Journal of Materials Chemistry C
·
2020
·Vol. 8
·期 29
·9836-9844
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IF 7.059
Xinxin Han,Enhai Song,Weibin Chen,Yayun Zhou,Qinyuan Zhang
Due to the lack of intermediate levels and the large energy mismatch with Yb3+, the achievement of efficient upconversion (UC) of Eu3+ is a great challenge. Herein, intense UC emission of Eu3+ is demonstrated via controllable and efficient unidirectional energy transfer from Yb3+–Mn2+ dimers in perovskite fluoride KCdF3:Yb3+,Mn2+,Eu3+ synthesized by a facile solvothermal method. The UC emission color of KCdF3:Yb3+,Mn2+,Eu3+ can be well tuned from yellow to orange and ultimately turned into Eu3+ pure red emission by controlling the Eu3+ concentration. Moreover, a significantly prolonged Eu3+ UC emission lifetime is observed in this system, and it is ascribed to the genetic effect of the sustained resonance energy transfer from Yb3+–Mn2+ dimers to Eu3+. The pump power and temperature dependent UC behaviors further suggest that the phosphor exhibits excellent chromaticity stability. Owing to the long-lived and chromaticity stable UC luminescence, the as-prepared KCdF3:Yb3+,Mn2+,Eu3+ phosphor may be a highly suitable candidate for lifetime-encoded information encryption, anti-counterfeiting, etc.
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METHODS
·
2019
·
IF 3.782
Hongshun Hao,Shouchen Hao,Hongman Hou,Gongliang Zhang,Yunxia Hou,Zuowei Zhang,Jingran Bi,Shuang Yan
A novel photoelectrochemical (PEC) immunosensor based on CdSe quantum dots (QDs) sensitized Ho 3+ /Yb 3+ -TiO 2 for the detection of Vibrio parahaemolyticus (VP) was assembled. The working electrode was constructed via the layer-by-layer (LBL) method with the Ho 3+ /Yb 3+ -TiO 2 , CdSe QDs, NHS/EDC, antibody of VP (anti-VP), bovine serum albumin (BSA) modified on the surface of the FTO in sequence. Ascorbic acid (AA) acts as an electron donor to combine photogenerated holes in order to provide a stable current system. Ho 3+ and Yb 3+ co-doping TiO 2 broadened the spectral response range of TiO 2 to the infrared region and improved the photocurrent responsiveness of TiO 2 . The PEC immunosensor, with Ho 3+ /Yb 3+ ratio of 1:5, Ho 3+ /Yb 3+ -TiO 2 of 2 mg/mL and PBS solution of pH 7.4, had an optimal photocurrent responsiveness. Immobilization of anti-VP was by classical NHS/EDC coupling reactions between COOH groups of CdSe QDs and NH 2 groups of the anti-VP. The results indicated that PEC immunosensors had a low detection limit of 25 CFU/mL, a wide detection range of 10 2 –10 8 CFU/mL, high stability, low price, and short detection time. This method could be promising for the rapid and ultrasensitive detection of pathogenic microorganisms in the food.
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高影响因子
SOLAR ENERGY
·
2020
·
IF 4.608
Hanyu Yao,Quntao Tang
To improve energy conversion efficiency ( E ff ) of silicon solar cells, luminescent down-conversion (DC) is an effective approach to adjust solar spectrum by converting ultraviolet light to visible and near-infrared light. In this paper, Tb 3+ - Yb 3+ co-doped NaYF 4 phosphors (DCNPs) were successfully synthesized by a simple solvothermal method. It was confirmed from the strong photoluminescence excitation (PLE) and photoluminescence (PL) emission peaks that the energy transfer occured between Tb 3+ and Yb 3+ ions. The DCNPs were added in the SiO 2 sol-gel to prepare anti-reflection coatings with DC performance, enhancing the visible and near-infrared region transmittance which matched with the band gap of silicon. An optimized short-circuit current density ( J sc ) of 33.39 mA/cm 2 and a relatively enhanced E ff of 6.74% were achieved in the silicon solar cells with the bi-functional film. These results indicated the availability of anti-reflection coating with DCNPs for improving energy conversion efficiency of silicon solar cells.
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高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2022
·
IF 6.76
Jie Huang,Xuhua Ye,Wenjun Li,Anqi Shi,Xini Chu,Ziwen Cao,Chao Yao,Xiazhang Li
Developing low cost and efficient strategy to eliminate volatile organic compounds (VOCs) are quite urgent and challenging. Herein, CeO 2 nanoparticles co-doped with Yb 3+ and Er 3+ were immobilized on attapulgite clay (ATP) for photothermal catalytic oxidation of toluene. The CeO 2 :Yb 3+ , Er 3+ /ATP exhibited outstanding catalytic activity with low T 90 of 295 °C (temperature at 90% degradation), satisfactory stability and highly water resistance. The enhanced photothermal catalytic performance can be attributed to the optimal introduction of Yb 3+ and Er 3+ , which promoted the up-conversion of near-infrared light (NIR) to visible light increasing the light utilization. The defects caused by Yb 3+ /Er 3+ doping facilitated the adsorption of O 2 , while the active oxygen species generated from the defects and the photoinduced reactive species not only favored the oxidation of toluene in photothermal catalytic process, but also accelerated the reoxidation of reduced catalyst. Notably ATP support provided large specific surface area and abundant adsorption sites for toluene molecules to promote the deep oxidation and hindered the deactivation of catalysts caused by the accumulation of intermediates. In-situ DRIFTS test revealed that the alkoxide and benzoate appeared as the main intermediates, which can be deeply oxidized under light irradiation. Current work provides a new alternative for photothermal catalytic degradation of VOCs.
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JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2015
·Vol. 15
·期 12
·9656-9664
·
IF 1.556
Wang Chuanying,Cheng Xianhua
Yb3+ and Er3+ ions co-doped α-NaYF4:Yb3+, Er3+ nanocrystals were successfully synthesized via a facile hydrothermal method using citric acid (CA) as chelating ligand and NaNO3 as mineralizer. The influences
of the CA/RE (RE= Y+Yb+Er) molar ratio, reaction time, reaction temperature and the NaNO3/RE molar ratio on the crystal phases and shapes of as-prepared products have been well investigated. The possible formation mechanism has been discussed in detail and an aggregation growth
theory has been proposed. X-ray diffraction (XRD), transmission electron microscopy (TEM), selected area electron diffraction (SAED), scanning electron microscopy (SEM), and photoluminescence (PL) spectra were used to characterize the products. Under 980 nm excitation, the emission intensities
of the as-prepared nanocrystals were much stronger than that of the nanocrystals modified by ethylenediaminetetraacetic acid (EDTA). Additionally, the as-prepared products maintained spherical shape and high degree of monodispersion, which is expected to be suggestive for the preparation of
other complex rare earth fluoride compounds.
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PubMed
高影响因子
DALTON TRANSACTIONS
·
2019
·Vol. 48
·期 28
·10537-10546
·
IF 4.052
Guofeng Liu,Yeqing Chen,Mochen Jia,Zhen Sun,Binbin Ding,Shuai Shao,Fan Jiang,Zuoling Fu,Ping'an Ma,Jun Lin
Rare earth ion-doped fluoride upconversion nanoparticles (UCNPs), emerging as a novel class of probes and drug carriers, exhibit superior promise for bio-applications in diagnostics and treatment on account of their strong luminescence, fine biocompatibility, and high drug loading. However, the fine control and manipulation of particle size and the distribution of rare earth ion-doped oxides has remained an insurmountable challenge to date. In this work, we construct and synthesize silica-coated Gd2(WO4)3:Yb3+/Ho3+ nanoparticles by one-pot co-precipitation, with uniform distribution (∼130 nm) and enhanced yellow fluorescence. Particularly, the nanoparticles not only possess outstanding temperature sensing performance at biological temperatures in water by utilizing the fluorescence intensity ratio (FIR) method, but also allow a further serviceable contrast effect in vitro and in vivo based on the prominent T1-weighted magnetic resonance (MR) signal of Gd3+. Compared with cisplatin and platinum(IV) (DSP), the Gd2(WO4)3@SiO2 nanoparticles functionalized with DSP (Gd2(WO4)3@SiO2-Pt-PEG) exert higher lethality against CT26 cells and significantly inhibit the growth of tumors at the same concentration of Pt. This effect occurs through the greater level of cell endocytosis. The lethality value of the latter is 10 times higher than the former after the same length of time according to inductively coupled plasma-mass spectrometry (ICP-MS) results. In short, the monodisperse and strongly fluorescent Gd2(WO4)3@SiO2-Pt-PEG nanoparticles are endowed with dual-mode imaging, temperature sensing and anticancer functions, which provide a significant guide for synthesis and bio-application of lanthanide ion-doped oxides.
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PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Shanshan Zhao,Xiaoshan Zhang,Ruilin Zheng,Hehe Dong,Shiyu Sun,Fan Wang,Shubin Chen,Shikai Wang,Chunlei Yu,Lili Hu
Quantum cutting in the near-infrared (NIR) region offers an effective strategy for enhancing the photoelectric conversion efficiency of silicon-based (c-Si) solar cells. However, developing materials capable of simultaneously converting visible and ultraviolet (UV) light into NIR emission remains a major challenge. Matching the energy gap between Pr 3+ 3 P j (j = 0, 1, and 2) and Yb 3+ 2 F 7/2 levels enables resonance energy transfer (ET), resulting in efficient quantum cutting and upconverted emissions. In this study, a series of CaLaAl 3 O 7 :Pr 3+ /Yb 3+ phosphors was prepared via high-temperature solid-state reactions. Upon excitation at 450 and 250 nm, Pr 3+ /Yb 3+ co-doped phosphors demonstrated downshifted emission peaks at 484, 526, 548, 594, 604, 615, 644, and 728 nm, attributed to the 3 P 0 → 3 H 4 , 3 P 0 → 3 H 5 , 3 P 1 → 3 H 5 , 3 P 1 → 3 H 6 , 1 D 2 → 3 H 4 , 3 P 0 → 3 H 6 , 3 P 0 → 3 F 2 , and 3 P 0 → 3 F 4 transitions of Pr 3+ , respectively. Moreover, under 450 nm excitation, an intense NIR emission was observed at 980 nm, resulting from ET from Pr 3+ to Yb 3+ , and the quantum cutting efficiency ( ) for the 3 P 0 → 3 F 2 transition becomes 190% at a Yb 3+ concentration of 20%. Meanwhile, the quantum cutting efficiency ( ) for the 3 P 0 → 3 H 4 transition becomes 189% at a Yb 3+ concentration of 20% under 250 nm excitation. Notably, the CaLaAl 3 O 7 single-doped Yb 3+ sample demonstrated intense charge transfer luminescence under 257 nm excitation. Temperature-dependent spectral measurements revealed that the materials possess excellent thermal stability. Furthermore, under 980 nm NIR excitation, characteristic visible-light luminescence of Pr 3+ was observed. The fitted slope of the upconversion luminescence intensity as a function of laser pump power density was n 460-516 = 2.36, indicating a two-photon absorption upconversion process. These materials have the potential to not only enhance the photoelectric conversion efficiency of silicon-based solar cells but also mitigate excessive heating of silicon-based space cells under intense UV irradiation.
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产品关联
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2016
·Vol. 27
·期 8
·8254-8270
·
IF 1.798
Xi Junhua,Ding Mingye,Dai Jianbin,Pan Yajing,Chen Daqin,Ji Zhenguo
In this paper, Yb 3+ /Er 3+ co-doped hexagonal NaYF 4 have been successfully synthesized by solvothermal, thermal decomposition, hydrothermal and molten salt method, respectively. The crystal structures, particle morphologies, sizes and corresponding upconversion luminescent properties of β-NaYF 4 :Yb 3+ /Er 3+ nano/microcrystals are systemically studied. It is interesting to observed that the temperature-dependent UC luminescent properties of β-NaYF 4 :20 %Yb 3+ , 2 %Er 3+ samples are strongly related to their synthesis methods. Comparison of the upconversion luminescence and thermal sensitivity between the β-NaYF 4 :Yb 3+ /Er 3+ samples reveals that β-NaYF 4 :Yb 3+ /Er 3+ sub-microplates synthesized by thermal decomposition method have much stronger green emission intensity, better luminescent thermal stability and higher temperature sensitivity. This findings are relevant to the application of β-NaYF 4 :Yb 3+ /Er 3+ in optical temperature sensors and to the further understanding of the UC luminescent mechanism.
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高影响因子
Advanced Optical Materials
·
2025
·
IF 7.2
Xiaolong Dong,Xin Zhao,Lifan Shen,Maosen Hu,Edwin Yue Bun Pun,Hai Lin
The construction of perovskite-based luminescent systems for multifunctional integrated platforms via reciprocal energy transfer (ET) cascades emerges as a central focus, but the material design and photophysical control remain a significant challenge. Herein, a strong power-dependent quantum yield behavior is observed in Cs 2 NaInCl 6 : Ho 3+ -Yb 3+ (CNIC: Ho-Yb) phosphors with ultra-low phonon energy, and quantified multiphoton upconversion (UC) efficiencies exhibit ultra-linear enhancement with the increasing excitation power, ensuring practical applicability for UC-based temperature sensing. Moreover, an efficient quantum cutting process is unveiled in the CNIC: Ho-Yb, where a single high-energy photon of Ho 3+ is converted into multiple NIR emissions of Yb 3+ via energy redistribution under 453 nm laser excitation, offering significant potential for enhancing near-infrared (NIR) imaging capability in biological tissues. To address the inherent structural and functional limitations of powder-based materials, the CNIC: Ho-Yb/polyacrylonitrile (CNIC: Ho-Yb/PAN) nanofibers are synthesized by electrospinning, and the functional integration platform based on the efficient bidirectional ET is built by coupling 453 and 980 nm lasers to enable selective applications in flexible thermal monitoring and NIR bioimaging. These findings enable next-generation flexible thermometry platforms with higher sensitivity, signal fidelity, and device-level applicability, while also paving the way for non-invasive and high-contrast deep-tissue imaging in biomedical diagnostics.
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高影响因子
Advanced Materials Interfaces
·
2026
·
IF 4.4
Jing Lyu,Sijie Su,Xin Wang,Enhai Song,Qinyuan Zhang
Er 3+ /Yb 3+ co-doped upconversion (UC) emission phosphors play crucial roles for advancing implantable temperature sensing technologies. However, the fabrication of high-performance optical fiber temperature sensor (OFTS) via these sensing materials remains a major challenge. Herein, we demonstrate a superior double-cladding OFTS by utilizing a bright and stable near-pure green UC phosphor NaLu(WO 4 ) 2 :Er 3+ /Yb 3+ as sensing material. Comprehensive investigations show that the near pure-green UC emission mechanism is mainly attributed to the isolated distributed characteristics of Er 3+ (Yb 3+ ) ions and the relatively long distance between them in this system. The OFTS exhibits a high temperature measurement accuracy of 0.155°C at 303 K, excellent measuring repeatability and chemical stability, along with strong resistance to various physical interferences (excitation power fluctuation, mechanical vibration, etc.). Through non-destructive implantation of the OFTS into a sodium-ion pouch-type battery, the battery's internal thermal states (temperature variation) during constant current (CC)/constant voltage charging discharging processes at different C-rates are captured in real time. Moreover, we also get the temperature variation and distribution in vertical direction in an oil-water system via mobile measurement of the OFTS. This study not only provides a high performance implantable OFTS but also shows new insights into the design of Er 3+ /Yb 3+ based sensing materials.
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高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2026
·
IF 4.4
Kaiming Kan,Shujing Pan,Mengyu Zhang,Wenzhi Su,Yong Zou,Shoujun Ding
Monoclinic Yb 3+ /Er 3+ :KBi(MoO 4 ) 2 upconversion phosphors were synthesized by solid-state reaction method. • Lower symmetry induces stronger Stark splitting, enlarging ΔE ( 2 H 11/2 - 4 S 3/2 ) to 859 cm −1 . • The absolute optical temperature sensitivity is improved by ∼1.17× over the tetragonal counterpart. • The optical thermometric of the sample exhibits good reversibility and cycling stability. In this work, Yb 3+ /Er 3+ co-doped KBi(MoO 4 ) 2 (KBM) upconversion (UC) phosphors were successfully synthesized via high-temperature solid-state reaction. Structural characterization revealed that the as-prepared samples crystallize in a monoclinic phase, rather than the conventional tetragonal phase. Under 980 nm excitation, the samples exhibit the characteristic Er 3+ -based UC emissions, and optical thermometric behavior was investigated using the fluorescence intensity ratio (FIR) of the thermally coupled levels of Er 3+ ( 2 H 11/2 / 4 S 3/2 ). Owing to the lower symmetry of the monoclinic lattice, Stark splitting of lanthanide energy levels is enhanced. As a result, the effective energy gap between the thermally coupled levels is markedly enlarged from 506 cm −1 (tetragonal structure) to 859 cm −1 (monoclinic structure). Benefiting from the increased energy separation, the optical thermometric performance is significantly enhanced: the absolute sensitivity is improved by 1.17 times, while the relative sensitivity is increased by 1.75 times compared with the tetragonal counterpart. In addition, cyclic heating-cooling measurements demonstrate good reversibility and stability. By introducing monoclinic-phase KBM:Yb 3+ /Er 3+ phosphors, this work verifies the feasibility of enhancing thermally coupled-level-based optical thermometry in rare-earth double-molybdate systems via crystal-structure regulation, providing an effective strategy for developing high-sensitivity optical thermometric materials. Enlarge Er 3+ thermally coupled level splitting in monoclinic Yb 3+ /Er 3+ Co-doped KBi(MoO 4 ) 2 by structure modification to improving optical thermometry sensitivity. Download: Download high-res image (74KB) Download: Download full-size image
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高影响因子
MATERIALS RESEARCH BULLETIN
·
2019
·
IF 3.355
Yanqiu Zhang,Sai Xu,Xiangping Li,Jinsu Zhang,Jiashi Sun,Haiping Xia,Ruinian Hua,Baojiu Chen
Novel nanoplatform with excellent photothermal conversion and temperature feedback are preferable in clinical photothermal therapy (PTT). In this work, a hybrid of NaYF 4 :Er 3+ ,Yb 3+ @NaYF 4 upconversion nanoparticles (UCNPs) conjugated with gold nanorods (GNRs) was fabricated in order to achieve effective photothermal conversion and excellent temperature detection. In this nanoplatform, the GNRs as photo-activated nano-heaters could effectively convert the 808 nm photoenergy into heat, meanwhile UCNPs as 980 nm triggered temperature probe could read the temperature in an exact microdomain where the nanocomposite was located at. The effects of excitation source, GNRs concentration and power density on photothermal conversion were investigated. In addition, the difference between eigen temperature of nanoparticles and solution temperature, and the potential for temperature feedback were analyzed under double lasers excitation. Moreover, the photothermal conversion efficiency was experimentally confirmed from thermodynamic analysis. It was found that the nanocomposite can be an excellent nanoplatform for potential application in advanced PTT.
研究领域:
生物医学工程
·
纳米医学
·
肿瘤治疗
·
光热疗法
·
分子影像
·
热疗监测
·
转化医学
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高影响因子
危险品化学品经营许可证（带存储）