ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Tianyi Duan,Xulong Lv,Lipeng Huang,Huanyi Zhang,Yanjie Liang
Multifunctional phosphors that integrate background-free ultraviolet-C (UVC) persistent luminescence with rewritable optical memory are highly desirable for smart photonic applications. However, achieving such systems remains challenging, as it requires the integration of long-lived carrier storage and reversible photochromic switching within a single defect landscape. Here, we report a single-activator multifunctional phosphor, LiCaBO 3 :Pr 3+ (LCBO:Pr), which couples multi-responsive UVC luminescence with reversible photochromism. Under 248 nm excitation, LCBO:Pr exhibits intense UVC down-shifting emission (276 nm). Remarkably, the same Pr 3+ centers also enable anti-Stokes UVC emission under 450 nm excitation, allowing blue-light-driven UVC output. Beyond X-ray-excited radioluminescence, LCBO:Pr demonstrates efficient energy storage and releases dual-channel UVC/red persistent luminescence (>24 h) after excitation ceases. This process is accompanied by a reversible white-to-brown photochromic transition with a high coloration degree of 61.2%, which can be nearly completely erased by heating or blue-light bleaching, achieving recovery efficiencies of 98.7% and 97.1%, respectively. Experimental analyses and first-principles calculations reveal that defect states associated with V O3 and B i govern both carrier trapping and color-center formation. The coupling of these defect-mediated processes enables integrated optical functionalities within a single material platform, allowing multichannel information writing, readout, and erasure, and offering a versatile platform for solar-blind photonic applications.
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DOI
高影响因子
Photochem
·
2025
·Vol. 5
·期 4
·
IF 2.3
Xiaoman Shi,Huimin Li,Ruiping Deng,Su Zhang,Hongjie Zhang
Long persistent phosphors are widely used in many fields, such as LED, bioimaging, urgent lighting, temperature sensors, etc. Although green and blue long persistent phosphors are well developed, efficient orange-yellow long persistent phosphors are still relatively rare. In this work, a novel orange-yellow long-persistent phosphors Ca2LuScGa2Ge2O12:xPr3+(CLSGGO:xPr3+, x = 0.003, 0.005, 0.01, 0.02, 0.03, 0.04, 0.05) are prepared and systematically investigated through its crystal structural information, photoluminescence, and persistent luminescence properties. Under ultraviolet light excitation, these phosphors exhibit orange-yellow emission stemming from the3P0and1D2multiple electron transitions in the 4f level of Pr3+ion. In addition, the material exhibits bright persistent luminescence. The complex garnet matrix structure of Ca2LuScGa2Ge2O12provides excellent conditions for the formation of traps. Through the testing of thermoluminescence curve and function fitting, the density and depth of traps are studied; also, the storage and release process of carriers in the material are calculated in detail. A reasonable persistent luminescence mechanism is proposed for CLSGGO:0.01Pr3+. This work enriches the research content of photoluminescence and long persistent luminescence of Pr3+-doped garnet-based phosphors and paves the way for the future research of long persistent luminescent materials doped with rare earth ions.
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高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Hang Yang,Dong Tu,Yi Wei,Xinru Huang,Haonan Ju,Wei Wang,Fan Xia,Xiuguo Chen,Guogang Li
Owing to the unique mechano-optical response, mechanoluminescence (ML) materials possess dynamic, sensitive, visual, and recoverable strain sensing capabilities. However, the dilemma of lacking outstanding ML materials with high detection precision under micro deformations still exists, thereby hindering advanced applications in multi-angle and multidimensional scenarios. Herein, a novel Pr 3+ -doped perovskite oxide (NaTaO 3 :Pr 3+ )-based composite elastic thin film is developed, which achieves ultrasensitive ML responses to both microscale compressive and tensile strains. Compared with the record of LiTaO 3 :Tb 3+ , the corresponding deformation detection limit has been improved by five times, reaching 0.01%, which is comparable to the performance of the widely used piezoresistive and capacitive sensors. The results reveal that the ML originates from the interaction between adjacent defects and the varying local piezoelectric fields near Pr Na O 9 and Pr Ta O 6 polyhedra. Most notably, the strain and ML demonstrate identical distributions on a 3D-printed model coated with NaTaO 3 :Pr 3+ thin film even under micro deformation less than 0.4%, highlighting the significant potential of NaTaO 3 :Pr 3+ for advanced 3D microstrain sensing applications. This work provides convincing insights into the investigation of ML mechanisms through local trap and piezoelectricity analyses, along with an exemplificative application in advanced strain sensing and visualization at microscopic and multidimensional scales.
研究领域:
材料科学
·
纳米科技
·
固态物理
·
传感器技术
·
生物医学工程
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DOI
PubMed
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2024
·Vol. 26
·期 46
·28971-28979
·
IF 2.9
Yuhan Fan,Yongze Cao,Meiling Li,Sai Xu,Yichao Wang,Xizhen Zhang,Jinsu Zhang,Baojiu Chen
A series of Tb3+, Pr3+ and Dy3+ monodoped CaTa4O11(CTO) persistent luminescence (PersL) phosphors have been successfully synthesized using the molten salt method with KCl flux. The PersL color is green and orange for Tb3+ and Pr3+ or Dy3+ doped samples, respectively. The trap depth of Tb3+, Pr3+ and Dy3+ monodoped CTO is 0.33, 0.31 and 0.30 eV, respectively. The PersL time of 3 mol% Tb3+, 1 mol% Pr3+ and 1 mol% Dy3+ monodoped samples is 52.20, 35.00 and 59.46 s, respectively. Tb3+, Pr3+ and Dy3+ monodoped CTO phosphors can be used in luminescence displays and anti-counterfeit labels under commercial 254 nm UV light.
研究领域:
材料科学
·
光学
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DOI
PubMed
高影响因子
DALTON TRANSACTIONS
·
2023
·Vol. 52
·期 33
·11649-11657
·
IF 4
Zikai Meng,Zhen Guo,Jiajia Cao,Zihui Li,Jihua Zhu,Zhenbin Wang,Cunhua Ma,Mingjin Zhang,Weisheng Liu
In recent years, a series of persistent luminescence materials excitable by blue light have been developed and widely used in many fields such as optical information storage, AC-LEDs, anti-counterfeiting and bio-imaging. However, it is still a long-standing challenge to develop a superior red-emitting persistent phosphor that can be efficiently excited by blue light. In this work, a novel blue-light excited red-emitting persistent phosphor CaCd2Ga2Ge3O12:Pr3+ was successfully synthesized by using a solid-state method, showing excellent luminescence properties. Moreover, the phase purity, crystal structure, photoluminescence spectra, afterglow emission spectra, and three-dimensional thermoluminescence spectrum were successfully investigated. Under 294 nm excitation, photoluminescence spectra show a single orange emission and a series of peaks centered at 492, 537, 568, 614 and 664 nm, which correspond to the 3P0 → 3H4, 3P0 → 3H5, 3P2 → 3H6, 1D2 → 3H4, and 3P0 → 3F2 transitions of Pr3+, respectively. Interestingly, after blue light excitation, the afterglow luminescence exhibits red long emission, which is attributed to the 1D2 → 3H4 transition of Pr3+. Through thermoluminescence spectra and three-dimensional thermoluminescence spectra, we analyze the reasons for the different colors of photoluminescence and afterglow luminescence. The results imply that there are two types of traps, and the depth of shallow traps and deep traps is calculated to be 0.684 and 0.776 eV, respectively. It is worth noting that the photoluminescence is attributed to the 4f2 → 4f5d and f → f transitions of Pr3+, and the afterglow luminescence is ascribed to a tunneling-related process and the transition of electrons from the valence band to the conduction band. The obtained red-emitting persistent phosphors provide a promising pathway toward AC-LEDs, multi-cycle bio-imaging and other fields.
研究领域:
材料科学
·
光学材料
·
发光学
·
磷光体
·
固态化学
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DOI
高影响因子
Advanced Optical Materials
·
2024
·Vol. 12
·期 34
·2401688
·
IF 8
Yuqi Chen,Fangyi Zhao,Kangrui Qiang,Qinan Mao,Heyi Yang,Yiwen Zhu,Meijiao Liu,Jiasong Zhong
Phosphors with multifunctional applications have attracted extensive research, especially in thermometer and anti-counterfeiting fields. Herein, a series of Pr 3+ -doped YNbO 4 (YNO) phosphors with adjustable photoluminescence and red persistent luminescence (PersL) performances are developed. YNO host exhibits the blue self-activated luminescence, and the different Pr 3+ emission peaks possess various thermal stability properties due to the thermal quenching channel generated by the intervalence charge transfer state between Pr 3+ and Nb 5+ ions. Two kinds of fluorescence intensity ratio models with high absolute and relative sensitivities are realized to measure the temperature under dual-wavelength excitation. Moreover, YNO:Pr 3+ exhibits the red PersL with a duration of about 120 s upon ceasing the UV excitation light source. The fabricated YNO:Pr 3+ -polydimethylsiloxane films display different luminescence patterns with the passage of time after turning off UV light, which can cleverly achieve dynamic conversion. These results demonstrate that YNO:Pr 3+ phosphor has potential applications in dual-wavelength excited thermometry and dynamic anti-counterfeiting fields.
研究领域:
材料科学
·
光学传感
·
防伪技术
·
发光材料
·
测温技术
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2012
·
IF 3.898
Zhengqing Liu,Shaopu Liu,Xiaodan Wang,Pingping Li,Youqiu He
We have developed a novel biosensor for the rapid determination of double-strand (ds) DNA based on the photoinduced electron transfer (PET) from glutathione (GSH) capped CdTe quantum dots (QDs) to praseodymium(III)–rutin (Pr 3+ –rutin) complex. The biosensor was based on a fluorescence “OFF–ON” mode. To provide the platform for dsDNA detection, the Pr 3+ –rutin complex was first employed as an effective fluorescence quencher to QDs through PET. Because of its strong binding affinity with Pr 3+ –rutin complex, dsDNA can break up the low fluoresced ionic ensemble, set free the luminescent QDs. Thus, the recognition of dsDNA by Pr 3+ –rutin complex can be realized through the restoration of QDs fluorescence. The relative recovered fluorescence intensity is directly proportional to the concentration of herring sperm (hs) DNA between 0.0874 μg mL −1 and 20 μg mL −1 , and the detection limit (3 δ / K ) is 0.0262 μg mL −1 . The entire experimental process does not require any chemical modification and coupling of CdTe QDs and dsDNA, greatly simplifying the experimental process. Some possible reaction mechanisms are discussed.
研究领域:
生物化学
·
分析化学
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DOI
高影响因子
ACS Applied Nano Materials
·
2022
·
IF 6.14
Honge Wu,Guang Tao Fei,Jiangang Gao,Jianyong Huang,Li De Zhang
White light-emitting diodes (W-LEDs) are an important solid-state lighting source, thanks to their superior properties. Here, a single-phase phosphor composed of organic–inorganic hybrid nanoparticles having a potential application in W-LEDs is successfully prepared. Green facile hydrothermal synthesis is used to obtain the phosphor integrated LaF3:Pr3+ with inexpensive sodium dodecyl benzene sulfonate (SDBS). It emits bright white light excited by ultraviolet (UV, λ = 365 nm) light. Moreover, its color coordinates and temperature are (0.365, 0.412) and 4606 K, respectively, according to the Commission Internationale de L’Eclairage (CIE). Meanwhile, phosphor shows good thermal stability and long photoluminescence decay time. Therefore, it would be a potential material for warm-white lighting.
研究领域:
材料科学
·
光学工程
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DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2020
·
IF 4.019
Enming Zhao,Xiaodan Liu,Dongyang Tang,Lu Liu,Guangyu Liu,Bao Zhou,Chuanxi Xing
To date, the white light lanthanide upconvertion consisting of RGB components usually originated from more than one type of emitter. Alternatively, Pr 3+ is a fascinating lanthanide ion featuring multiple visible emission bands, including RGB components that in principle enable Pr 3+ to emit white light. In this paper, we report, for the first time to our knowledge, white light upconversion through dual sensitization routes in Nd/Yb/Pr triply doped NaYF 4 microrods upon 800 nm excitation. It is found that the dual sensitization is more efficient than single sensitization for Pr 3+ upconversion. In addition, the temperature sensing behaviors of the proposed triply doped microrods are comparatively investigated using different emission bands. This work presents a novel white light emitting material upon 800 nm excitation, and further demonstrates the feasibility of multichannel thermometry using the proposed material.
研究领域:
材料科学
·
光学
·
纳米技术
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2016
·
IF 3.014
Guang-Xin Xiang,Guo-Jun Wang,Zhi-Jun Zhang,He Feng,Jing-Tai Zhao,Jiao Wang,Xin-Yuan Sun,Ri-Hua Mao,Yong Wang
The uniform 1D nano-rods of RE 3+ doped Ln 7 O 6 F 9 ( Ln = Y and Lu; RE = Pr, Sm and Eu) were synthesized through a facile two-step hydrothermal method without extra fluorine source followed by post-heat treatment. The phase formation, morphologies, as well as photoluminescence properties of the materials were investigated. The precursor composition was determined to be Ln (OH) 1.69 F 1.31 using the Fourier transform infrared spectrum (FT-IR), thermal gravimetric and differential scanning calorimetry (TG-DSC). The average lengths of Y 7 O 6 F 9 and Lu 7 O 6 F 9 were about 6.8 and 7.9 μm, respectively, with the average width of about 650 nm. It was interesting that the tip of the nano-rods exhibits a straight line and divergent umbrella shaped bifurcation for Y 7 O 6 F 9 and Lu 7 O 6 F 9 , respectively. Upon ultraviolet excitation, Pr 3+ , Sm 3+ and Eu 3+ ions in Ln 7 O 6 F 9 showed blue, orange and red emissions originating from their characteristic f-f transitions. In addition, the 4 f 1 5 d 1 → 4 f 2 band emissions (340–450 nm) as well as typical 4 f 2 → 4 f 2 line emissions (450–700 nm) of Pr 3+ were observed in Pr 3+ -doped Ln 7 O 6 F 9 . For Sm 3+ -doped Ln 7 O 6 F 9 , only the typical f - f transitions of Sm 3+ were observed with the absence of charge transfer (CT) band. However, the broad excitation bands at 255 nm attributing to the charge transfer transition of Eu 3+ (i.e. O 2− → Eu 3+ CT) were observed in Eu 3+ -doped Ln 7 O 6 F 9 .
研究领域:
材料科学
·
纳米技术
·
光学
·
化学
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产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 40
·13725-13732
·
IF 6.4
Jian Zhang,Xin You,Ting Wang,Yiyu Cai,Chao Wang,Xin Li,Zhichao Liu,Heng Dai,Alexey Nikolaevich Yakovlev,Xuhui Xu,Jie Yu
Multi-mode luminescent materials refer to materials that can emit light at different wavelengths or colors depending on the applied stimulus, which could provide enhanced security features and make it more difficult for counterfeiters to reproduce. Here, we report the achievement of multi-color dynamic anti-counterfeiting by using multi-mode luminescence material Ca3Ti2O7:Pr3+,Er3+ as the luminescent inks. Ca3Ti2O7:Pr3+,Er3+ exhibits quintuple modes of photoluminescence (PL), long persistent luminescence (LPL), photo-stimulated luminescence (PSL), mechano-luminescence (ML), and up-conversion luminescence (UCL) with rich emission colors. The PL color of the phosphors could be modulated from red to yellow-green when the pump wavelength changes from 254 to 365 nm. Moreover, the tunable color of the phosphors is modulated from yellow to green by prolonging the irradiation time of a 980 nm laser (0.6 W), which is attributed to the elaborate cooperation of the PSL and UCL behaviors. Finally, the anti-counterfeiting trademark based on Ca3Ti2O7:Pr3+, Ca3Ti2O7:Er3+ and Ca3Ti2O7:Pr3+,Er3+ with attractive performance is designed for advanced anti-counterfeiting technology with exceptional security.
研究领域:
材料科学
·
光学材料
·
光子学
·
防伪技术
·
发光材料
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DOI
高影响因子
IEEE PHOTONICS TECHNOLOGY LETTERS
·
2015
·Vol. 27
·期 22
·2379-2382
·
IF 2.11
Duanduan Wu,Zhiping Cai,Yile Zhong,Jian Peng,Jian Weng,Zhengqian Luo,Nan Chen,Huiying Xu
Passive Q-switching of praseodymium (Pr
3+
)-doped fiber lasers at 635 nm with topological insulators (TIs) saturable absorbers (SAs) was experimentally demonstrated for the first time. TIs (Bi
2
Se
3
, Bi
2
Te
3
) nanosheets were embedded in polyvinyl alcohol for film-forming and incorporated into a visible Pr
3+
-doped fiber laser cavity for Q-switching operation, respectively. The Bi2Se3-based Q-switched fiber laser has a wide range pulse-repetition-rate from 191.6 to 454.5 kHz, and the Bi2Te3 one can be continuously tuned from 164.5 to 403.2 kHz. Both the Q-switching lasers have narrow pulse duration of nanosecond (ns)-level. Our results reveal that the TIs-based SAs are available for pulsed operation in the visible spectral range.
研究领域:
光学工程
·
激光技术
·
材料科学
·
纳米技术
·
量子电子学
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DOI
高影响因子
危险品化学品经营许可证（带存储）