ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19
Tao Hu,Yulan Guo,Xiaodong Yi,Ming Zhao,Yan Gao,Hang Lin
Smart multi-stimuli-responsive luminescence materials, which integrate diverse optical functionalities and hold significant promise for cutting-edge optoelectronic applications, have advanced notably in recent years. However, traditional phosphor powders often suffer from instability due to organic binders, limiting their practical utility. This study presents a novel multi-responsive luminescent glass ceramic (GC) based on SrMg 2 Al 6 Si 9 O 30 :Eu 2+ osumilite, developed via an in situ glass crystallization strategy. The material uniquely integrates efficient and stable photoluminescence (PL, quantum yield 76%), persistent luminescence (PersL), thermally stimulated luminescence (TSL), and X-ray-excited radioluminescence (RL, light yield 13 856 photons/MeV) in a single, intrinsically stable matrix. Molecular dynamics simulations reveal that the precursor glass exhibits crystal-like topological configurations, promoting nucleation of the SrMg 2 Al 6 Si 9 O 30 :Eu 2+ phase with a low crystallization activation energy (226.7 kJ/mol). The GC demonstrates exceptional thermal stability and robust performance in applications: high-security anti-counterfeiting via dynamic multi-mode (PL/PersL/TSL) information encoding, and X-ray detection with 8 lp/mm spatial resolution, outperforming commercial scintillators like BGO. These findings establish a new paradigm for designing stable, multi-responsive luminescent materials, paving the way for next-generation integrated optical devices.
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DOI
高影响因子
JOURNAL OF RARE EARTHS
·
2020
·Vol. 39
·期 3
·261-268
·
IF 3.104
Fuwen Liu,Degang Deng,Ming Wu,Bowen Chen,Liuyan Zhou,Shiqing Xu
Eu 2+ /Sm 3+ co-doped dual-emitting Sr 4 La(PO 4 ) 3 O phosphors were synthesized through a convenient high temperature solid state reaction in reductive atmosphere. The structure, luminescence, energy transfer and temperature-dependent luminescence properties of Eu 2+ /Sm 3+ co-doped Sr 4 La(PO 4 ) 3 O phosphors were researched and analyzed in detail. The blue emission of Eu 2+ and the red emission of Sm 3+ can work together as FIR signals. Based on the different response characteristics of these two ion emissions to temperature, Sr 4 La(PO 4 ) 3 O:Eu 2+ /Sm 3+ phosphor achieves the relative sensitivity of 0.48384%/K and a wide range of temperature measurements from room temperature to 573 K. The results reveal that the Sr 4 La(PO 4 ) 3 O:Eu 2+ /Sm 3+ phosphor has application prospect in the field of high temperature optical thermometry. The energy transfer mechanism is proved to be the dipole-dipole interaction between Eu 2+ and Sm 3+ ions.
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高影响因子
CERAMICS INTERNATIONAL
·
2018
·Vol. 44
·期 13
·15432-15439
·
IF 3.057
Fengping Ruan,Degang Deng,Hua Yu,Ming Wu,Bowen Chen,Shiqing Xu,Ruoshan Lei
We synthesized and investigated the effect of Eu 2+ ions doping in a novel phosphor-silicate Ca 8 Sc 2 (PO 4 ) 6 (SiO 4 ) phosphor. The structure and photoluminescence properties were determined by X-ray powder diffraction Rietveld refinement , diffuse reflection spectra, emission-excitation spectra, decay curves and temperature dependence spectra. The phosphors showed an asymmetric broad-band blue emission (Eu 2+ ) with peak at 470 nm. Furthermore, we presented the Ca 7.96 Sc 2 (PO 4 ) 6- y (SiO 4 ) 1+ y :0.04Eu 2+ phosphors by co-substituting [Eu 2+ -Si 4+ ] for [Ca 2+ -P 5+ ], and different behaviors of luminescence evolution in response to structural variation were verified among the series of phosphors. The results were attributed to the presence of multi Ca 2+ sites, resulting in the mixing of blue and green emissions for Eu 2+ ions. The complex anion substitution of [PO 4 ] 3- by [SiO 4 ] 4- induced an increased crystal field splitting of the Eu 2+ ions, which caused a decrease in emission energy from the 5d excited state to the 4f ground state and a resultant red-shift from 470 nm to 520 nm. All the properties indicated that the Ca 8 Sc 2 (PO 4 ) 6 (SiO 4 ):Eu 2+ phosphors have potential application for color-tunable WLEDs .
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高影响因子
SOLID STATE COMMUNICATIONS
·
2017
·
IF 1.554
Jingjing Chen,Yang Zhao,Guanghao Li,Zhiyong Mao,Dajian Wang,Lijian Bie
In this paper, facile synthesis of CaAlSiN 3 :Ce 3+ yellow-emitting phosphors under atmospheric pressure at a moderate temperature and their photoluminescent properties are reported. The prepared CaAlSiN 3 :Ce 3+ phosphors exhibit a broad yellow emission band positioned at 580 nm and covering a bandwidth of 150 nm. The thermal stability of CaAlSiN 3 :Ce 3+ phosphors shows obvious superiority than the commercial YAG: Ce 3+ phosphor, indicating its promising application prospect in power LEDs . In addition, the enhancement of red-light component for CaAlSiN 3 :Ce 3+ phosphor is demonstrated by co-doping Eu 2+ ions. This study offers a facile route to prepare CaAlSiN 3 :Ce 3+ yellow-emitting phosphors, which may be used as a promising candidate for high performance white LEDs .
研究领域:
材料科学
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发光材料
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无机化学
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固态照明
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光电功能材料
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DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2023
·
IF 3.6
Mingsheng Cai,Tianchun Lang,Shuangqiang Fang,Tao Han,Damir Valiev,Houjiang You,Chong Liu,Jing Yu,Peng Su,Xiaolong Jing,Guanghui Ge,Bitao Liu,Elena F. Polisadova
Fluorescent materials are widely used for anti-counterfeiting of information security and commodities. However, the increasing requirements for fluorescent anti-counterfeiting technology urgently require the development of novel fluorescent materials with multicolor fluorescence, single component, and excellent stability. Herein, a color tunable Ba 0·94 Ca 0.06 ScO 2 F: Eu 2+ , Bi 3+ , K + perovskite with dependence of excitation wavelength for high-level anti-counterfeiting is reported. The fluorescence spectra of Ba 0·94 Ca 0.06 ScO 2 F: Eu 2+ , Bi 3+ , K + perovskite show the tunable emission band with the peak between 479 and 509 nm. It is worth noting that the peak intensity ratio at 479 and 509 nm changes with the dependence of the excitation wavelength. Meanwhile, the snowflake pattern is designed to demonstrate the potential applications in anti-counterfeiting, which obviously shows four different color patterns under the sunlight, 320 360, and 415 nm excitation, respectively.
研究领域:
材料科学
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光学材料
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防伪技术
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发光学
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光子学
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DOI
高影响因子
Inorganic Chemistry Frontiers
·
2023
·Vol. 10
·期 6
·1863-1875
·
IF 7
Shengjian Jiao,Ran Pang,Jiutian Wang,Tao Tan,Chengyu Li,Hongjie Zhang
The currently available commercial white light-emitting diodes (WLEDs) suffer from a poor spectral continuity due to the absence of cyan light. Satisfactory bright cyan phosphors are urgently needed to promote the performance of WLEDs. Herein, we report a bright cyan-emitting phosphor Ba6BO3Cl9:Eu2+. The internal quantum efficiency and external quantum efficiency of the Ba6BO3Cl9:Eu2+ phosphor were measured to be 86.2% and 41.3%, respectively. Also, this phosphor exhibits strong endurance to luminescence thermal quenching, with the luminescence intensity at 150 °C retaining 93.9% of the value at room temperature. When applied in full-spectrum phosphor-converted WLEDs, the Ba6BO3Cl9:Eu2+ phosphor may efficiently compensate for the lack of cyan light emission of WLED devices prepared using blue/yellow/red phosphor strategies and also contribute to the improvement of Ra (color rendering index) of WLED devices based on RGB (red/green/blue) phosphor strategies. In addition, the Ba6BO3Cl9:Eu2+ phosphor can be applied as an independent efficient blue-cyan component to replace the blue light component in common WLEDs and reduces the proportion of high-energy blue light that is harmful to vision protection. These results demonstrate that Ba6BO3Cl9:Eu2+ will have a wide range of potential applications in indoor healthy lighting as a cyan phosphor.
研究领域:
材料科学
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光电子学
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固态照明
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荧光粉化学
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发光材料
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DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2019
·
IF 4.029
Yaochun Qiang,Zhifang Pan,Mingzhang Liang,Jianfei Xu,Xinyu Ye,Libin Xia,Weixiong You,Junxiang Fu,Hong Ming
Multilayered inorganic transparent materials have been widely used as laser materials, scintillators and phosphors due to their excellent combined properties or functions. However, owing to the limitation of the current preparation technology, only the ceramics with cubic crystal structure could be fabricated into multilayered transparent materials, which has greatly obstructed the diversity of multilayered transparent materials. Here we report a novel non-cubic multilayered transparent phosphor with a ceramic/glass/ceramic sandwich-like structure prepared by controlling crystallization from Eu 2 O 3 -SrO-Al 2 O 3 -SiO 2 bulk glass. The ceramic thicknesses, total transmittances, emission colors and the fluorescence quantum yields of the samples can be adjusted continuously within a certain range. The multilayered transparent phosphor could be used as a potential candidate for the white LEDs with high color rendering index. It can be anticipated that the controlled crystallization from bulk glass method is a simple, fast, cost-effective and promising synthesis approach to prepare non-cubic transparent materials with ceramic/glass/ceramic structures.
研究领域:
材料科学
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光学材料
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陶瓷
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固态照明
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光致发光
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DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2019
·Vol. 103
·期 3
·1773-1781
·
IF 3.094
Xian Yang,Yu Zhang,Xuejie Zhang,Jian Chen,Haisen Huang,Dongsheng Wang,Xirong Chai,Gening Xie,Maxim S. Molokeev,Haoran Zhang,Yingliang Liu,Bingfu Lei
The red emission with suitable peak wavelength and narrow band is acutely required for high color rendering index (CRI) white LEDs without at the cost of the luminous efficacy. Herein, the Li 2 Ca 2 Mg 2 Si 2 N 6 :Eu 2+ red phosphor was prepared with facile solid-state method using Ca 3 N 2 , Mg 3 N 2 , Si 3 N 4 , Li 3 N, and Eu 2 O 3 as the safety raw materials under atmospheric pressure for the first time, which shows red emission peaking at 638 nm with full width at half maximum (FWHM) of 62 nm under blue light irradiation and becomes the desired red phosphor to realize the balance between luminous efficacy and high CRI in white LEDs. The morphology, structure, luminescence properties, thermal quenching behavior, and chromaticity stability of the Li 2 Ca 2 Mg 2 Si 2 N 6 :Eu 2+ phosphor are investigated in detail. Concentration quenching occurs when the Eu 2+ content exceeds 1.0 mol%, whereas high-temperature photoluminescent measurements show a 32% drop from the room-temperature efficiency at 423 K. In view of the excellent luminescence performances of Li 2 Ca 2 Mg 2 Si 2 N 6 :Eu 2+ phosphor, a white LEDs with CRI of 91 as a proof-of-concept experiment was fabricated by coating the title phosphor with Y 3 Al 5 O 12 :Ce 3+ on a blue LED chip. In addition, the potential application of the title phosphor in plant growth LED device was also demonstrated. All the results indicate that Li 2 Ca 2 Mg 2 Si 2 N 6 :Eu 2+ is a promising red-emitting phosphor for blue LED-based high CRI white LEDs and plant growth lighting sources.
研究领域:
材料科学
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光电子学
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固态照明
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荧光粉化学
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LED技术
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DOI
高影响因子
JOURNAL OF NON-CRYSTALLINE SOLIDS
·
2023
·
IF 3.5
Jiachen Chen,Jin Li,Beining Li,Zhuocheng Chen,Xue Bai,Long Zhang,Jin He
The development of advanced luminescent materials is highly desirable for developing the energy-efficient lighting technology. However, it is still challenging to achieve stable full-color tuning in the same matrix upon a single-beam light excitation so as to ensure the high color stability and consistency. Herein, Eu 3+ /Eu 2+ /Tb 3+ co-doped sintered nanoporous glass via the dipping strategy is fabricated, which can emit blue, green and red emissions simultaneously by simply modifying the thermal treatment temperature. This full-color tuning is attributed to the dual roles of the thermal reduction of Eu 3+ to Eu 2+ in Al 2 O 3 -SiO 2 glass and simultaneous emissions of Eu 3+ /Eu 2+ /Tb 3+ activators. The densification of nanoporous glass via sintering could effectively decrease the amount of hydroxyl groups that present in the glass matrix, resulting in 5 times enhancement of the photoluminescence intensity and longer photoluminescence lifetime of rare earth (RE) ions. The thermal reduction of Eu 3+ to Eu 2+ is due to the reduction environment provided by Al 3+ ions in the Al 2 O 3 -SiO 2 glass. The energy transfer (ET) from Eu 2+ to Tb 3+ , Eu 2+ to Eu 3+ and Tb 3+ to Eu 3+ have been investigated in detail. Based on the ET mechanism, rational PL spectra design was demonstrated by varying the concentration of Eu 3+ ions in solution. The Color Correlated Temperature (CCT) and the Color Rendered Index (CRI) values of the white light emission glass are 7420 K (Cold-white emission) and 80.85, the temperature dependent photoluminescence (TDPL) analysis reflects the white light emission glass possesses high thermal stability and excellent thermal restorability. This facile fabrication and full-color tuning of Eu 3+ /Eu 2+ /Tb 3+ co-doped sintered nanoporous Al 2 O 3 -SiO 2 glass may provide a novel luminescent material for white-light emitting diodes (WLEDs) application.
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高影响因子
JOURNAL OF LUMINESCENCE
·
2023
·
IF 3.6
Reziwanguli Yantake,Aierken Sidike,Palidan Aierken,Taximaiti Yusufu
In the field of luminescent materials, the search for good substrates and the use of a single substrate to excite near-ultraviolet chips to produce white LED devices has always been of great interest. This study utilized energy transfer between Bi 3+ and Eu 3+ to design KAlSiO 4 : 0.02Bi 3+ , 0.04Eu 3+ red emission phosphors with a potassium nepheline structure, which were calcined in air with a high-temperature solid-state method. Under 286 nm excitation, energy transfer between Bi 3+ and Eu 3+ up to 85.9 %. Through DFT theoretical calculations, it was found that the bandgap of the matrix was 4.86 eV, KAlSiO 4 : 0.02Bi 3+ , 0.04Eu 3+ has excellent heat quenching resistance, and the emission intensity at 150 °C is 92.9 % of that seen at room temperature . Second, by doping with Eu 2 O 3 and calcining in a reducing atmosphere, KAlSiO 4 : 0.02Eu 2+ , 0.1Li + broadband blue emitting phosphors were obtained. Finally, KAlSiO 4 : 0.02Bi 3+ , 0.04Eu 3+ was mixed with KAlSiO 4 : 0.02Eu 2+ , 0.1Li + to prepare a near-ultraviolet white LED device. The color rendering index of the device reached 87.1, the color coordinates were (0.3328, 0.3015), and the color temperature was 5422 K. These results proved that KAlSiO 4 : 0.02Bi 3+ , 0.04Eu 3+ samples have potential for use in near-ultraviolet white LEDs and that KAlSiO 4 is a good substrate in the field of luminescence. This work provides a new breakthrough in the use of a single substrate to prepare multiple colored fluorescent powders and mix them together to produce white LED devices.
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高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Xiaoping Jiang,Yue Guo,Lixi Wang,Qitu Zhang
Dynamic photoluminescence and photochromism are two critical technologies applied in advanced anti-counterfeiting and encryption. In this work, an innovative phosphor of CaAl 12 O 19 :Eu 2+/3+ combining the features of dynamic photoluminescence and photochromism is developed for the first time. After being irradiated by a portable 254 nm ultraviolet lamp, the photoluminescent color of the phosphor can dynamically change from red to magenta in dark field, and the surface color can dynamically alter from white to light brown in bright field. Based on these two appealing features, an application in advanced anti-counterfeiting and encryption is designed which can write, encrypt, and erase information successfully, thus guaranteeing information security. Furthermore, a composite material of CaAl 12 O 19 :Eu 2+/3+ /PDMS is fabricated for application in advanced anti-counterfeiting and encryption in both dark and bright fields, which is difficult to be replicated.
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高影响因子
JOURNAL OF RARE EARTHS
·
2022
·
IF 4.632
Haitao Lv,Yanmin Wang,Zhidong Pan,Xiangyu Li,Yehong Zhang
Eu 2+ , Dy 3+ and Zr 4+ ions co-doped strontium aluminate (i.e., SrAl 2 O 4 :Eu 2+ ,Dy 3+ ,Zr 4+ )/molybdate (i.e., Ho 2 MoO 6 or Nd 2 MoO 6 ) with photo-/mechano-luminescence and allochroic effect as multi-optical functional hybrid pigments were prepared via solid state reactions and subsequent mixing. The phosphor and hybrid pigments were characterized by X-ray diffraction, scanning electron microscopy with energy dispersive X-ray spectroscopy, ultraviolet–visible spectroscopy, L∗a∗b∗ color scale analysis, spectrophotometry and mechanoluminescent measurement. The results show that the optimum luminescent emission intensity of SrAl 2 O 4 :Eu 2+ ,Dy 3+ ,Zr 4+ phosphor can be obtained when 5 mol% Zr 4+ ions is doped into the lattice. Under the excitation of 365 nm wavelength, the hybrid pigments prepared with the phosphor and molybdate at a mass ratio of 1:1 present a green broad band emission located at 460–650 nm due to 4f 6 5d 1 →4f 7 transitions of Eu 2+ ions. The hybrid pigments have the superior mechanoluminescent property and emit light after being exerted by mechanical stresses. Besides, the hybrid pigments also exhibit an allochroic effect under different illuminants. In addition, the anti-counterfeiting of the hybrid pigments as a promising application was also presented.
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高影响因子
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