ta2O5具有插层互生结构，提高了纯绿色上转换发光†

IF 5.1 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Chemistry C Pub Date : 2025-05-28 DOI:10.1039/D5TC00792E

Xuekai Wang, Yongze Cao, Guangming Niu, Huanhuan Zhang, Xianglan Yan, Yichao Wang, Sai Xu and Baojiu Chen

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引用次数: 0

摘要

以B2O3为溶剂，采用熔盐法制备了Er3+/Yb3+/Sr2+掺杂的L-Ta2O5上转换荧光粉。高分辨率透射电镜（HRTEM）结果表明，Er3+/Yb3+/Sr2+在L-Ta2O5中发生了插层共生。这种结构有利于能量从Yb3+转移到Er3+，产生出色的纯绿色上转换发光（UCL）强度。L-Ta2O5:Er3+/Yb3+/Sr2+的绿色UCL综合强度分别是β-NaYF4:Er3+/Yb3+和最佳NaY(WO4)2:Er3+/Yb3+样品的1.53倍和3.14倍。绝对和相对温度敏感度分别达到1.383%和0.992% K−1。在高压下，峰值质心位移速率达到0.273 nm GPa−1。L-Ta2O5:Er3+/Yb3+/Sr2+具有优异的性能，可用于UCL显示、温度和压力传感等领域。

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Molten salt-synthesized Er3+/Yb3+/Sr2+-doped L-Ta2O5 with an intercalated intergrowth structure to boost the pure green upconversion luminescence†

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Molten salt-synthesized Er3+/Yb3+/Sr2+-doped L-Ta2O5 with an intercalated intergrowth structure to boost the pure green upconversion luminescence†

Er³⁺/Yb³⁺/Sr²⁺-doped L-Ta₂O₅ upconversion phosphors were synthesized using the molten salt method with B₂O₃ as the solvent. High-resolution transmission electron microscopy (HRTEM) results showed that Er³⁺/Yb³⁺/Sr²⁺ underwent intercalated intergrowth in L-Ta₂O₅. This structure facilitates energy transfer from Yb³⁺ to Er³⁺, resulting in outstanding pure green upconversion luminescence (UCL) intensity. The green UCL integrated intensity of L-Ta₂O₅:Er³⁺/Yb³⁺/Sr²⁺ was 1.53 and 3.14 times greater than that of β-NaYF₄:Er³⁺/Yb³⁺ and the optimal NaY(WO₄)₂:Er³⁺/Yb³⁺ samples, respectively. The absolute and relative temperature sensitivity reached 1.383% and 0.992% K⁻¹, respectively. The shift rate of the peak centroids reached 0.273 nm GPa⁻¹ under high pressure. With its excellent performance, L-Ta₂O₅:Er³⁺/Yb³⁺/Sr²⁺ can be used in the fields of UCL display, temperature and pressure sensing.

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来源期刊

Journal of Materials Chemistry C MATERIALS SCIENCE, MULTIDISCIPLINARY-PHYSICS, APPLIED

CiteScore

10.80

自引率

6.20%

发文量

1468

期刊介绍： The Journal of Materials Chemistry is divided into three distinct sections, A, B, and C, each catering to specific applications of the materials under study: Journal of Materials Chemistry A focuses primarily on materials intended for applications in energy and sustainability. Journal of Materials Chemistry B specializes in materials designed for applications in biology and medicine. Journal of Materials Chemistry C is dedicated to materials suitable for applications in optical, magnetic, and electronic devices. Example topic areas within the scope of Journal of Materials Chemistry C are listed below. This list is neither exhaustive nor exclusive. Bioelectronics Conductors Detectors Dielectrics Displays Ferroelectrics Lasers LEDs Lighting Liquid crystals Memory Metamaterials Multiferroics Photonics Photovoltaics Semiconductors Sensors Single molecule conductors Spintronics Superconductors Thermoelectrics Topological insulators Transistors