JOURNAL OF LUMINESCENCE
·
2019
·
IF 2.961
Xiangyu Wang,Xiaojun Tan,Shoulei Xu,Fenhong Liu,Bernard A. Goodman,Wen Deng
High-quality yttria-stabilized zirconia (YSZ) single crystals doped with different concentrations of Er 2 O 3 were grown by the optical floating zone method . The cubic phase of ZrO 2 was retained when Er 3+ partially replaced Y 3+ in the YSZ matrix. Up-conversion luminescence was observed when the crystals were excited by a 980 nm laser diode . The optical power curve was obtained by plotting the up-conversion luminescence intensity against the laser power, and both the green and red light up-conversion were shown to involve two photons. Seven characteristic visible and three infrared absorption peaks were observed in the absorption spectrum of the 1.50 mol% Er 2 O 3 : YSZ. The up-conversion spectra produced three prominent peaks at 547(green), 561 (green) and 679 (red) nm. Green and red light maxima were observed with Er 2 O 3 concentrations of 1.5 mol% and 0.5 mol%, respectively. Oscillator strength parameters Ω t (t = 2, 4, 6) were determined using the Judd-Ofelt theory and Ω 2 = 9.90 × 10 −20 cm 2 , Ω 4 = 2.92 × 10 −20 cm 2 , Ω 6 = 3.32 × 10 −20 cm 2 . The Ω 4 /Ω 6 ratio (0.88), which is the key parameter for laser performance of reactive matrix materials , indicates that Er 3+ -doped YSZ has potential laser applications.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
Minerals
·
2025
·Vol. 15
·期 2
·153
·
IF 2.2
Kejia Ning,Jingzheng Wang,Li Zhang,Mengting Hong,Biao Fu,Jiushuai Deng,Xiahui Gui,Yaowen Xing,Guixia Fan,Hongxiang Xu
This systematic study was conducted on the separation of yttrium (Y) and erbium (Er) from a chloride medium using a mixed extractant system composed of [N1444][P507] and TRPO (trialkylphosphine oxide) in kerosene. This investigation focused on the effects of various extractants, extraction systems, the initial acidity of the aqueous phase, and the phase contact time on the extraction efficiencies of Y and Er. This study showed that using the combination of [N1444][P507] and TRPO notably increased the extraction performance and enhanced the separation factor between Y and Er, outperforming the individual use of P507 or [N1444][P507] under identical conditions. The extraction efficiencies for Y and Er reached 88.4% and 93.3%, respectively, with a separation factor (Er/Y) of 1.84, highlighting the system’s effectiveness in selectively isolating rare earth elements. Optimal stripping conditions were obtained using 0.1 mol/L of HCl, resulting in a successful recovery of 93.1% of Y3+and 78.9% of Er3+from the organic phase. The extraction mechanism involved both ion exchange and ion association. The enthalpy changes (ΔH) associated with the extraction of Y3+(−2.5 kJ·mol−1) and Er3+(4.6 KJ·mol−1) demonstrate that the extraction processes are exothermic, reflecting the thermodynamic differences between the two ions.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2019
·
IF 2.961
Qianru Zhao,Jiang Zhao,Min Tao,Cheng Wang,Xueqin Zeng,Yongmin Hu,Shengfu Wang,Minghua Zeng,Wei Zhou,Haoshuang Gu,Yuebin Li
The lanthanide doped NaYF 4 , one of the most efficient upconverting materials, which shows great potential in the applications of future optoelectronic devices. Although there are many progress on the synthesis and performance modulations of upconversion fluorescence single crystal and nanoparticles , it is still a great challenge to fabricate upconverting thin film to compatible with modern planar silicon photoelectronic devices. In this work, patterned NaYF 4 : Yb 3+ , Er 3+ thin films were prepared by a well-designed strategy combined with photolithography and electrodeposition at 50 °C. The thickness of NaYF 4 : Yb 3+ , Er 3+ thin films could be modulated from 1.6 ± 0.3 to 6.1 ± 0.4 μm by the deposition time. After the further annealing at 300 °C, the NaYF 4 : Yb 3+ , Er 3+ thin films present efficient green upconversion fluorescence with fine spectra from 510 to 720 nm, which resulted from the electronic transitions of doped Er 3+ ions . The application of laser direct-writing mask could introduce the desired micropattern of NaYF 4 : Yb 3+ , Er 3+ thin films, which show uniform distributed green upconversion fluorescence pixel with fine resolution of about 50 μm. The intense upconversion luminescence pattern with high spatial resolution show great application potential in the fields of displays, photodetectors , biological sensors, solar energy converter and commercial anticounterfeiting.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2024
·
IF 4
Junshan Hu,Yongqiang Li,Yuxiang Wu,Bin Duan,Keyu Guo,Fengyi Wang,Tong Liu,Wei Jin,Changchun Ding
Herein, a strong red upconversion phosphor of Yb 3+ /Er 3+ co-doped Sc 6 WO 12 was prepared by employing an equivalent substitution approach. When irradiated by 980 nm near-infrared laser, the phosphor emits strong 660 nm red light. The main excitation mechanism for its red upconversion luminescence emission is the energy transfer process, through which the Er 3+ ions is promoted from the 4 I 13/2 energy level to the 4 F 9/2 energy level. In addition, it is noteworthy that the multimode upconversion luminescence phosphor exhibits three different trends upon temperature change, and its upconversion emission integral intensity ratio exhibits a linear relationship with temperature in the range of 298 K–623 K. This special property makes the phosphor promising for applications in optical temperature measurement.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
SURFACE AND INTERFACE ANALYSIS
·
2022
·Vol. 55
·期 4
·288-295
·
IF 1.702
Yanan Huo,Jingxiang Zhou,Zushun Xu,Tianyou Chen,Haonan Ji,Fanbao Zeng,Yun Wang,Xiaoxi Hu
Photochromic coatings have been widely used in many fields such as architecture, transportation, and military because of the combination of reversible color-changing properties with the insulation and protection of substrates. Conventionally, organic photochromic components are used for the preparation of photochromic coatings with fast photo-response and excellent fatigue resistance, but the preparation of these coatings is costly and time-consuming. Here, we have developed a relatively simple and cost-effective strategy for the preparation of water-based photochromic polyurethane coatings. Er(III)-doped WO 3 was synthesized and used as the photochromic component for the preparation of polyurethane/Er(III)-doped WO 3 composites, which were further used for the preparation of photochromic coatings. The properties of the coatings were tested and characterized. Due to their excellent thermal stability, water resistance, fatigue resistance, and photochromism, these coatings might have practical applications in various areas.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
OPTICAL MATERIALS
·
2023
·
IF 3.9
Qijing Zheng,Chunyan Guan,Zhenghuan Wan,Ru Fu,Jinyu Yang
Pure phase orthorhombic Er 3+ and Yb 3+ co-doped La 14 W 8 O 45 up-conversion luminescent materials were successfully prepared by the hydrothermal method combined with calcination treatment. The structures, morphology, and optical properties of the samples were analyzed by X-ray powder diffractometer (XRD), scanning electron microscope (SEM), ultraviolet–visible diffuse reflectance spectroscopy (UV–Vis DRS), and up-conversion photoluminescence spectroscopy (UPL) with a 980 nm laser. XRD results indicated that the obtained samples are single-phase orthorhombic Er 3+ and Yb 3+ co-doped La 14 W 8 O 45 crystals. SEM results showed that the prepared sample exhibits an irregular and melted polyhedral-like morphology with agglomeration in submicron size of particles approximately 50–200 nm. UV–vis DRS results revealed that the La 14 W 8 O 45 crystal is a direct semiconductor with an optical band gap of 3.84 eV. The prepared Er 3+ and Yb 3+ co-doped La 14 W 8 O 45 crystals exhibit strong up-conversion emission peaks at about 526 nm, 548 nm, and 660 nm under 980 nm laser excitation. The intensity of up-conversion luminescence is affected by the Er 3+ doping concentration, and concentration quenching will be observed due to the cross-relaxation (CR) process when the Er 3+ doping content is above 1%. The pumping power dependence of the luminescence indicated that the up-conversion emissions of samples are excited by a two-photon absorption process. The color coordinates of the samples are located in the green light region.
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 MATERIALS SCIENCE & TECHNOLOGY
·
2023
·
IF 10.9
Limin Wu,Zeyu Cheng,Shoulei Xu,Wenxia Wu,Yazhao Wang,Huiting Zhang,Zhonghua Zhu,Ninghan Zeng,Bernard Albert Goodman,Wen Deng
High quality optical single crystals of cubic Yb 2.96 Er 0.04 Al 5 O 12 and Y 2.96 Er 0.04 Al 5 O 12 were successfully prepared using the OFZ method. The 980 nm photon absorption intensity by Yb 2.96 Er 0.04 Al 5 O 12 crystal is much larger than that in Y 2.96 Er 0.04 Al 5 O 12 crystal, the transmission of Yb 2.96 Er 0.04 Al 5 O 12 crystal is lower than that of Y 2.96 Er 0.04 Al 5 O 12 crystal, because the density of Yb 2.96 Er 0.04 Al 5 O 12 single crystal (6.604 g/cm 3 ) is larger than that of Y 2.96 Er 0.04 Al 5 O 12 single crystal (4.529 g/cm 3 ). The up-conversion luminescence spectra of the crystals excited by 980 nm laser show several distinct groups of emission peaks at ∼544 and ∼556 nm, as well as ∼650 and ∼667 nm. The peak intensities of the up-conversion luminescence spectrum for the Yb 2.96 Er 0.04 Al 5 O 12 crystal were much higher than those for the Y 2.96 Er 0.04 Al 5 O 12 crystal. Overall, the results of the present study suggest that Yb 2.96 Er 0.04 Al 5 O 12 single crystal may have advantages over Y 2.96 Er 0.04 Al 5 O 12 single crystal for luminescence in solid-state lasers.
研究领域:
光学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS LETTERS
·
2012
·
IF 2.307
Yanjie Liang,Kangning Sun,Weili Wang,Pengfei Chui,Xiaolin Sun
In this paper, YVO 4 :Yb 3+ ,Er 3+ microspheres have been successfully prepared through a facile hydrothermal method assisted with disodium ethylenediaminetetraacetic acid and citric acid. X-ray diffraction, field emission scanning electron microscopy , energy disperse X-ray spectroscopy, high resolution transmission electron microscopy , and photoluminescence spectra were used to characterize the samples. The results reveal that the as-prepared YVO 4 :Yb 3+ ,Er 3+ samples are well-crystallized and spherical in shape. Moreover, the microspheres with diameters of 6–8 μm are assembled by numerous submicron cuboids. Under the excitation of a 980 nm laser diode , the samples show the characteristic emissions of Er 3+ and the green emissions at 525 nm of 2 H 11/2 → 4 I 15/2 are dominantly strong.
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
T. Wei,Z. Dong,C.Z. Zhao,Y.J. Ma,T.B. Zhang,Y.F. Xie,Q.J. Zhou,Z.P. Li
Er-doped Sr 2 Bi 4 Ti 5 O 18 (SBT- x ) ceramics were synthesized via a solid-state reaction method, and their structure, up-conversion luminescence (UCL), temperature sensing performance and ferroelectric behaviors were investigated. The obtained SBT- x samples crystallize in the polar orthorhombic phase, with space group B2cb. Under 980 nm excitation, bright green and weak red emissions are observed which correspond to the transitions from 2 H 11/2 / 4 S 3/2 and 4 F 9/2 to 4 I 15/2 level, respectively. The optimal doping concentration of Er 3+ in SBT host is determined as 0.08. The critical energy transfer distance ( R c ) is about 20.57 Å and the major interaction mechanism among Er 3+ ions is determined as the d–d interaction. A possible UCL mechanism is proposed in light of the dependence of emission intensities on pumping power. Furthermore, optical temperature sensing properties are also investigated according to the fluorescence intensity ratio (FIR) of green emissions at 527 and 550 nm in the temperature range from 303 K to 573 K. The maximum sensing sensitivity is found to be 0.0042 K −1 . Additionally, the response of SBT- x to external electric field stimuli is also confirmed. It is believed that SBT- x has potential application as optical temperature sensing materials.
研究领域:
材料科学
·
光学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2021
·
IF 3.498
Pengfei Shuai,Qingfeng Guo,Libing Liao,Maobi Xiang,Ke Su,Lefu Mei
Cryolite has been considered as an appropriate host for up-conversion materials due to its low phonon energy, wide light transmission range, easy to form waveguide and stable structure. In this paper, a series of up-conversion materials Cs 3 YF 6 : Er 3+ , Yb 3+ with cryolite structure were prepared by high-temperature solid-phase method. The structure, morphology, element composition and up-conversion luminescence properties of as-prepared samples were characterized. In addition, the number of photons absorbed during the up-conversion process and the possible up-conversion luminescence mechanism are analyzed in detail. Under the excitation of 980 nm, the Cs 3 YF 6 : Er 3+ , Yb 3+ sample emits strong green light visible to the naked eye. Simultaneously, the maximum absolute sensitivity (S a ) and relative sensitivity (S r ) were calculated. All the results indicated that Cs 3 YF 6 : Er 3+ , Yb 3+ has potential applications in the fields of green light display and temperature sensing.
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 THE EUROPEAN CERAMIC SOCIETY
·
2021
·
IF 5.302
Zuodong Liu,Yumeng Ji,Chunyan Xu,Yuqing Wang,Yang Liu,Qilong Shen,Guoqiang Yi,Yongsheng Yu,Bingchu Mei,Peng Liu,Qiangshan Jing
Raw SrF 2 powders were synthesized by the chemical precipitation method, and the mean particle size was 58.48 nm. Er:SrF 2 transparent ceramics were obtained by hot-pressed (HP) technique, and the effect of ErF 3 levels on the transparency, microstructure, luminescence spectroscopic and microhardness were studied. The ratio of emission intensities R (Red/Green) increased with the ErF 3 doping levels. The addition of ErF 3 was found effectively to reduce grain size and has a positive effect on improving the microhardness. The SrF 2 ceramic doped with 5 wt.% ErF 3 (2 mm thick) showed the best optical transparency, the transmittance at 500 nm and 1200 nm are 87.9 % and 89.5 %, respectively. The average grain size, Vickers hardness ( Hv ), and fracture toughness ( K IC ) for the SrF 2 ceramic were 21.1 ± 4.5 μm, 1.73 ± 0.04 GPa, and 0.52 ± 0.08 MPa·m 1/2 , respectively.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2022
·Vol. 106
·期 2
·1333-1343
·
IF 4.186
Jie Fu,Liuyan Zhou,Yanling Chen,Jianhua Lin,Renguang Ye,Lei Lei,Yang Shen,Degang Deng,Shiqing Xu
Here, Bi 3+ , Er 3+ co-activated gadolinium phosphors with multimode emission properties are prepared, which can emits blue, green, and orange light under the excitation of ultraviolet, 980 and 1550 nm, respectively. Moreover, BaGd 2 O 4 :Bi 3+ , Er 3+ can show multicolor luminescence under different excitation conditions, such as pump light source, ambient temperature, working current, and other factors. Based on the dynamic luminescence characteristics, the dynamic anti-counterfeiting experiments are designed based on the phosphor. At the same time, the material also shows multimode temperature sensing characteristics. Under the excitation of 980 nm laser, three strong up-conversion signals Er 3+ ions are generated at 528 nm ( 2 H 11/2 ), 555 nm ( 4 S 3/2 ), and 668 nm ( 4 F 9/2 ), which have different temperature dependences. Based on the fluorescence intensity ratio between thermal-coupled energy levels ( 2 H 11/2 / 4 S 3/2 ) and nonthermal-coupled energy levels ( 2 H 11/2 / 4 F 9/2 ) of Er 3+ ions, respectively, the dual-mode temperature thermometer was constructed with high-temperature sensitivity. In addition, the fluorescence lifetime of Bi 3+ ions also has a strong temperature dependence, which can be used as another temperature detection signal, greatly improving the stability of thermometers under harsh conditions. Therefore, the material has a bright prospect in the field of anti-counterfeiting and temperature sensing.
研究领域:
材料科学
·
光学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）