Journal of Luminescence最新文献_第3页

Fast fabrication of all-inorganic monolithic phosphor ceramic module for reflection-type laser lighting 反射型激光照明用全无机单片荧光粉陶瓷模块的快速制备

IF 3.6 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence

Pub Date : 2026-01-27 DOI: 10.1016/j.jlumin.2026.121779

Yu Yao , Xinrong Chen , Feng Wang , Heyu Wang , Bingguo Liu , Jian Xu , Baoli Du , Liqiang Ma , Aochen Du , Carsten Dam-Hansen , Ole B. Jensen

The development of ultra-high-brightness laser-driven phosphor-converted light sources is significantly challenged by high-power-density laser irradiation, primarily due to the thermal quenching effect induced by excessive heat accumulation in the phosphor. Conventional approaches aimed at improving the heat dissipation performance of phosphor converters, such as phosphor-in-glass (PiG) and ceramic plates, often requiring the use of attached substrates and thermal interface materials (TIMs), tend to be relatively complex and susceptible to delamination at the interfaces. Here, we proposed a fast, low-cost and TIM-free fabrication of monolithic ceramic-glass modules with integrated top YAG:Ce phosphor layer and bottom alumina layer (as substrate). In the fabricated modules, tight interfacial bonding without cracks was achieved between the phosphor layer and the alumina layer, which is attributed to their matched thermal expansion coefficients as well as a shared glass component. The effects of the phosphor layer’s thickness and glass ratio were examined with respect to the absorption of incident light and the subsequent heat dissipation, as the luminous efficacy is directly governed by the converter’s thermal management. Also, the effects of thickness and glass ratio of phosphor layer on fluorescent-emitting spot expansion (compared to laser spot) and luminous exitance were also investigated. This study not only provides a novel design of a phosphor module for laser lighting but also identifies the critical parameters for enhancing its photo-thermal performance to meet the demands of higher-power laser lighting applications.

高功率密度激光辐照对超高亮度激光驱动磷光转换光源的发展提出了重大挑战，这主要是由于磷光体中过多的热量积累引起的热猝灭效应。旨在改善荧光粉转换器散热性能的传统方法，如玻璃内磷（PiG）和陶瓷板，通常需要使用附加基板和热界面材料（TIMs），往往相对复杂，容易在界面处分层。在这里，我们提出了一种快速，低成本和无tim的单片陶瓷玻璃模块的制造方法，该模块集成了顶部YAG:Ce荧光粉层和底部氧化铝层（作为衬底）。在制造的模块中，荧光粉层和氧化铝层之间实现了紧密的界面结合，没有裂缝，这归因于它们匹配的热膨胀系数以及共享的玻璃组件。研究了荧光粉层厚度和玻璃比例对入射光的吸收和随后的散热的影响，因为光效直接由转换器的热管理决定。此外，还研究了荧光粉层厚度和玻璃化比对荧光光斑扩展（与激光光斑相比）和发光度的影响。该研究不仅为激光照明提供了一种新颖的荧光粉模块设计，而且确定了提高其光热性能的关键参数，以满足更高功率激光照明应用的需求。

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引用次数: 0

Laser annealing enhances the color purity and thermal stability of Y2O3: Eu3+ fluorescent phosphors 激光退火提高了Y2O3: Eu3+荧光荧光粉的色纯度和热稳定性

IF 3.6 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence

Pub Date : 2026-01-27 DOI: 10.1016/j.jlumin.2026.121782

Yong Tang , Jianwei Zhao , Yi Li , Yujing Wang , Guangqiu Zhang , Yihang Zhao , Lirong Qin

In this study, we demonstrate a synergistic approach combining hydrothermal synthesis with laser annealing to fabricate Y₂O₃:xEu³⁺ phosphors (x = 0.5, 1, 2, 5, 8, 10 %). When the doping concentration is 5 % Eu³⁺, the photoluminescence performance of the sample is the best, with the maximum emission intensity and a longer lifetime. The phosphor obtained by laser annealing, when excited by a 395 nm laser, emits light with a higher color purity than that obtained by traditional annealing; its thermal stability is also improved. Rietveld refinement confirms laser processing promotes preferential Eu³⁺ occupation at low-symmetry C₂ sites, optimizing electric dipole transitions. Meanwhile, both Fourier transform infrared spectroscopy and absorption spectroscopy tests have proved that the performance of the laser-annealed samples is higher than that of the samples annealed in the furnace. In conclusion, laser annealing can be used as a new method for preparing high-performance rare earth luminescent materials.

在这项研究中，我们展示了一种将水热合成与激光退火相结合的协同方法来制备Y2O3:xEu3+荧光粉（x = 0.5, 1,2,5,8,10 %）。当掺杂浓度为5% Eu3+时，样品的光致发光性能最好，发射强度最大，寿命更长。激光退火得到的荧光粉，在395 nm激光激发下，发出的光比传统退火得到的光具有更高的色纯度；其热稳定性也得到了改善。Rietveld细化证实，激光加工促进了低对称性C2位点的Eu3+优先占据，优化了电偶极子跃迁。同时，傅里叶变换红外光谱和吸收光谱测试都证明了激光退火样品的性能高于炉内退火样品。综上所述，激光退火可以作为制备高性能稀土发光材料的一种新方法。

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引用次数: 0

Enhanced performance of InGaN-based green resonant cavity light-emitting diodes with superlattice electron blocking layer 具有超晶格电子阻挡层的ingan基绿色谐振腔发光二极管的性能增强

IF 3.6 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence

Pub Date : 2026-01-23 DOI: 10.1016/j.jlumin.2026.121773

Haseena Noor, Muhammad Usman, Shazma Ali, Anuda Bibi, Aiman Fatima

We numerically investigated green InGaN-based resonant cavity light-emitting diodes (RCLEDs). By incorporating an AlGaN/InGaN superlattice electron-blocking layer (SL EBL) along with a highly reflective silver (Ag) bottom mirror and a dielectric distributed Bragg reflector (DBR) as the top mirror, the device performance was significantly enhanced. Simulation results show that electron and hole concentrations increased by ∼7 % and ∼29 %, respectively, compared to the reference RCLED. The SL EBL RCLED effectively suppresses electron overflow while improving hole injection, thereby boosting radiative recombination and output power by 29 % and 122 %, respectively, with a narrow FWHM of 5.3 nm. These results demonstrate that the AlGaN/InGaN SL EBL is an effective method for improving the performance of green RCLEDs.

我们数值研究了绿色基于ingan的谐振腔发光二极管（RCLEDs）。通过将AlGaN/InGaN超晶格电子阻挡层（SL EBL）与高反射银（Ag）底镜和介电分布布拉格反射器（DBR）作为顶镜，器件性能得到了显著提高。模拟结果表明，与参考rcle相比，电子和空穴浓度分别提高了~ 7%和~ 29%。slebl rcle有效抑制了电子溢出，同时改善了空穴注入，从而使辐射复合和输出功率分别提高了29%和122%，FWHM窄至5.3 nm。这些结果表明，AlGaN/InGaN SL EBL是提高绿色发光二极管性能的有效方法。

引用次数: 0

Peculiarities in the prompt isothermal luminescence decay of four feldspars 四种长石的快速等温发光衰减特性

IF 3.6 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence

Pub Date : 2026-01-22 DOI: 10.1016/j.jlumin.2026.121777

Th. Lampoudi , P. Konstandinidis , G.S. Polymeris , G. Kitis

The prompt isothermal (PID) decay of luminescence at a stable temperature is defined as an specific stimulated luminescence effect. The PID stimulation mode is described by three types of analytical expressions: two derived from the one-trap-one-recombination model (OTOR) and another from the tunneling recombination model. These two families of models exhibit potentially significant differences. Specifically, the OTOR-based is expected to retain an exponential dependence of the decay on temperature, whereas the tunneling recombination model may exhibit temperature-independent behavior. The present work studies the PID of luminescence of four feldspar samples in order to investigate the delocalized or localized nature of the decay. The initial rise technique was applied in order to examine if the glow curve of all feldspar are due to discrete or continuous energy levels. All PID curves obtained were fitted by three analytical expressions derived from OTOR delocalized and localized models as well as from a tunneling (localized) recombination model. The results showed that the PID effect presents a weak dependence of decay temperature yielding activation energy values much lower that the values of initial rise. Special attention was given to fitting parameters which are microscopic quantities characteristic of the trapping and recombination systems. The basic question arisen from this work is why in the framework of the same measurement the TL during linear heating is due to delocalized transitions whereas the TL from decay at stable temperature is due to localized transitions.

在稳定温度下，发光的快速等温衰减被定义为一种特定的受激发光效应。PID增产模式由三种解析表达式描述：两种来自一圈闭一重组模型（OTOR），另一种来自隧道重组模型。这两类模型表现出潜在的显著差异。具体来说，基于otor的模型预计将保持衰减对温度的指数依赖性，而隧道复合模型可能表现出与温度无关的行为。本文研究了四种长石样品的发光PID，以探讨其衰变的离域或局域性质。采用最初的上升技术是为了检验所有长石的发光曲线是由于离散的还是连续的能级。所有得到的PID曲线都是由OTOR离域和局部模型以及隧道（局部）重组模型导出的三个解析表达式拟合的。结果表明，PID效应对衰减温度的依赖性较弱，产生的活化能值远低于初始上升值。特别注意了圈闭和复合系统的微观特征参数的拟合。从这项工作中产生的基本问题是，为什么在同一测量的框架中，线性加热期间的TL是由于离域跃迁，而稳定温度下衰变的TL是由于局部跃迁。

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引用次数: 0

Ultrafast charge separation in one-dimensional CsPbBr3 perovskite nanorods 一维CsPbBr3钙钛矿纳米棒的超快电荷分离

IF 3.6 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence

Pub Date : 2026-01-22 DOI: 10.1016/j.jlumin.2026.121750

Guangrui Jia, Xiangrong Zhang, Zunlue Zhu, Zhaoyong Jiao, Chaochao Qin, Shuwen Zheng

One-dimensional (1D) CsPbBr₃ nanorods stand out due to their high crystallinity and aspect ratio. However, the charge separation process in CsPbBr₃ nanorods structures is still unclear. Herein, we quantitatively analyzed the charge separation dynamics in CsPbBr₃ nanorods with benzoquinone (BQ) and phenothiazine (PTZ) molecules using ultrafast transient absorption spectroscopy. The exciton in the CsPbBr₃ nanorod is effectively dissociated by electron transfer with a rate of 5.95 × 10¹⁰ s⁻¹ while the hole transfer rate to PTZ is 1.31 × 10¹¹ s⁻¹. The efficient charge transfer rate and long-lived charge separation state in CsPbBr₃ nanorod hybrids exhibit great potential in photocatalysis.

一维（1D） CsPbBr3纳米棒因其高结晶度和高纵横比而脱颖而出。然而，CsPbBr3纳米棒结构中的电荷分离过程尚不清楚。本文利用超快瞬态吸收光谱定量分析了CsPbBr3纳米棒与苯醌（BQ）和吩噻嗪（PTZ）分子的电荷分离动力学。CsPbBr3纳米棒中的激子通过电子转移有效解离，电子转移速率为5.95 × 1010 s−1，空穴到PTZ的转移速率为1.31 × 1011 s−1。CsPbBr3纳米棒杂化物具有高效的电荷转移速率和长寿命的电荷分离状态，在光催化方面具有很大的潜力。

引用次数: 0

DFT and experimental investigation of nanostructured boron subphthalocyanine chloride-films based hybrid photodiodes: Bridging organic and inorganic materials for sustainable light detection 基于纳米结构亚酞菁氯硼薄膜的杂化光电二极管的DFT和实验研究：用于可持续光探测的桥接有机和无机材料

IF 3.6 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence

Pub Date : 2026-01-21 DOI: 10.1016/j.jlumin.2026.121757

Ibtisam Alali , Nada Alhathlaul , Alaa Muqbil Alsirhani , Shimaa Abdel Halim , A.A.M. Farag

This study presents a comprehensive investigation of boron subphthalocyanine chloride (B-SubPcCl), combining computational and experimental approaches to reveal its unique structural, electronic, and optoelectronic characteristics. DFT calculations at the B3LYP/SDD level reveal that the molecule adopts a non-planar geometry and exhibits a ground-state energy gap of 2.68 eV, a substantial dipole moment of 8.19 D, and a first hyperpolarizability significantly exceeding that of urea, confirming its strong nonlinear optical (NLO) potential. Complementary NBO and MEP analyses demonstrate pronounced intramolecular charge transfer and clearly defined reactive regions, emphasizing the molecule's inherent electronic versatility and suitability for advanced optoelectronic applications. Experimentally, thermally evaporated thin films exhibit uniform nanocrystalline morphology with an average grain size of 27.1 nm and low RMS roughness (∼2.8 nm), as confirmed by HRTEM and AFM. Optical studies reveal multiple band gaps (1.35, 2.24, and 2.78 eV) with broad absorption spanning UV–visible–NIR regions. The Au/B-SubPcCl/n-Si/Al heterojunction shows strong rectifying behavior with a dark rectification ratio exceeding 10³, high responsivity, and detectivity, alongside fast, stable phototransient response and a light-dependent resistance ratio above 30 at −2 V. These results establish B-SubPcCl as a highly promising material for advanced optoelectronic and NLO devices, combining computational predictions with experimental validation to highlight its novel multifunctional performance.

本研究对亚酞菁氯化硼（B-SubPcCl）进行了全面的研究，结合计算和实验方法揭示了其独特的结构、电子和光电子特性。在B3LYP/SDD水平上的DFT计算表明，该分子具有非平面几何结构，基态能隙为2.68 eV，偶极矩为8.19 D，第一超极化率明显超过尿素，证实其具有很强的非线性光学（NLO）潜力。互补的NBO和MEP分析显示了明显的分子内电荷转移和明确定义的反应区，强调了分子固有的电子多功能性和先进光电应用的适用性。实验中，热蒸发薄膜表现出均匀的纳米晶形态，平均晶粒尺寸为27.1 nm， RMS粗糙度低（~ 2.8 nm），由HRTEM和AFM证实。光学研究显示多个带隙（1.35,2.24和2.78 eV）具有广泛的吸收，跨越紫外可见-近红外区域。Au/B-SubPcCl/n-Si/Al异质结具有强整流行为，暗整流比超过103，高响应率和探测率，以及快速，稳定的光瞬态响应和在−2 V下超过30的光相关电阻比。这些结果表明B-SubPcCl是一种非常有前途的先进光电和NLO器件材料，将计算预测与实验验证相结合，以突出其新颖的多功能性能。

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引用次数: 0

Luminescence modulation of blue LED excitable Er3+-doped phosphor for both NIR-I and NIR-II emission 蓝色LED可激发Er3+掺杂荧光粉对NIR-I和NIR-II发射的发光调制

IF 3.6 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence

Pub Date : 2026-01-20 DOI: 10.1016/j.jlumin.2026.121762

Yuansheng Ma , Xing Zhang , Xu Yang , Zihao Ren , Weizhen Zhang , Xu Li , Yingnan Guo , Fenghe Wang

Er³⁺-doped phosphors have fascinating near-infrared (NIR) emission around 1.5 μm; however, they suffer from low NIR efficiency and are difficult to be excited by blue light. Herein, an Er³⁺ doped LiSc₂SbO₆ phosphor was successfully synthesized and its luminescence performance under blue excitation has been improved in the following ways: distance control between adjacent Er³⁺ ions; regulation of luminescence center symmetry; and blue light absorption enhancement. The Cr³⁺ co-dope broadens the emission spectra and covers both NIR-I and NIR-II regions (700–1650 nm). Notably, benefitting from the [Zn²⁺-Zn²⁺] ions pair replacement and Cr-Er energy transfer optimization, the blue light excitable NIR-II emission from Er³⁺ achieves an intensity 26.5 times higher, and the total NIR-I and NIR-II emission intensity enhanced by 39.2 times. The dual NIR bands of Er³⁺,Cr³⁺ co-doped (LiSc)_1-yZn_2yScSbO₆ paves the way for NIR light sources pumped by commercial blue light-emitting diode (LED) chips in potential night-vision, and infrared imaging applications.

掺Er3+的荧光粉在1.5 μm左右具有迷人的近红外发射；然而，它们的近红外效率很低，而且很难被蓝光激发。本文成功合成了Er3+掺杂的lis2sbo6荧光粉，并通过以下方式改善了其在蓝色激发下的发光性能：控制相邻Er3+离子之间的距离；发光中心对称的调节；蓝光吸收增强。Cr3+共掺杂拓宽了发射光谱，覆盖了NIR-I和NIR-II区域（700 ~ 1650 nm）。值得注意的是，得益于[Zn2+-Zn2+]离子对置换和Cr-Er能量转移优化，Er3+的蓝光可激发NIR-II发射强度提高了26.5倍，NIR-I和NIR-II总发射强度提高了39.2倍。Er3+，Cr3+共掺杂（LiSc）1-yZn2yScSbO6的双近红外波段为商用蓝色发光二极管（LED）芯片在潜在的夜视和红外成像应用中泵浦近红外光源铺平了道路。

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引用次数: 0

Concentration-dependent on structural and optical behaviors of Yb2O3-modified Nd3+-doped phosphate glasses yb2o3修饰的掺Nd3+磷酸盐玻璃的结构和光学行为

IF 3.6 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence

Pub Date : 2026-01-20 DOI: 10.1016/j.jlumin.2026.121776

M. Shoaib , He Yongtai , A. Ahmad , Xingfa Zi , I. Khan , Gul Rooh , N. Chanthima , N. Intachai , S. Kothan , N. Kiwsakunkran , J. Kaewkhao

In the present work, the effects of Yb³⁺ ion concentrations on the physical, optical and structural properties of Nd³⁺ ions doped phosphate glasses have been investigated. A series of P₂O₅-Nb₂O₅-Na₂O-Li₂O-Nd₂O₃-Yb₂O₃ glasses were synthesized through melt quenching technique. The study shows that with the increasing concertation of Yb₂O₃, the density of the samples increases and the molar volume decreases, demonstrating structural changes. The structure changes also recorded from the FTIR and RAMAN spectra. The absorption spectra show the transition bands associated to Nd³⁺ and Yb³⁺ transitions, and the obvious hypersensitive transitions recorded at 582 nm. The Judd-Ofelt analysis identifies intensity parameters with Ω ₄>Ω₂>Ω ₆ trend, that can be further used to calculate radiative properties. Furthermore, the 1060 nm near-infrared emission corresponding to the Nd³⁺ (⁴F_3/2 → ⁴I_11/2) transition is significantly affected by the content of Yb³⁺ ions demonstrating the energy transfer from Nd³⁺ to Yb³⁺ ions. The optimum Nd³⁺: Yb³⁺ molar ratio of 1.0: 0.7 shows enhanced luminescence, making these glasses promising candidates for photonic applications such as lasers and light amplifiers. The study provides valuable insights into the optimization of rare earth ions concentrations in the phosphate glass matrix for use in advanced optical technologies.

本文研究了Yb3+离子浓度对Nd3+离子掺杂磷酸盐玻璃的物理、光学和结构性能的影响。采用熔体淬火技术合成了P2O5-Nb2O5-Na2O-Li2O-Nd2O3-Yb2O3系列玻璃。研究表明，随着Yb2O3浓度的增加，样品的密度增大，摩尔体积减小，呈现出结构变化。FTIR和RAMAN光谱也记录了结构的变化。吸收光谱显示Nd3+和Yb3+跃迁相关的跃迁带，在582 nm处记录到明显的超敏跃迁。Judd-Ofelt分析确定了具有Ω 4>；Ω2>；Ω 6趋势的强度参数，可进一步用于计算辐射特性。此外，Nd3+ （4F3/2→4I11/2）跃迁对应的1060 nm近红外发射受到Yb3+离子含量的显著影响，表明Nd3+向Yb3+离子的能量转移。最佳的Nd3+: Yb3+摩尔比为1.0:0.7，显示出增强的发光，使这些玻璃成为光子应用（如激光和光放大器）的有希望的候选者。该研究为优化磷酸盐玻璃基质中的稀土离子浓度提供了宝贵的见解，可用于先进的光学技术。

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引用次数: 0

Intense green upconversion and temperature sensing properties of GdAl3(BO3)4: Er3+ and Er3+/Yb3+ phosphors GdAl3(BO3)4: Er3+和Er3+/Yb3+荧光粉的强绿色上转换和温度传感性能

IF 3.6 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence

Pub Date : 2026-01-19 DOI: 10.1016/j.jlumin.2026.121763

Venkata Surya Bhagavan Netheti , Bungala Chinna Jamalaiah , Pidaparthy Lalitha Saranya , Guddety Ramachandra Reddy , Mangali Madhu Sekhar

GdAl₃(BO₃)₄: Er³⁺ and Er³⁺/Yb³⁺ phosphors were prepared through solid state reaction method and characterized. The crystalline phase was studied by powder X-ray diffraction technique, the occurrence of several vibrational bonds was recognized by Fourier transform infrared spectroscopy and the surface morphology was verified by scanning electron microscopy. The down and up conversion emission spectra reveal three emission bands related to ²H_11/2 → ⁴I_15/2 (∼521 nm), ⁴S_3/2 → ⁴I_15/2 (∼547 nm) and ⁴F_9/2 → ⁴I_15/2 (∼658 nm) transitions up on 377 nm and 980 nm excitation, respectively. An effective sensitization of Yb³⁺ ions improves the intensity of green emission upon 980 nm upconversion. The GdAl₃(BO₃)₄: 1 %Er³⁺/3 %Yb³⁺ phosphor exhibited a noteworthy thermal stability with an activation energy of 0.314 eV. The same was more potential for not only the design of green LEDs, but also for non-contact temperature sensing devices. It possesses an absolute sensitivity of 0.00415 K⁻¹ at 473 K and relative sensitivity of 0.576 % K⁻¹ at 373 K with an excellent thermal cycling repeatability.

采用固相反应法制备了GdAl3(BO3)4: Er3+和Er3+/Yb3+荧光粉，并对其进行了表征。采用粉末x射线衍射技术研究了晶相，傅里叶变换红外光谱识别了几个振动键的存在，扫描电镜对表面形貌进行了验证。上下转换发射光谱分别显示了377 nm和980 nm激发下2H11/2→4I15/2 （~ 521 nm）、4S3/2→4I15/2 （~ 547 nm）和4F9/2→4I15/2 （~ 658 nm）三个发射带。Yb3+离子的有效敏化提高了980 nm上转换时的绿色发射强度。GdAl3(BO3) 4:1 %Er3+/ 3% Yb3+荧光粉表现出良好的热稳定性，活化能为0.314 eV。不仅绿色led的设计潜力巨大，而且非接触式温度传感设备的设计潜力也很大。在473 K时的绝对灵敏度为0.00415 K−1，在373 K时的相对灵敏度为0.576 K−1，具有良好的热循环重复性。

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引用次数: 0

Highly-sensitive optical temperature sensing and color-tunable upconversion emission based on dual luminescence centers of LuNbO4:Yb3+, Er3+, Tm3+ 基于双发光中心LuNbO4:Yb3+， Er3+， Tm3+的高灵敏度光学温度传感和颜色可调上转换发射

IF 3.6 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence

Pub Date : 2026-01-19 DOI: 10.1016/j.jlumin.2026.121759

Chuan Sang, Yunze Liu, Ziyi Zhao, Ai Jian, Xu Zhou, Yongjian Zhou, Qi Xiao, Xiumei Yin, Xixian Luo

Lanthanide ions doped upconversion system with dual luminescence centers has attracted much interest in fields of display and temperature sensing. Herein, XNbO₄:Yb³⁺,Er³⁺ (X = Lu, Gd, Y) are synthesized by solid state method. LuNbO₄:Yb³⁺,Er³⁺ exhibits optimal upconversion luminescence under the same excitation conditions. Meanwhile, the appropriate combination of dual luminescence centers for Er³⁺ and Tm³⁺ can easily achieve color-tunable emission including white emission by adjusting the content of doped ions upon 980 nm excitation. The improving proportion of red emission with increasing Tm³⁺ is assigned to the effective energy transfer between Er³⁺ and Tm³⁺. Furthermore, UC luminescence thermometric performances are systematically investigated. Using non-thermally coupled levels of ⁴F_9/2 (Er³⁺) and ³F_2,3 (Tm³⁺) based on dual luminescence centers can obtain higher sensitivity performance (maximum absolute and relative sensitivity of 69.1 × 10⁻³ K⁻¹ and 4.0 % K⁻¹) compared to thermally coupled levels of ²H_11/2 and ⁴S_3/2. The above results indicate that LuNbO₄:Yb³⁺,Er³⁺,Tm³⁺ is a promising upconversion luminescence material for solid-state displays and optical thermometry.

镧系离子掺杂的双发光中心上转换系统在显示和温度传感领域引起了广泛的关注。本文采用固相法合成了XNbO4:Yb3+，Er3+ （X = Lu, Gd， Y）。在相同的激发条件下，LuNbO4:Yb3+，Er3+表现出最佳的上转换发光。同时，适当组合Er3+和Tm3+的双发光中心，可以在980 nm激发下通过调节掺杂离子的含量，实现包括白色在内的可调色发射。随着Tm3+的增加，Er3+和Tm3+之间的有效能量传递导致了红色发射比例的提高。此外，系统地研究了UC的发光测温性能。使用基于双发光中心的非热耦合能级4F9/2 （Er3+）和3F2,3 （Tm3+）相比于热耦合能级2H11/2和4S3/2，可以获得更高的灵敏度性能（最大绝对灵敏度和相对灵敏度分别为69.1 × 10−3 K−1和4.0% K−1）。上述结果表明，LuNbO4:Yb3+,Er3+，Tm3+是一种很有前途的固态显示和光学测温上转换发光材料。

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引用次数: 0