Laser & Photonics Reviews
·
2026
·
IF 10
Ming Zhao,Yi Zhang,Qinfang Hu,Xinquan Zhou,Lixin Ning,Xinping Zhang
Eu 2+ -activated inorganic phosphors are widely used in optoelectronic fields due to their superior luminescence properties. However, stabilizing Eu 2+ dopants at trivalent Ln 3+ sites in Ln(III)-based phosphors (Ln = Y 3+ , La 3+ , and Lu 3+ ) remains challenging because of charge imbalance and lattice instability, which has limited related luminescence mechanistic insights and materials discovery. Here, we propose a universal strategy that introduces interstitial alkali-metal defects to break through the thermodynamic and kinetic constraints of Eu 3+ →Eu 2+ reduction in Ln(III)-based hosts. High-throughput experiments validate the effectiveness of this approach across multiple host systems. As a proof of concept in classical Lu 2 SiO 5 , the introduced interstitial Na drives the emission from a sharp red Eu 3+ line to a broad green Eu 2+ band at ∼500 nm with persistent luminescence exceeding 10 h. The interstitial Na defects act dually by promoting Eu 3+ →Eu 2+ reduction and serving as an afterglow energy reservoir. The remarkable afterglow property enables multifunctional applications in advanced information encryption and fingerprint recognition. This work demonstrates a promising approach to exploring Eu 2+ luminescence properties in established materials via defect-assisted reductive engineering, opening avenues for developing new optofunctional materials.
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高影响因子
Nanomaterials
·
2019
·Vol. 9
·期 3
·363
·
IF 4.034
Xinzhi Wang,Jianguo Tang,Guanghui Wang,Wei Wang,Junjie Ren,Wei Ding,Xinbo Zhang,Yao Wang,Wenfei Shen,Linjun Huang,Laurence A. Belfiore
In this research contribution, nano-aggregates have been fabricated by introducing lanthanide (Ln3+) ions into solutions of amphiphilic diblock copolymers of polystyrene-b-poly (acrylic acid) (PS-b-PAA). The coordination of acrylic acid segments to lanthanide cations induces diblock copolymer (BCPs) self-assembly in order to design stable white luminescent hybrid nanoparticles with fine uniform particle size. The introduction of Ln3+ions (Eu3+and Tb3+) bestows the micelles, precisely white light, upon excitation of 342 nm. Lanthanide coordination cross-linking of poly (acrylic acid) segments, or blocks, endows the micelles higher thermal stability than that of BCPs micelles without cross-linking. As the most important key point of this work, the regular and stable nano-particles with high emission quality can make fully flexible electroluminescent devices with self-formation or uncoordinated into polymer hosts. Instead of inorganic luminescent nanoparticles with hard cores, this method can potentially apply for fully flexible white-light emitting diodes (FFWLEDs).Keywords:nano-aggregates;diblock copolymer;fully flexible;white-light
研究领域:
材料科学
·
光学
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DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
You Li,Sai Xu,Yuefeng Gao,Yongze Cao,Xizhen Zhang,Hongquan Yu,Yichao Wang,Tianshuo Liu,Baojiu Chen
The intrinsic challenge to thermally responsive photoluminescent materials is pertaining to the limited thermal stability and reproducibility. Most prevailing photoluminescent agents suffer from constraints imposed by their frail chemical structure , rendering them fail to work at elevated temperatures for a long time. This inherent limitation curtails their utility within domains in anti-counterfeiting and encoded information storage. Herein, a series of double perovskite Cs 2 NaInCl 6 : Sb 3+ /Ln 3+ (Ln = Er, Dy, Tb, Ho) phosphors were synthesized using the high-temperature hydrothermal method . Upon ultraviolet light illumination, the blue emission band of self-trapped excitons (STEs) and intrinsic emissions of Ln 3+ are observed. In light of the variations in thermal quenching levels of the two emission centers and the effect of temperature on the lifetime of Ln 3+ , multi-mode thermometers with superior sensitivity are established. Moreover, they also can be used in anti-counterfeiting and encoding information storage, relying on the significant temperature-dependent color variation, excellent thermal stability and repeatability. The unique thermochromic properties and satisfactory stability of Cs 2 NaInCl 6 : Sb 3+ /Ln 3+ (Ln = Er, Dy, Tb, Ho) phosphors bring forward a new concept of developing multi-mode thermometers and reliable information encryption systems with the application of thermochromic materials.
研究领域:
材料科学
·
光学
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高影响因子
JOURNAL OF LUMINESCENCE
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2023
·
IF 3.6
Yuxuan Luo,Danyu Zhang,Shujun Xu,Lianjie Li,Liping Chen,Hai Guo
Herein, YNbO 4 (YNO):Bi 3+ ,Ln 3+ (Ln = Dy, Eu) phosphors were manufactured though high-temperature solid-phase reaction. Their structural properties, optical characteristics and energy transfer mechanisms (Bi 3+ →Ln 3+ ) were analyzed in detail, and their potential application in optical thermometry was explored. Under 312 nm excitation, YNO:Bi 3+ ,Ln 3+ phosphors show broad emission from Bi 3+ ions ( 3 P 1 → 1 S 0 ) and sharp peaks from 4f-4f transitions of Ln 3+ ions. YNO:Bi 3+ ,Ln 3+ samples exhibit high sensitivity and superior thermochromic properties in temperature sensing. For YNO:Bi 3+ ,Dy 3+ phosphor, the maximum absolute sensitivity ( S a ) and relative sensitivity ( S r ) reach 14.25 %K −1 (573 K) and 1.48 %K −1 (444 K), respectively. For YNO:Bi 3+ ,Eu 3+ phosphor, the maximum S a and S r reach 38.21 %K −1 (573 K) and 1.58 %K −1 (445 K), respectively. And the chromaticity shift of emission from YNO:Bi 3+ ,Eu 3+ phosphor is 0.38 for temperature from 303 to 573 K. Such results suggest that YNO:Bi 3+ ,Ln 3+ phosphors can be candidate for visual and highly sensitive optical thermometry.
研究领域:
材料科学
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光学工程
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高影响因子
JOURNAL OF RARE EARTHS
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2026
·
IF 9.6
Youwang Long,Lei Zhong,Yuefei Xiang,Yunhai Zhu,Zaidong Chen,Yuanqing Kang,Lei Zhou,Mingmei Wu
Developing efficient near-infrared (NIR) luminescence materials is crucial for next-generation NIR phosphor-converted light-emitting diodes (pc-LEDs). Cr 3+ -activated materials exhibit broadband NIR emission, however, they suffer from low efficiency and severe thermal quenching at wavelengths beyond 900 nm. To overcome these drawbacknd Membrane Technology, School of Chemical Engineering and Technology, Sun Yat-sen Uns, an efficient energy transfer pathway from Cr 3+ to Ln 3+ (Yb 3+ , Tm 3+ ) in Cs 2 NaLuCl 6 (CNLC) double perovskite single crystals was established. The Cr 3+ singly doped crystal shows broadband NIR emission peaking at 970 nm with an internal quantum efficiency (IQE) of 73.1%. Through effective Cr 3+ sensitization, the NIR-II emissions at 996 nm (Yb 3+ ) and 1222 nm (Tm 3+ ) are enhanced, along with the significantly improved luminescent thermal stability. Moreover, the co-doped system also exhibits superior IQE of 86.6% for CNLC:3 mol%Cr 3+ ,9 mol%Yb 3+ and 71.6% for CNLC:3 mol%Cr 3+ ,5 mol%Tm 3+ . The developed crystals integrated into a 540 nm-driven NIR LED delivers a NIR radiation power of 80.4 mW at a driving current of 600 mA, enabling high-resolution bioimaging and night vision applications. This work provides insight into energy transfer engineering to boost the luminescent efficiency and thermal stability in NIR-emitting materials.
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高影响因子
CRYSTENGCOMM
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2012
·Vol. 14
·期 14
·4786-4793
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IF 3.842
Qianming Wang,Zhengyang Zhang,Yuhui Zheng,Weisheng Cai,Yifei Yu
A systematic study of the preparation of lanthanide (Eu3+, Tb3+, Sm3+ and Dy3+) phosphors was carried out and luminescent materials (red, green, orange-red and blue-yellow) were successfully achieved at low temperature (70 °C) in 45 min, using simultaneous supersonic and microwave irradiation. Scanning and transmission electron microscopic images indicate that one-dimensional nanorods with diameters of 10–20 nm and lengths of up to 200 nm were formed. The phosphors were entrapped in cellulose gels and the corresponding hydrogels were also strongly emissive.
研究领域:
材料科学
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纳米技术
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发光材料
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凝胶化学
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2016
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IF 2.758
Jie Chen,Xiuqing Zhou,Ye Sheng,Xiaoming Xie,Murad M.A. Abualrejal,Meiqi Chang,Zhan Shi,Haifeng Zou
A series of size controllable Tb 3+ and/or Eu 3+ activated nano-sized silica phosphors have been successfully synthesized through a facile sol-gel method. The structure, morphology, compositions, and luminescence properties of as-prepared samples were well investigated using X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive spectrometer (EDS), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET) and photoluminescence spectroscopy (PL). The results showed that all as-prepared samples were spherical nanoparticles but the sizes reduced gradually with the temperature increased from 25 °C to 65 °C, which was contrary to the BET surfaces as well as the luminescence intensity. Under ultraviolet excitation, the SiO 2 :Ln 3+ (Ln=Eu, Tb) spherical nanoparticles showed characteristic red and green emissions corresponding to f-f transition of Eu 3+ and Tb 3+ , respectively. Moreover, the luminescence emissions of samples can be tuned from green to yellow, orange and red by co-doping the Tb 3+ and Eu 3+ ions in different concentration ratio into the SiO 2 host due to the efficient dipole–dipole energy transfer mechanism from Tb 3+ to Eu 3+ under 377 nm excitation. These results show that as-prepared phosphors may find potential applications in color display fields.
研究领域:
材料科学
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光学
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DOI
高影响因子
OPTICAL MATERIALS
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2025
·
IF 4.2
Hetong Zhu,Xin Ding,Jei Gao,Guifan Chen,Hailin Cong,Bing Yu
Near-infrared two-zone (NIR-Ⅱ,1000–1700 nm) luminescent nanocrystals (NCs) doped with lanthanum ions (Ln 3+ ) exhibit considerable potential in multiple technological fields. ALnS 2 (A = Na, K, Rb; Ln = La–Lu, Y) is expected to be an efficient matrix material due to its low cell symmetry, strong covalence, and low phonon energy. Here, we synthesized NaLaS 2 :Ln 3+ NCs doped with Nd 3+ , Yb 3+ , and Er 3+ by the high-temperature co-precipitation method, and their NIR luminescence characteristics were studied in detail. The addition of N, N-diphenyl thiourea can effectively alter the size of NaLaS 2 :Ln 3+ NCs. Under different excitation (ex = 808 and 980 nm), strong NIR-Ⅱ luminescence and temperature sensitivity were achieved in Nd 3+ single-doped, Yb 3+ /Er 3+ co-doped, and Nd 3+ /Yb 3+ /Er 3+ co-doped NaLaS 2 NCs, respectively. We found that the maximum relative temperature sensitivity of NaLaS 2 :Nd 3+ in the NIR-Ⅱ region is 0.72 % K −1 @140 K. The luminescence of NaLaS 2 :Yb 3+ /Er 3+ NCs in the NIR-Ⅱ region is not sensitive to temperature changes, but after adding Nd 3+ as a sensitizer, its NIR-Ⅱ region luminescence has a good temperature sensitivity (0.11 % K −1 @240 K). In addition, we coated the nano NIR material onto the surface of different materials, which can present a clear fingerprint under the near-infrared camera; using the orthogonal emission of Ln 3+ , nano-near-infrared materials show different information under different excitations, which shows its role in detection and information anti-counterfeiting.
研究领域:
材料科学
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纳米技术
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光学材料
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发光光谱学
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传感器与传感技术
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2020
·Vol. 31
·期 21
·18370-18380
·
IF 2.22
Yun Xiangyan,Zhou Jun,Zhu Yaohui,Molokeev Maxim S.,Jia Yetong,Wei Chao,Xu Denghui,Sun Jiayue
The discovery of stable and highly sensitive up-conversion (UC) phosphors using the fluorescence intensity ratio (FIR) is a significant challenge in the field of optical temperature sensor. Er 3+ /Ho 3+ /Tm 3+ -doped LiYbMo 2 O 8 UC phosphors with excellent luminescence properties were successfully synthesized through a high-temperature solid-state reaction, and the crystal structure and UC luminescence properties were discussed in detail. The UC process has been investigated by spectra pump power dependence and further explained via the energy level diagram. All emission processes about Er 3+ ions and Ho 3+ ions are two-photon processes and the blue emission process about Tm 3+ ions is a combination of two-photon process and three-photon process. Thermal sensing performances depended on FIR technology were estimated and the sensitivities of LiYb 1− x Mo2O8: x Ln 3+ included absolute sensitivity ( S a ) and relative sensitivity ( S r ) can produce particular change rules with the temperature, which can serve as excellent candidates for applications in optical temperature sensing. With the increase of temperature, the maximum values of S r of LiYb 1− x Mo 2 O 8 : x Ln 3+ are 1.16% K −1 (0.05Er 3+ ), 0.25% K −1 (0.01Ho 3+ ), and 0.51% K −1 (0.01Tm 3+ ), respectively. In addition, the S a value of LiYb 0.95 Mo 2 O 8 :0.05Er 3+ phosphor will reach the maximum (1.08% K −1 ) at 475 K, while the maximum values of S a of LiYb 0.99 Mo 2 O 8 :0.01Ho 3+ and LiYb 0.99 Mo 2 O 8 :0.01Tm 3+ are 0.16% K −1 , 0.14% K −1 .
研究领域:
材料科学
·
光学
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DOI
高影响因子
Materials Science & Engineering C-Materials for Biological Applications
·
2019
·
IF 4.959
Junping Ma,Changqing Yi,Cheuk-Wing Li
Hyaluronic acid (HA)-functionalized lanthanide-doped KGdF 4 nanoparticles were synthesized through two steps on a microfluidic platform. This microfluidic synthesis method allows better control of experimental conditions with lower labor and energy input than traditional beaker synthesis methods for large-scale production of nanoparticles with higher uniformity. First, Ln 3+ -doped KGdF 4 nanoparticles were ultrafast (in minutes) and continuously synthesized using a four-inlets microfluidic chip at room temperature. Then, HA is continuously functionalized on the surface of Ln 3+ -doped KGdF 4 nanoparticles using a T-shape chip through electrostatic adsorption. The synthesized nanoparticles show good uniformity, high biocompatibility, targeted cellular uptake, photoluminescence (PL) and magnetic resonance (MR) properties. This work highlights the potential of microfluidic platform for the development of multifunctional nanoparticles in biomedicine.
研究领域:
纳米技术
·
生物医学工程
·
材料科学
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DOI
PubMed
高影响因子
Inorganic Chemistry Frontiers
·
2025
·
IF 6.4
Boyang Wang,Yuankun Ren,Xiaohan Wei,Wei Yang,Haoming Su,Yu Liu,Jiaqi Liang,Xiyu Li
Lanthanide-doped fluorapatite (FAp:Ln3+) upconversion luminescence (UCL) probes exhibit good biocompatibility but suffer from low quantum yields under near-infrared (NIR) excitation. Here, we propose a universal MoO42− doping strategy that achieves 74-fold green UCL enhancement in FAp:Yb/Er/Mo (FYEM) under 980 nm excitation (quantum yield: 0.004% at 50 W cm−2). Remarkably, stable Ln3+/MoO42− dimers induce 4d–4f orbital hybridization, as validated by density functional theory (DFT) and X-ray photoelectron spectroscopy (XPS). This mechanism extends to self-sensitized systems: FAp:Er/Mo (FEM) achieves 156-fold UCL enhancement under 980 nm excitation, while FAp:Nd/Mo (FNM) integrates 84-fold UCL amplification with photothermal synergy (ΔT = 53.5 °C). Critically, the optimized FYEM material enables dual-mode imaging, with 808/980 nm excitation UCL and NIR-II downconversion luminescence for deep-tissue imaging, besides outstanding thermal sensitivity (SA = 1.04% K−1@323 K). This work establishes a biocompatible, multi-wavelength platform for deep-tissue diagnostics, photothermal therapy, and multimodal sensing and imaging.
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高影响因子
Advanced Optical Materials
·
2024
·Vol. 13
·期 2
·2402038
·
IF 8
Li Yuan,Haiqing Zhu,Wei Zhang,Linxin Yao,Yumiao Su,Wenmu Li
Controllable coordination and efficient sensitization of rare earth ions in polymer materials are key to achieving high-performance optoelectronic polymers. By designing aromatic diamines, polyimides are synthesized with 1,10-phenanthroline benzimidazole groups (PBG) in the polymer backbone. Utilizing the coordination between PBG and rare earth ions (Eu 3 ⁺, Tb 3 ⁺), polyimide-rare earth complexes are formed and precisely characterized their structures. The unique coordination allows PBG to effectively sensitize Eu 3 ⁺, resulting in efficient, long-lived red emission. Furthermore, PBG maintains excellent coordination with Eu 3 ⁺ in acidic environments, granting acid-responsive color changes for data encryption. Importantly, PBG sensitization of Tb 3 ⁺ enabled full-spectrum emission (CIE coordinates: (0.31, 0.35)) within a single rare earth-polyimide complex, due to electron transfer among the ions, ligands, and polymer. This leads to the design of a multi-layer PLED device with an optimal external quantum efficiency of 0.43% for white light emission (CIE coordinates: (0.28, 0.34)). Through comparative theoretical and experimental analysis, the photophysical behavior of these coordinated polyimides is explained and explored their photoluminescent and electroluminescent properties. This research integrates the advantages of rare earth elements and polyimides, creating novel luminescent polymers with diverse optical applications, providing a new strategy for designing luminescent coordination polymers.
研究领域:
材料科学
·
高分子化学
·
光电子学
·
稀土化学
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DOI
高影响因子
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