Electronic Materials Letters
·
2025
·
IF 2.6
Zhang Ligang,Xu Xiaoming,Ma Lihong,Wang Haosen
A series of Er 3+ /Eu 2+ -activated SrS/SrZnSO with different Er 3+ /Eu 2+ concentrations were synthesized at 1300℃ for 3 h through high temperature solid-state reaction, and their persistence luminescence and mechanoluminescence properties were studied. Upon 450 nm laser excitation, SrS/SrZnSO:Er 3+ /Eu 2+ emitted orange-red light, which could be observed with the naked eyes. When the laser was removed, it showed long afterglow orange-red luminescence. The brightness and duration of the long afterglow increase with the increase concentration of Er 3+ /Eu 2+ from x:y = 0.5%:1% to 3%:1%. SrS/SrZnSO:Er 3+ /Eu 2+ was confirmed as an excellent persistent luminescence material since it could continuously emit light for nearly 10 min. Moreover, under pressure stimulation SrS/SrZnSO:Er 3+ /Eu 2+ showed a novel type of mechanoluminescence (ML) with the emitting bright green light which linearly depended on the force. Under the same force of friction, the sample SrS/SrZnSO:Er 3+ /Eu 2+ with Er 3+ /Eu 3 = 1%:0% emitted the strongest ML among prepared samples. Furthermore, the mechanism of mechanoluminescence was studied in details. This study can expand the family of ML materials while promoting the applications of mechanoluminescence materials in damage diagnosis, human-machine interfaces, and pressure sensing. Graphical
研究领域:
材料科学
·
光学
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DOI
高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2025
·Vol. 131
·期 6
·1-11
·
IF 2.8
Wang Qun,Bu Ranran,Xu Changyuan,Zhao Fengjiao,Yin Hongming
Tellurite glass samples doped with Er 3+ and Eu 3+ were synthesized by the high-temperature solid phase method. The XRD diffraction pattern shows the amorphous properties of the prepared samples. The luminescence properties of glass samples were analyzed using the absorption spectrum, excitation spectrum, and emission spectrum. The energy transfer mechanism between Er 3+ ions and Eu 3+ ions was studied by changing the concentration of Eu 3+ ions, and the results were verified by measuring the luminescence decay lifetime. It is worth noting that at 380 nm excitation, Er 3+ and Eu 3+ co-doped tellurite glass exhibits remarkable tunable luminescence characteristics: by adjusting the concentration of Eu 3+ ions, the emission color can be flexibly adjusted from green to orangish-red. In addition, by effectively combining the prepared co-doped glass sample with the 380 nm GaN chip, the cold white light emission with CIE coordinates of (0.324, 0.320) was successfully achieved. According to the variable-temperature spectroscopy, at 210℃, the emission peak intensities of the co-doped Er 3+ /Eu 3+ tellurite glass at 547 nm and 613 nm are above 70% of the room-temperature luminescence intensity, demonstrating excellent thermal stability. Graphical
研究领域:
材料科学
·
光学
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Peng Wang,Shiqi Zhong,Ying Wang,Liyao Zou,Fangyuan Yu,Cong Lin,Mei Lin,Min Gao,Chunlin Zhao,Xiao Wu,Chao Chen
The pursuit of high-performance piezo-photocatalysts through structural modifications has been a focal point of investigation within the realm of related scientific disciplines. In this study, we successfully designed Er-doped Bi 0.5 Na 0.5 TiO 3 –BaTiO 3 combined with rare earth ion doping and solid solution modification, and the prepared particles exhibited homogeneous grain sizes and optimized concentrations of oxygen vacancies ( O V ). The synergistic incorporation of O V (accelerator for catalytic reaction) and Er 3+ results in an impressive 12-fold enhancement of the piezo-photocatalytic rate when degrading the Rhodamine B dye. The optimal composition 0.96BNT-0.04BT-Er demonstrates outstanding electrochemical properties , including a superior photocurrent response and minimal impedance, highlighting its exceptional performance in piezo-photocatalysis. The fundamental enhancement in catalytic performance can be attributed to the reconfiguration of the band structure of 0.96BNT-0.04BT-Er, which has been meticulously calculated utilizing DRS and VB-XPS and the internal mechanism was explained in detail. This research serves as a source of inspiration for the investigation of solid solutions among piezo-photocatalysts and sheds light on the vital role of band structure in governing catalytic performance.
研究领域:
材料科学
·
催化化学
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DOI
高影响因子
Inorganic Chemistry Frontiers
·
2024
·Vol. 11
·期 15
·4721-4730
·
IF 6.1
Sixia Li,Peng Zhang,Zhenbing Wang,Yuzhu Yang,Xuan Miao,Weisheng Liu
Multicolor and multimodal luminescence materials play crucial roles in anti-counterfeiting and encryption technologies due to their attractive properties of colorful, visually identifiable emissions and distinct emission modes in various excitation or stimulus channels. Nevertheless, integrating multicolor and multimodal luminescence via single rare-earth doping based on a single matrix remains a significant challenge. Herein, the Er3+ single-doped NaGdTi1.8Al0.2O6 double perovskite material achieves multicolor luminescence, afterglow, and upconversion emission by responding to several types of excitation ranging from UV to NIR and thermal disturbance. Spectral analysis has revealed that the varying excitation efficiency of the two luminescence centers at various excitation wavelengths leads to a shift in the overall emission color from red to green as the excitation wavelength transitions from 250 nm to 390 nm. Additionally, the energy transfer process between defect levels and Er3+ leads to multicolor luminescence from green to orange within a temperature range of 217 K to 417 K. These findings offer a facile and unique strategy for designing highly integrated multicolor and multimodal luminescence in a single matrix and promise applications in advanced anti-counterfeiting and information encryption technology.
研究领域:
材料科学
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光学
·
防伪技术
✓ 已验证
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Yun He,Zexiong Wang,Ruoshan Lei,Shilong Zhao,Shiqing Xu
Although rare-earth (RE 3+ )-doped negative thermal expansion (NTE) luminescent materials exhibit promising anti-thermal quenching effects, limited progress has been made in modifying their NTE and luminescence performances. This study investigates the impacts of Mo 6+ ion stoichiometry on the crystal structure, NTE behavior, and photoluminescence (PL) thermal response characteristics in Er 3+ , Yb 3+ co-doped Sc 2 Mo 3(1+x) O 12 phosphors (−0.1 ≤ x ≤ 0.1). The results reveal that augmenting the Mo 6+ content results in a transition from three-dimensional to two-dimensional NTE behavior in the host material due to the change in steric hindrance. This transition modulates cross-relaxation and back energy transfer processes between the doped Er 3+ and Yb 3+ ions. Consequently, the thermal enhancement factor for the upconversion luminescence of Er 3+ ions decreases with increasing Mo 6+ content, whereas the factor for near-infrared downshifting luminescence increases. Additionally, using the luminescence intensity ratio between the 1550 nm emission of Er 3+ and the 1050 nm emission of Yb 3+ for temperature sensing, a maximum relative sensitivity of 3.97 % K −1 is achieved in Sc 2 Mo 3.21 O 12 : Er 3+ , Yb 3+ . These findings provide insights into the synchronous regulation of the NTE and luminescence properties of RE 3+ -doped NTE phosphors for versatile applications.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2015
·
IF 2.605
Yurun Ma,Pingsun Qiu,Dongfang Xu,Jinrong Lin,Yanxue Tang,Feifei Wang,Xiyun He,Ziyao Zhou,Nianxiang Sun,Xinyang Zhang,Yi Zhou,Dazhi Sun
NaYF 4 nanorods , and nanoparticles co-doping with Yb 3+ and Er 3+ were synthesized by hydrothermal method . The effects of doped ion concentration, the ratio of NaF to Ln (NO 3 ) 3 and the reactant content on the luminescence properties of the nanocrystals were investigated in detail in this paper. The materials were characterized by powder X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and photoluminescence (PL) spectra. The results indicate that a doping level of 20 mol% Yb 3+ and 2 mol% Er 3+ gives the strongest luminescence, and concentration quenching occurs, when Er 3+ concentration exceeds 5 mol%. Besides, the reaction of temperature and time were also investigated and the results showed that they have an effect on the shape, size, and crystal phase purity of the nanoparticles . The luminescence mechanism for the NaYF 4 :Yb 3+ , Er 3+ was discussed. Under 980 nm excitation, the Er 3+ ions doped into NaYF 4 samples emitted green fluorescence 520 nm ( 4 H 11/2 → 4 H 15/2 ), 550 nm ( 4 S 3/2 → 4 H 15/2 ) and red fluorescence 650 nm( 4 F 9/2 → 4 I 15/2 ), which were modified and enhanced by Yb 3+ ions.
研究领域:
材料科学
·
光学
✓ 已验证
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DOI
高影响因子
OPTICAL MATERIALS
·
2024
·
IF 3.8
Hui Wang,Hui Hu,Kevin Homewood,Yun Gao
Double perovskites have shown great potential in addressing the toxicity and instability concerns of lead halide perovskites for practical applications. However, the fabrication of high-quality double perovskite single crystals has remained challenging. Here, large Er-doped Cs 2 AgBiCl 6 single crystals (SCs) with a maximum dimension of 8 mm were successfully prepared using a solution temperature-lowering (STL) method. The photoluminescence (PL) spectra were excited by the lasers with energies below and above the band gap, and the origin of the abnormal PL peaks changing with temperature is explored. The photodetector made from the Er-doped Cs 2 AgBiCl 6 SCs shows a significantly enhanced light responsivity and detectivity in the wavelength range from 370 nm to 660 nm compared with the undoped one, with excellent environmental and radiation stability. It reveals that the Er ions can be successfully doped into double perovskite single crystal, benefiting the application to optoelectronic devices.
研究领域:
材料科学
·
光学工程
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DOI
高影响因子
ACS Omega
·
2023
·
IF 4.1
Haoyue Hao,MengYao Zhu,Liang Li
In this paper, Er3+/Yb3+ codoped Y2(1–x%)Lu2x %O3 solid solution was prepared through the sol–gel method, and the substitution of Y3+ by Lu3+ ions in Y2O3 was confirmed by X-ray diffraction data. The up-conversion emissions of samples under 980 nm excitation and the relative up-conversion processes are investigated. The emission shapes do not vary with the change in doping concentration due to the unaltered cubic phase. The red-to-green ratio changes from 2.7 to 7.8 and then declines to 4.4 as the doping concentration of Lu3+ increases from 0 to 100. The emission lifetimes of green and red have similar variation: the emission lifetime decreases with doping concentration changing from 0 to 60 and rises as the doping concentration continues to increase. The reason why the emission ratio and lifetime change could be originated to the exacerbation of cross-relaxing process and the change of radiative transition probabilities. The temperature-dependent fluorescence intensity ratio (FIR) shows that all samples can be used in noncontact optical temperature sensing, and the method of local structure distortion can be used to improve sensitivity further. The max sensing sensitivities of FIR based on R538/563 and Rred/green reach 0.011 K–1 (483 K) and 0.21 K–1 (300 K). The results display that Er3+/Yb3+ codoped Y2(1–x %)Lu2x %O3 solid solution can be potential candidates for optical temperature sensing in different temperature ranges.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 95
·77673-77681
·
IF 3.84
Lizhen Sun,Jianfu Pan,Xiaobin Zhang,Heng Wang,Lingyun Li,Yan Yu
YOF: Yb3+, Er3+ powders with rhombohedral phase were successfully synthesized by using a modified sol–gel method with calcinating under a temperature range between 400 °C and 600 °C. A systematic study on the temperature-dependent morphology and spectroscopic properties of rhombohedral YOF: Yb3+, Er3+ powders have been performed. The YOF: Yb3+, Er3+ powders that prepared at 400 °C and 500 °C exhibit a plate growth habit, while the powder that prepared at 600 °C shows a sintering property. When excited by 980 nm laser beam, all of the rhombohedral YOF: Yb3+, Er3+ powders show efficient red light emission with light wavelength ranging from 630 nm to 700 nm. The upconversion mechanism and luminescence decay properties were discussed in detail.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Physical Chemistry C
·
2022
·
IF 4.177
Yunfeng Bai,Yan Yang,Yawen Deng,Suihu Dang,Zelong He,Ziwen Zhou,Lu Liu
Rare-earth-ion-doped nanocrystals have low quantum conversion efficiency due to their high surface-to-volume ratios and many surface defects, which induce fluorescence quenching. We propose a laser annealing strategy that uses a 974.5 nm laser with a high power density to heat Er3+-doped Y2O3 nanocrystals for several seconds. As a result, the upconversion of Er3+-doped Y2O3 nanocrystals is enhanced obviously after laser annealing: the green emission is enhanced by 90 times and red emission by 24 times. The main reason for the upconversion enhancement is the ultrahigh temperature caused by laser annealing, which increases the grain size and reduces the surface defects. It is an encouraging result, and laser annealing is suitable for various rare-earth-ion-doped oxide nanoparticles. Then, the strong upconversion is applied to measure temperature. After laser annealing, the highly improved fluorescence efficiency decreases the required excitation power density. The thermal effect of excitation light is negligible when the excitation power density is less than 0.13 W/mm2. The thermally coupled levels of I538/I563 and nonthermally coupled levels of I661/I800 are studied for thermometry. The experimental results show that I661/I800 has high absolute sensitivity than I538/I563 at a temperature below 400 K. Rate equations and multiphonon transitions are applied to explain the relationship between the nonthermally coupled fluorescence intensity ratio and temperature. It is instructive for the design of new temperature sensors.
研究领域:
材料科学
·
光学
✓ 已验证
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DOI
高影响因子
OPTIK
·
2022
·
IF 2.84
Ying Chen,Xuegang Zheng,Haobo Lin,Meijuan Liu,Shusheng Pan,Zhiyu Liu,Tong Liu,Dekang Xu,Hao Lin
In the work, a range of Er 3+ -sensitized NaYF 4 upconversion (UC) particles doped with Tm 3+ and Ho 3+ are successfully prepared by hydrothermal process. The UC crystals appear two green emission peaks at 529 and 541 nm and a remarkable red emission peak at 655 nm under 980 and 1532 nm irradiations. Here, Tm 3+ and Ho 3+ serve as trapping centers, which confine the excitation energy efficiently to promote the red UC emission and improve the red to green ratio. UC mechanisms in the Er 3+ /Tm 3+ co-doped and Er 3+ /Ho 3+ co-doped NaYF 4 crystals are discussed at length based on the UC luminescence spectroscopy. Unlike the traditional sensitization with high Er 3+ concentration doping to obtain red light, the red UC luminescence is acquired by low Er 3+ concentration doping, which can effectively avoid concentration quenching caused by high Er 3+ concentration doping. Furthermore, NaYF 4 :Er 3+ , Tm 3+ crystals exhibit stronger red UC emission compared with NaYF 4 :Er 3+ , Ho 3+ counterparts. Er 3+ -sensitized NaYF 4 crystals doped with Tm 3+ and Ho 3+ ions generate pure red light more efficaciously under 1532 nm excitation than under 980 nm excitation. The phosphors emitting brilliant red UC emission have the potential applications in solid state lasers and biological imaging.
研究领域:
材料科学
·
光学
✓ 已验证
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DOI
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 15
·2153
·
IF 5.3
Hao Cui,Daguang Li,Yu Yang,Yuewu Fu,Yanhui Dong,Jing Yin,Weiping Qin,Zhixu Jia,Dan Zhao
Polymer-based waveguide amplifiers are essential components in integrated optical systems, as their gain bandwidths directly determine the operating wavelength of optical circuits. However, development of the wideband gain media has been challenging, making it difficult to fabricate devices with broadband amplification capability. Rare earth ion-doped nanoparticles (NPs) are a key component in the gain media, and their full width at half maximum (FWHM) of the emission peak decides the final gain bandwidth of the gain media. Here, KMnF3: Yb, Er, Ce@KMnF3: Yb NPs with the broad full width at half maximum (FWHM) of the emission peak covering the S+C band was prepared. The NPs were synthesized using a hydrothermal method, and the FWHM of the emission peak of NPs reached 76 nm under the excitation of a 980 nm laser. The introduction of Ce3+ions and a core-shell structure coating greatly enhanced the emission intensity of NPs at C band. Since KMnF3: Yb, Er, Ce@KMnF3: Yb NPs have exceptional broadband luminescence properties at C band, KMnF3: Yb, Er, Ce@KMnF3: Yb NPs can be the potential gain medium in the future polymer-based waveguide amplifiers.Keywords:KMnF3;nanoparticles;active-shell;core-shell;1.5 μm
研究领域:
材料科学
·
光学工程
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DOI
PubMed
高影响因子
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