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Xu H, Li K, Dai M, Fu Z. Towards core-shell engineering for efficient luminescence and temperature sensing. J Colloid Interface Sci 2024; 673:249-257. [PMID: 38875790 DOI: 10.1016/j.jcis.2024.06.071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Revised: 06/05/2024] [Accepted: 06/07/2024] [Indexed: 06/16/2024]
Abstract
Research on the core-shell design of rare earth-doped nanoparticles has recently gained significant attention, particularly in exploring the synergistic effects of combining active and inert shell layers. In this study, we successfully synthesized 8 types of spherical core-shell Na-based nanoparticles to enhance the efficiency of core-shell design in upconversion luminescence and temperature sensing through the strategic arrangement of inert and active layers. The most effective upconversion luminescence was observed under 980 nm and 808 nm laser excitation using NaYF4 inert shell NaYF4:Yb3+, Er3+@ NaYF4 and NaYF4@ NaYF4:Yb3+, Nd3+ core-shell nanostructures. Moreover, the incorporation of the NaYbF4 active shell structure led to a significant increase in relative sensitivity in ratio luminescence thermometry. Notably, the NaYF4:Yb3+, Nd3+, Er3+@ NaYbF4 core-shell structure demonstrated the highest relative sensitivity of 1.12 %K-1. This research underscores the crucial role of inert shell layers in enhancing upconversion luminescence in core-shell structure design, while active layers play a key role in achieving high-sensitivity temperature detection capabilities.
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Affiliation(s)
- Hanyu Xu
- Key Laboratory of Physics and Technology for Advanced Batteries, College of Physics, Jilin University, Changchun 130012, China
| | - Kejie Li
- Key Laboratory of Physics and Technology for Advanced Batteries, College of Physics, Jilin University, Changchun 130012, China
| | - Mengmeng Dai
- Key Laboratory of Physics and Technology for Advanced Batteries, College of Physics, Jilin University, Changchun 130012, China
| | - Zuoling Fu
- Key Laboratory of Physics and Technology for Advanced Batteries, College of Physics, Jilin University, Changchun 130012, China.
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2
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Dubey C, Yadav A, Baloni D, Kachhap S, Singh SK, Singh AK. Impact of crystal structure on optical properties and temperature sensing behavior of NaYF 4:Yb 3+/Er 3+ nanoparticles. RSC Adv 2023; 13:20975-20983. [PMID: 37441037 PMCID: PMC10334709 DOI: 10.1039/d3ra03148a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 07/06/2023] [Indexed: 07/15/2023] Open
Abstract
We report a comprehensive study of the structural, morphological, and optical properties, and UC-based ratiometric temperature sensing behavior of (α) cubic and (β) hexagonal phases of NaYF4:Yb3+/Er3+ nanoparticles. The α-NaYF4:Yb3+/Er3+ and β-NaYF4:Yb3+/Er3+ nanoparticles were synthesized using co-precipitation and hydrothermal methods, respectively. Powder X-ray diffraction studies confirmed the phase purity of the samples. The morphological studies show uniform particle sizes of both phases; the average particle size of α-NaYF4:Yb3+/Er3+ and β-NaYF4:Yb3+/Er3+ was 9.2 nm and 29 nm, respectively. The Raman spectra reveal five sharp peaks at 253 cm-1, 307 cm-1, 359 cm-1, 485 cm-1, and 628 cm-1 for β-NaYF4:Yb3+/Er3+, whereas α-NaYF4:Yb3+/Er3+ shows two broad peaks centred at 272 cm-1 and 721 cm-1. The optical property measurements show that α- and β-NaYF4:Yb3+/Er3+ phases have distinct upconversion emission and temperature sensing behavior. The upconversion emission measurements show that β-NaYF4:Yb3+/Er3+ has higher overall emission intensities and green/red emission intensity ratio. The temperature-dependent upconversion emission measurements show that α-NaYF4:Yb3+/Er3+ has higher energy separation between 2H11/2 and 4S3/2 energy states. The temperature sensing performed utilizing these thermally coupled energy levels shows a maximum sensitivity of 0.0069 K-1 at 543 K and 0.016 K-1 at 422 K for β-NaYF4:Yb3+/Er3+ and α-NaYF4:Yb3+/Er3+, respectively.
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Affiliation(s)
- Charu Dubey
- Department of Physical Sciences, Banasthali Vidyapith Banasthali-304022 Rajasthan India
| | - Anjana Yadav
- Department of Physical Sciences, Banasthali Vidyapith Banasthali-304022 Rajasthan India
| | - Diksha Baloni
- Department of Physical Sciences, Banasthali Vidyapith Banasthali-304022 Rajasthan India
| | - Santosh Kachhap
- Department of Physics, Indian Institute of Technology (Banaras Hindu University) Varanasi-221005 India
| | - Sunil Kumar Singh
- Department of Physics, Indian Institute of Technology (Banaras Hindu University) Varanasi-221005 India
| | - Akhilesh Kumar Singh
- Department of Physical Sciences, Banasthali Vidyapith Banasthali-304022 Rajasthan India
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3
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Ryba-Romanowski W, Komar J, Lisiecki R. Examining the Spectroscopic and Thermographic Qualities of Er 3+-doped Oxyfluoride Germanotellurite Glasses. MATERIALS (BASEL, SWITZERLAND) 2022; 15:7651. [PMID: 36363241 PMCID: PMC9654541 DOI: 10.3390/ma15217651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 10/25/2022] [Accepted: 10/28/2022] [Indexed: 06/16/2023]
Abstract
Novel ternary fluoro-germano-tellurite (GTS) glasses doped with Er3+ ions with 0.5 mol% and 1.0 mol% were fabricated by a conventional melt and quenching method and investigated using methods of optical spectroscopy. The room-temperature absorption spectrum was recorded and analyzed to determine radiative transition rates, radiative lifetimes, and branching ratios of Er3+ luminescence. Decay curves of Er3+ luminesccence were recorded and analyzed. Temperature dependences of emission spectra and absorption spectra in the region from RT (room-temperature) up to 675 K were studied in detail. The contribution of competing radiative and nonradiative processes to the relaxation of luminescent levels of Er3+ was assessed. Absolute and relative sensitivity were established utilizing the comprehensive model based on thermally coupled 2H11/2/4S3/2 excited states of erbium. The high quantum efficiency of the first erbium-excited state and value of gain coefficient indicate that GTS:Er glass system can be considered as conceivable NIR (near infrared) laser material as well.
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4
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Li L, Wu Z, Wang C, Han X, Marciniak L, Yang Y. Boltzmann-distribution-dominated persistent luminescence ratiometric thermometry in NaYF 4:Pr 3. OPTICS LETTERS 2022; 47:1701-1704. [PMID: 35363712 DOI: 10.1364/ol.455600] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 03/02/2022] [Indexed: 06/14/2023]
Abstract
A novel, to the best of our knowledge, optical temperature measurement method is proposed, i.e., persistent luminescence intensity ratio (PLIR) thermometry. The PLIR thermometry relies on the micro-sized NaYF4:Pr3+ material that can emit persistent luminescence (PersL) uninterruptedly after being charged by x ray irradiation. The 3P1→3H5 and 3P0→3H5 PersL transitions, locating separately at ∼ 522 and 538 nm, have been confirmed to follow the Boltzmann distribution. The emitting intensity ratio of this pair of PersL lines is thus found to be a good indicator of the variation of temperature. Our work is expected to enrich the optical temperature sensing family.
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5
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Marques de Souza JM, Lima KDO, Ferrari JL, Maia LJQ, Rocha Gonçalves R, Falci RF, Manzani D. Photoluminescence properties of Er 3+ and Er 3+/Yb 3+ doped tellurite glass and glass-ceramics containing Bi 2Te 4O 11 crystals. Dalton Trans 2022; 51:4087-4096. [PMID: 35179526 DOI: 10.1039/d1dt04097a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Glass and glass-ceramics containing nanocrystals of Bi2Te4O11 cubic phase co-doped with Er3+ and Yb3+ were prepared by heat treatment of the precursor tellurite glass and investigated for optical applications. Lanthanide doped tellurite glass and glass-ceramics have been extensively investigated because of their optical and photoluminescence performance for technological photonic applications. Er3+ and Er3+/Yb3+ doped TeO2-GeO2-K2O-Bi2O3 tellurite glass compositions were prepared by the conventional melt-quenching method. Photoluminescence results showed the important role played by Yb3+ ions when co-doping with Er3+ ions in comparison with the Er3+ single-doped glass. Due to their larger absorption cross-section, Yb3+ species significantly absorbs 980 nm photons and effectively transfers them to Er3+ ions via a set of mechanisms including ground-state absorption (GSA), excited-state absorption (ESA), and energy transfer upconversion (ETU). Er3+/Yb3+ co-doped sample was chosen for the synthesis of transparent glass-ceramics by controlled heat treatment above Tg for 5 to 120 min. X-ray diffraction patterns, high-resolution transmission electron microscopy (TEM) images, and selected area electron diffraction (SAED) from Er3+/Yb3+ co-doped glass-ceramic samples were used to verify the nanocrystal precipitation, crystalline phase, and chemical nature. The structural change resulting from the crystallization of Bi2Te4O11 nanocrystals was evaluated by the Raman shift of the bands between 300-500 cm-1, which are assigned to the formation of Bi-O-Te linkages and the reduction of [TeO3] depolymerized units. The effects of HT time on the glass-ceramic's optical and upconversion photoluminescence properties were studied in the visible range under excitation at 980 nm in terms of the energy transfer mechanisms from Yb3+ to Er3+. Results indicate that Er3+/Yb3+ co-doped tellurite glass and glass-ceramics are potential candidates for photonic applications in lighting, energy conversion, and luminescent solar cell concentrators.
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Affiliation(s)
| | | | | | | | | | | | - Danilo Manzani
- São Carlos Institute of Chemistry, University of São Paulo, IQSC-USP, São Carlos, SP, Brazil.
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6
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Yang Y, Li L, Suo H, Li P, Wang Z, Zhang Z. Eu 3+-based dual-excitation single-emission luminescent ratiometric thermometry. OPTICS EXPRESS 2022; 30:265-274. [PMID: 35201205 DOI: 10.1364/oe.445293] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 12/01/2021] [Indexed: 06/14/2023]
Abstract
Recently, single-band ratiometric (SBR) thermometry becomes a hot-spot in the research field of optical thermometry. Here we propose a new SBR thermometry by combining the temperature-induced red shift of charge transfer state (CTS) of W-O and Eu-O with the ground state absorption (GSA) and excited state absorption (ESA) of Eu3+. The emitting intensity of the 5D0-7F2 transition of Eu3+ is monitored under CTS, GSA and ESA excitations at different temperatures. It is found that the SBR thermometry, depending on the combination of [GSA + CTS] of Eu3+ doped calcium tungstate, has the highest relative sensitivity of 1.25% K-1 at 573 K, higher than conventional luminescent ratiometric thermometry such as the 2H11/2 and 4S3/2 thermally coupled states of Er3+.
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7
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Li C, Li Y, Pun EYB, lin H. A dual-ratiometric optical thermometry based on Sr2LaF7:Er3+ crystal-implanted pliable fibers. Dalton Trans 2022; 51:7997-8008. [DOI: 10.1039/d2dt00080f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sr2(La1-xErx)F7/polyacrylonitrile composite fibers with special pliability and excellent crystal dispersibility have been fabricated, which provide the smaller size and appropriate temperature sensitivity. Up-conversion emission shows quadratic dependence of the photoluminescence...
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8
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Huang Y, Peng S, Liu J, Feng Z, Huang W, Liao T. Optical fiber temperature sensor based on the upconversion fluorescence intensity ratio of NaYF 4:Er 3+ excited by a 1525-nm laser. APPLIED OPTICS 2022; 61:202-207. [PMID: 35200820 DOI: 10.1364/ao.442297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 11/02/2021] [Indexed: 06/14/2023]
Abstract
Remote and accurate temperature measurements in severe environments are of great importance. A 1525-nm wavelength located in the C band of optical fiber communication is used as a pumping light source for NaYF4:Er3+ phosphor possessing high upconversion efficiency. The upconversion luminescence characteristics were demonstrated in the temperature range of 160-400 K. Based on the thermal coupling energy level theory, the temperature measurement principle of the fluorescence intensity ratio is analyzed. The energy gap between the 2H11/2 and 4S3/2 energy levels of the Er3+ ions is approximately 787cm-1, which is appropriate for a temperature sensor. The experimental results indicated that its maximum temperature sensitivity was 0.00335K-1. The proposed optical fiber temperature sensor indicates good hysteresis and repeatability and has potential applications in resisting electromagnetic interference and remote temperature sensing.
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Jin J, Lin J, Huang Y, Zhang L, Jiang Y, Tian D, Lin F, Wang Y, Chen X. High sensitivity ratiometric fluorescence temperature sensing using the microencapsulation of CsPbBr3 and K2SiF6:Mn4+ phosphor. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.01.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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10
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Thongnak V, Joonhuay J, Amthong A. Polarization-selective absorption in an off-centered core-shell square quantum wire. OPTICS LETTERS 2021; 46:3259-3262. [PMID: 34197430 DOI: 10.1364/ol.426817] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 06/03/2021] [Indexed: 06/13/2023]
Abstract
Core-shell nanostructures are highly attractive; their electrical and optical properties can be tuned by engineering their shapes and types of core-shell materials to achieve optimal nanomaterials for a variety of applications. Unfortunately, in the synthesis process of core-shell structures, geometric defects may unintentionally happen and possibly lead to undesired properties. In this Letter, the defect due to eccentricity in a core-shell square quantum wire is numerically investigated using the finite difference approach. The effects of the core shifting diagonally and vertically on optical transitions are reported. The results show that even a small core shift causes fully polarization-dependent transitions. The shift also affects the splitting of absorption coefficients due to x- and y-polarized light, leading to polarization-selective absorption in some photon energy ranges. As a result, the considered quantum wire is an alternative structure for polarizing light or detecting polarized light.
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11
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Giang LTK, Trejgis K, Marciniak L, Vu N, Minh LQ. Fabrication and characterization of up-converting β-NaYF 4:Er 3+,Yb 3+@NaYF 4 core-shell nanoparticles for temperature sensing applications. Sci Rep 2020; 10:14672. [PMID: 32887918 PMCID: PMC7474078 DOI: 10.1038/s41598-020-71606-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 06/22/2020] [Indexed: 12/20/2022] Open
Abstract
This paper presents the use of soft template method to synthesize core and core-shell up-converting nanoparticles usefull for temperature sensing applications. Based on the stock solutions of core β-NaYF4:Er3+,Yb3+ nanoparticles and involving soft template method without any additional process of surface functionalization, it is possible to directly design the core-shell β-NaYF4:Er3+,Yb3+@NaYF4 nanoparticles, which can be perfectly dispersed in cyclohexane and surfactants like oleic acid (OA), triethanolamine (TEA) or Cetyltrimethylammonium bromide (CTAB). The morphological, crystalline and elemental characteristics of samples were investigated by Field Emission Scanning Electron Microscopy, X-Ray Diffraction, High Resolution Transmission Electron Microscopy, Selected Area Electron Diffraction patterns and Energy-Dispersive X-Ray Spectroscopy (EDX) measurements. The results showed that the synthesized NaYF4:Er3+,Yb3+@NaYF4 core-shell nanoparticles have roughly spherical shape, pure hexagonal β phase with core size of about 35 ± 5 nm and shell thickness of about 40 ± 5 nm. It has been shown that the coating of the β-NaYF4:Er3+,Yb3+ core with NaYF4 shell layer enables to enhance the green upconversion (UC) emission intensities in respect to red one. Under 976 nm excitation, the synthesized β-NaYF4:2%Er3+,19%Yb3+@NaYF4 core-shell nanoparticles revealed three strong emission bands at 520 nm, 545 nm and 650 nm corresponding to 2H11/2, 4S3/2 and 4F9/2 to 4I15/2 transitions of Er3+ ions with the lifetimes of 215, 193 and 474 µs, respectively. The calculated CIE chromaticity coordinates proved that the emission colour of core-shell nanoparticles was changed from red into yellowish green upon increasing the power density of the 976 nm laser from 0.73 to 9.95 W/cm2. The calculated slopes indicated that in the β-NaYF4:2%Er3+,19%Yb3+@NaYF4 core-shell nanoparticles, two-photon and three-photon UC processes took place simultaneously. Although the former one is similar as in the case of β-NaYF4:Er3+,Yb3+ bare core nanoparticles, the latter one, three-photon UC process for green emission occurs, due to cross relaxation processes of two Er3+ ions only within nanoparticles with core-shell architecture. Moreover, the energy difference between the 2H11/2 and 4S3/2 levels and associated constant of NaYF4@NaYF4 host lattice were determined and they reached ~ 813 cm-1 and 14.27 (r2 = 0.998), respectively. In order to investigate the suitability of nanoparticles for optical temperature sensing, the emission spectra were measured in a wide temperature range from 158 to 298 K. An exceptionally high value of relative sensitivity was obtained at 158 K and it amounted to 4.25% K-1. Further temperature increase resulted in gradual decrease of relative sensitivity, however, it maintained a high value > 1% K-1 in the entire analyzed temperature range.
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Affiliation(s)
- Lam Thi Kieu Giang
- Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay District, Hanoi, Vietnam.
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay District, Hanoi, Vietnam.
| | - Karolina Trejgis
- Institute of Low Temperature and Structural Research, Polish Academy of Sciences, ul. Okólna 2, 50-422, Wrocław, Poland
| | - Lukasz Marciniak
- Institute of Low Temperature and Structural Research, Polish Academy of Sciences, ul. Okólna 2, 50-422, Wrocław, Poland
| | - Nguyen Vu
- Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay District, Hanoi, Vietnam
| | - Le Quoc Minh
- Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay District, Hanoi, Vietnam
- Duy Tan University, 7/25 Quang Trung, Da Nang, Vietnam
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Hu J, Wang R, Fan R, Wang F, Xiong H, Huang Z, Liu L, Fu H. Nanocomposites of Au Nanorods and Core–Shell NaGdF4:Yb3+,Er3+@NaYF4 Upconversion Nanoparticles for Temperature Sensing. ACS APPLIED NANO MATERIALS 2020. [DOI: 10.1021/acsanm.0c01686] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Junshan Hu
- School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, People’s Republic of China
| | - Ruonan Wang
- School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, People’s Republic of China
| | - Rangrang Fan
- State Key Laboratory of Biotherapy and Cancer Center, Department of Neurosurgery, West China Hospital, Collaborative Innovation Center for Biotherapy, Sichuan University, Chengdu 610041, People’s Republic of China
| | - Fengyi Wang
- Department of Chemistry, National University of Singapore, 117543, Singapore
| | - Huiyu Xiong
- Glasgow College, University of Electronic Science and Technology of China, Chengdu 611731, People’s Republic of China
| | - Zhenghu Huang
- School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, People’s Republic of China
| | - Lixin Liu
- School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, People’s Republic of China
| | - Hao Fu
- School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, People’s Republic of China
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Zhou Y, Li L, Qin F, Zhang Z. Stably and highly sensitive FIR thermometry over a wide temperature range of 303-753 K based on the GdVO 4:Eu 3+ and Al 2O 3:Cr 3+ hybrid particles. OPTICS EXPRESS 2020; 28:14366-14373. [PMID: 32403477 DOI: 10.1364/oe.393115] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 04/17/2020] [Indexed: 06/11/2023]
Abstract
Fluorescence intensity ratio (FIR) temperature sensors provide an effective method to control or study fine variations in physical and biological research because of their high sensitivity, accuracy, and spatial resolution. However, it is difficult to maintain high sensitivity over a wide temperature range using FIR temperature sensors because of the limits of the Boltzmann distribution law. In this study, sensitivity amplification for a wide temperature range in FIR thermometry based on GdVO4:Eu3+ and Al2O3:Cr3+ hybrid particles is achieved. The mechanism of the non-monotonic temperature dependence of the relative sensitivity (Sr) is studied. The results demonstrate that the Sr stably keeps ∼2.4% per K over a wide temperature range of 303-753 K, thus providing a basis for the extensive application of FIR temperature sensors.
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Li L, Qin F, Zhou Y, Miao J, Zhang Z. Origin of the giant thermal enhancement of the Er 3+ ion's 4I 9/2- 4I 15/2 photoluminescence. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 229:117862. [PMID: 31806477 DOI: 10.1016/j.saa.2019.117862] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 10/24/2019] [Accepted: 11/24/2019] [Indexed: 06/10/2023]
Abstract
The Er3+ ion's 4I9/2-4I15/2 emission spectrum, which was rarely reported before, was successfully observed in the as-prepared scheelite-structured CaWO4:Yb3+,Er3+ phosphors, upon excitation at 980 nm. This photoluminescence, peaking at ca. 800 nm, was found to undergo a monotonous and giant enhancement with increasing the temperature from 333 to 813 K. Its dependence on pump power revealed that this emission spectrum was from one-photon pumping mechanism. Together with the analysis on luminescence intensity ratio thermometry, it was confirmed that the giant enhancement of the 800 nm emission spectrum was most likely to come from the adjacent lower 4I11/2 state via a thermally coupled way.
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Affiliation(s)
- Leipeng Li
- School of Physics, Harbin Institute of Technology, Harbin 150001, China
| | - Feng Qin
- School of Instrumentation Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Yuan Zhou
- School of Physics, Harbin Institute of Technology, Harbin 150001, China
| | - Jipeng Miao
- School of Physics, Harbin Institute of Technology, Harbin 150001, China
| | - Zhiguo Zhang
- School of Instrumentation Science and Engineering, Harbin Institute of Technology, Harbin 150001, China.
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15
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Li L, Zhou Y, Qin F, Miao J, Zheng Y, Zhang Z. Eu 3+-based luminescence ratiometric thermometry. RSC Adv 2020; 10:9444-9449. [PMID: 35497207 PMCID: PMC9050129 DOI: 10.1039/d0ra00170h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 02/24/2020] [Indexed: 01/22/2023] Open
Abstract
Recently, luminescence ratiometric thermometry has gained ever-increasing attention due to its merits of rapid response, non-invasiveness, high spatial resolution, and so forth. For research fields relying on temperature measurements, achieving a higher relative sensitivity of this measurement is still an important task. In this work, we developed a strategy for achieving a more sensitive temperature measurement, one merely depending on the photoluminescence of Eu3+. We showed that using the 5D1–7F1 transition and the hypersensitive 5D0–7F2 transition of Eu3+ can boost the relative sensitivity compared with the method relying on the 5D1–7F1 and 5D0–7F1 transitions of Eu3+. The difference between these two strategies was studied and was explained by the hypersensitive 5D0–7F2 transition more steeply decreasing than the 5D0–7F1 transition with a rise in temperature. Our work is expected to help researchers design sensitive optical thermometers via proper use of this hypersensitive transition. We show that more sensitive luminescence ratiometric thermometry can be achieved using a hypersensitive Eu3+ transition.![]()
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Affiliation(s)
- Leipeng Li
- School of Physics, Harbin Institute of Technology Harbin 150001 P.R. China
| | - Yuan Zhou
- School of Physics, Harbin Institute of Technology Harbin 150001 P.R. China
| | - Feng Qin
- School of Instrumentation Science and Engineering, Condensed Matter Science and Technology Institute, Harbin Institute of Technology 92 West Dazhi Street, Nan Gang District Harbin Heilongjiang Province 150001 P.R. China +86-451-86402639 +86-451-86402639
| | - Jipeng Miao
- School of Physics, Harbin Institute of Technology Harbin 150001 P.R. China
| | - Yangdong Zheng
- School of Physics, Harbin Institute of Technology Harbin 150001 P.R. China
| | - Zhiguo Zhang
- School of Instrumentation Science and Engineering, Condensed Matter Science and Technology Institute, Harbin Institute of Technology 92 West Dazhi Street, Nan Gang District Harbin Heilongjiang Province 150001 P.R. China +86-451-86402639 +86-451-86402639
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16
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Yu C, Chen B, Zhang X, Li X, Zhang J, Xu S, Yu H, Sun J, Cao Y, Xia H. Influence of Er3+ concentration and Ln3+ on the Judd–Ofelt parameters in LnOCl (Ln = Y, La, Gd) phosphors. Phys Chem Chem Phys 2020; 22:7844-7852. [DOI: 10.1039/c9cp06755h] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We investigated the dependence of Judd–Ofelt parameters of Er3+ on the Er3+ doping concentration and Ln3+ in the host.
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Affiliation(s)
- Chunfeng Yu
- School of Science
- Dalian Maritime University
- Dalian
- P. R. China
| | - Baojiu Chen
- School of Science
- Dalian Maritime University
- Dalian
- P. R. China
| | - Xizhen Zhang
- School of Science
- Dalian Maritime University
- Dalian
- P. R. China
| | - Xiangping Li
- School of Science
- Dalian Maritime University
- Dalian
- P. R. China
| | - Jinsu Zhang
- School of Science
- Dalian Maritime University
- Dalian
- P. R. China
| | - Sai Xu
- School of Science
- Dalian Maritime University
- Dalian
- P. R. China
| | - Hongquan Yu
- School of Science
- Dalian Maritime University
- Dalian
- P. R. China
| | - Jiashi Sun
- School of Science
- Dalian Maritime University
- Dalian
- P. R. China
| | - Yongze Cao
- School of Science
- Dalian Maritime University
- Dalian
- P. R. China
| | - Haiping Xia
- Key Laboratory of Photo-electronic Materials
- Ningbo University
- Ningbo
- P. R. China
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17
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Gao X, Song F, Ju D, Zhou A, Khan A, Chen Z, Sang X, Feng M, Liu L. Room-temperature ultrafast synthesis, morphology and upconversion luminescence of K 0.3Bi 0.7F 2.4:Yb 3+/Er 3+ nanoparticles for temperature-sensing application. CrystEngComm 2020. [DOI: 10.1039/d0ce01231a] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This manuscript describes an ultrafast route at room temperature for the synthesis of the K0.3Bi0.7F2.4 nanoparticles with photoluminescence and luminescent temperature sensing.
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Affiliation(s)
- Xiaoli Gao
- School of Physics
- The Key Laboratory of Weak Light Nonlinear Photonics
- Ministry of Education
- Nankai University
- Tianjin
| | - Feng Song
- School of Physics
- The Key Laboratory of Weak Light Nonlinear Photonics
- Ministry of Education
- Nankai University
- Tianjin
| | - Dandan Ju
- School of Science
- Tianjin Chengjian University
- Tianjin 300384
- PR China
| | - Aihua Zhou
- Physics Department, School of Science
- Tianjin University of Science & Technology
- Tianjin 300457
- People's Republic of China
| | - Adnan Khan
- School of Physics
- The Key Laboratory of Weak Light Nonlinear Photonics
- Ministry of Education
- Nankai University
- Tianjin
| | - Ziyu Chen
- School of Physics
- The Key Laboratory of Weak Light Nonlinear Photonics
- Ministry of Education
- Nankai University
- Tianjin
| | - Xu Sang
- School of Physics
- The Key Laboratory of Weak Light Nonlinear Photonics
- Ministry of Education
- Nankai University
- Tianjin
| | - Ming Feng
- School of Physics
- The Key Laboratory of Weak Light Nonlinear Photonics
- Ministry of Education
- Nankai University
- Tianjin
| | - Lisa Liu
- School of Physics
- The Key Laboratory of Weak Light Nonlinear Photonics
- Ministry of Education
- Nankai University
- Tianjin
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18
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Sun L, Gao R, Pan T, Ai XC, Fu L, Zhang JP. Concentration-regulated photon upconversion and quenching in NaYF 4:Yb 3+,Er 3+ nanocrystals: nonexponentiality revisited. NANOSCALE 2019; 11:18150-18158. [PMID: 31556428 DOI: 10.1039/c9nr06521k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Concentration quenching of rare-earth doped upconversion nanoparticles severely limits the dopant concentration, and this greatly hinders their potential applications. Therefore, it is necessary to understand the roles of dopant concentration in photon population and luminescence quenching for materials designed with improved upconversion luminescence (UCL). Herein, the excited-state dynamics of well-accepted NaYF4:Yb3+,Er3+ nanocrystals were investigated as models based on the Kohlrausch-function. The use of the Kohlrausch-function successfully disentangled the rise and decay of dynamics data and well revealed the kinetics. Photon population and concentration quenching mechanisms depending on the sensitizer concentration are deeply revealed by the regular variations of the fitting parameters. The results indicated that high doping of sensitizers will accelerate the population of both green and red emitting energy levels, but cause significant concentration quenching in green emission and little quenching in red emission. Our work opened up new pathways of kinetics analysis, which is beneficial for further mechanism development, and established detailed photon population and concentration quenching models depending on the doping concentration of the sensitizer.
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Affiliation(s)
- Liyuan Sun
- Department of Chemistry, Renmin University of China, Beijing 100872, China.
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19
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Li L, Qin F, Zhou Y, Zhang X, Li L, Gao H, Zheng Y, Zhang Z. "Roller coaster"-like thermal evolution of the Er 3+ ion's red photoluminescence in CaWO 4:Yb 3+/Er 3+ phosphors. OPTICS LETTERS 2019; 44:4411-4414. [PMID: 31465414 DOI: 10.1364/ol.44.004411] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 08/06/2019] [Indexed: 06/10/2023]
Abstract
The abnormal "roller coaster"-like thermal evolution of the Er3+ ion's red photoluminescence (corresponding to the F9/24-I415/2 transition) in CaWO4:Yb3+/Er3+ phosphors is observed. This red emission suffers from a strong thermal quenching in the 293-573 K temperature range, followed by a sharp increase on further increasing the temperature. The mechanism behind this phenomenon is confirmed to be from the dynamic temperature-dependent multiple mechanisms imposed on the F9/24 state. At relatively low temperatures, the two-photon upconversion mechanism plays a leading role while, with the increasing of temperature, the one-photon channel, ascribed to the thermal population from the lower I9/24 state, gradually takes a dominant place.
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20
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Qiang Q, Wang Y. Effect of Mn 2+ on Upconversion Emission, Thermal Sensing and Optical Heater Behavior of Yb 3+ - Er 3+ Codoped NaGdF 4 Nanophosphors. Front Chem 2019; 7:425. [PMID: 31245360 PMCID: PMC6562558 DOI: 10.3389/fchem.2019.00425] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Accepted: 05/22/2019] [Indexed: 01/19/2023] Open
Abstract
In thiswork, we investigate the influence of Mn2+ on the emission color, thermal sensing and optical heater behavior of NaGdF4: Yb/Er nanophosphors, which the nanoparticles were synthesized by a hydrothermal method using oleic acid as both a stabilizing and a chelating agent. The morphology and crystal size of upconversion nano particles (UCNPs) can be effectively controlled through the addition of Mn2+ dopant contents in NaGdF4: Yb/Er system. Moreover, an enhancement in overall UCL spectra of Mn2+ doped UCNPs for NaGdF4 host compared to the UCNPs is observed, which results from a closed back-energy transfer between Er3+ and Mn2+ ions (4S3/2 (Er3+) → 4T1 (Mn2+) → 4F9/2 (Er3+)). The temperature sensitivity of NaGdF4:Yb3+/Er3+ doping with Mn2+ based on thermally coupled levels (2H11/2 and 4S3/2) of Er3+ is similar to that particles without Mn2+ in the 303-548 K range. And the maximum sensitivity is 0.0043 K-1 at 523 K for NaGdF4:Yb3+/Er3+/Mn2+. Interestingly, the NaGdF4:Yb3+/Er3+/Mn2+ shows preferable optical heating behavior, which is reaching a large value of 50 K. These results indicate that inducing of Mn2+ ions in NaGdF4:Yb3+/Er3+ nanophosphors has potential in colorful display, temperature sensor.
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Affiliation(s)
- Qinping Qiang
- Department of Materials Science, School of Physical Science and Technology, Lanzhou University, Lanzhou, China
- Key Laboratory for Special Function Materials and Structural Design of the Ministry of Education, Lanzhou University, Lanzhou, China
| | - Yuhua Wang
- Department of Materials Science, School of Physical Science and Technology, Lanzhou University, Lanzhou, China
- Key Laboratory for Special Function Materials and Structural Design of the Ministry of Education, Lanzhou University, Lanzhou, China
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21
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Jin Y, Pang T. Highly efficient green upconversion luminescence of ZnMoO 4:Yb 3+/Er 3+/Li + for accurate temperature sensing. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 211:306-312. [PMID: 30576965 DOI: 10.1016/j.saa.2018.12.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 11/19/2018] [Accepted: 12/09/2018] [Indexed: 06/09/2023]
Abstract
Upconversion luminescence and optical temperature sensing properties of Yb3+/Er3+/Li+ tri-doped ZnMoO4 phosphors were investigated. It has been demonstrated that Li+ doping affected not only the local symmetry of Yb3+ and Er3+ but also the distribution of them in the host lattice. As a result, the significantly improved green upconversion luminescence was obtained when excited at 980 nm. The pumping power dependent photo-thermal behavior was used to evaluate the reliability of upconversion temperature sensing. An accurate temperature scale was established by eliminating the impact of thermal effect, and the sensing ability was evaluated via a comparison with the results reported in literatures.
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Affiliation(s)
- Yichen Jin
- College of science, Huzhou University, Zhejiang, Huzhou 313000, China
| | - Tao Pang
- College of science, Huzhou University, Zhejiang, Huzhou 313000, China.
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22
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Li L, Qin F, Zhou Y, Zhang Z. Comprehensive Study on the Combined Effect of Laser-Induced Heating and Laser Power Dependence on Luminescence Ratiometric Thermometry. ACS OMEGA 2019; 4:3646-3652. [PMID: 31459577 PMCID: PMC6648581 DOI: 10.1021/acsomega.8b02974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Accepted: 01/21/2019] [Indexed: 06/10/2023]
Abstract
Luminescence ratiometric thermometry, on the basis of nonthermally linked states of lanthanides, became a hot research issue recently because of its several attractive features. Here, the 5F4,5S2/5F5-5I8 transitions of Ho3+ embedded in calcium tungstate host are taken as an example to show the influence of laser pump power on this temperature detection technology. The luminescence intensity ratio between the 5F4,5S2/5F5-5I8 upconversion emission lines was found to respond monotonously to the temperature between 303 and 603 K and could be fitted well with the use of an empirical function. It suggested that this ratio might be suitable for temperature measurement. However, at 303 K, the temperature readout derived from this ratio decreased from 303 to 248 K on increasing the laser pump power from 35 to 205 mW (the irradiated spot's area: ca. 2 mm2). This uncommon phenomenon differs from the conventional laser-induced heating effect. With the help of the Boltzmann distribution based on the two Stark components of the 5F5 state of Ho3+, the laser-induced heating was calculated to be ca. 20 K when the excitation power was 205 mW. Thus, this suggested that there should be a mechanism responsible for the gradually decreasing temperature readout. It was then confirmed that this mechanism was the different dependences for the 5F4,5S2/5F5-5I8 transitions on laser pump power, which was much stronger than the laser-induced heating effect. A calibration method to eliminate the influence of laser power dependence on luminescence ratiometric thermometry was then proposed.
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23
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Lakhotiya H, Nazir A, Roesgaard S, Eriksen E, Christiansen J, Bondesgaard M, van Veggel FCJM, Iversen BB, Balling P, Julsgaard B. Resonant Plasmon-Enhanced Upconversion in Monolayers of Core-Shell Nanocrystals: Role of Shell Thickness. ACS APPLIED MATERIALS & INTERFACES 2019; 11:1209-1218. [PMID: 30525411 DOI: 10.1021/acsami.8b15564] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The upconversion luminescence (UCL) of colloidal lanthanide-doped upconversion nanocrystals (UCNCs) can be improved either by precise encapsulation of the surface by optically inert shells around the core, by an alteration of the nearby environment via metal nanoparticles, or by a combination of both. Considering their potential importance in crystalline silicon photovoltaics, the present study investigates both effects for two-dimensional arrangements of UCNCs. Using excitation light of 1500 nm wavelength, we study the variation in the upconversion luminescence from an Er3+-doped NaYF4 core as a function of the thickness of a NaLuF4 shell in colloidal solutions as well as in spin-cast-assisted self-assembled monolayers of UCNCs. The observed UCL yields and decay times of Er3+ ions of the UCNCs increase with increasing shell thickness in both cases, and nearly no variation in decay times is observed in the transition of the UCNCs from solution to film configurations. The luminescence efficiency of the UCNC monolayers is further enhanced by electron-beam-lithographic-designed Au nanodiscs deposited either on top of or buried within the monolayer. It is observed that the improvement by the nanocrystal shells is greater than that of the Au nanodiscs.
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Affiliation(s)
- Harish Lakhotiya
- Department of Physics and Astronomy , Aarhus University , DK-8000 Aarhus C , Denmark
| | - Adnan Nazir
- Department of Physics and Astronomy , Aarhus University , DK-8000 Aarhus C , Denmark
| | - Søren Roesgaard
- Department of Physics and Astronomy , Aarhus University , DK-8000 Aarhus C , Denmark
| | - Emil Eriksen
- Department of Physics and Astronomy , Aarhus University , DK-8000 Aarhus C , Denmark
| | - Jeppe Christiansen
- Department of Physics and Astronomy , Aarhus University , DK-8000 Aarhus C , Denmark
| | - Martin Bondesgaard
- Department of Chemistry , Aarhus University , DK-8000 Aarhus C , Denmark
| | - Frank C J M van Veggel
- Department of Chemistry , University of Victoria , Victoria , British Columbia V8W 2Y2 , Canada
| | - Bo Brummerstedt Iversen
- Department of Chemistry , Aarhus University , DK-8000 Aarhus C , Denmark
- Interdisciplinary Nanoscience Center (iNANO) , Aarhus University , DK-8000 Aarhus C , Denmark
| | - Peter Balling
- Department of Physics and Astronomy , Aarhus University , DK-8000 Aarhus C , Denmark
- Interdisciplinary Nanoscience Center (iNANO) , Aarhus University , DK-8000 Aarhus C , Denmark
| | - Brian Julsgaard
- Department of Physics and Astronomy , Aarhus University , DK-8000 Aarhus C , Denmark
- Interdisciplinary Nanoscience Center (iNANO) , Aarhus University , DK-8000 Aarhus C , Denmark
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24
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Li L, Qin F, Zhang Z. A non-invasive luminescent nano-thermometer: approaching the maximum thermal sensitivity of Er3+ ion's green emission. CrystEngComm 2019. [DOI: 10.1039/c9ce00285e] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The maximum relative thermal sensitivity for the green luminescence of the Er3+ ion is reported.
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Affiliation(s)
- Leipeng Li
- Department of Physics
- Harbin Institute of Technology
- Harbin
- P. R. China
| | - Feng Qin
- Condensed Matter Science and Technology Institute
- School of Instrumentation Science and Engineering
- Harbin Institute of Technology
- Harbin
- P. R. China
| | - Zhiguo Zhang
- Condensed Matter Science and Technology Institute
- School of Instrumentation Science and Engineering
- Harbin Institute of Technology
- Harbin
- P. R. China
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25
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Li L, Qi X, Qin F, Li L, Gao H, Zheng Y, Zhang Z. Highly sensitive optical ratiometric thermometry by exciting Eu3+/Tb3+'s unusual absorption lines. Phys Chem Chem Phys 2019; 21:24308-24315. [DOI: 10.1039/c9cp04094c] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A highly sensitive optical ratiometric thermometry is reported here by exciting Eu3+/Tb3+'s unusual absorption lines.
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Affiliation(s)
- Leipeng Li
- School of Physics
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Xudong Qi
- School of Physics
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Feng Qin
- School of Instrumentation Science and Engineering
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Lu Li
- Key Laboratory for Photonic and Electronic Bandgap Materials
- Ministry of Education
- School of Physics and Electronic Engineering
- Harbin Normal University
- Harbin 150025
| | - Hong Gao
- Key Laboratory for Photonic and Electronic Bandgap Materials
- Ministry of Education
- School of Physics and Electronic Engineering
- Harbin Normal University
- Harbin 150025
| | - Yangdong Zheng
- School of Physics
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Zhiguo Zhang
- School of Physics
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
- School of Instrumentation Science and Engineering
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26
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Pang T, Peng W, Yang M, Xie J, Lu W. Synthesis, upconversion luminescence and optical heating of hexagonal NaGdF4:Yb3+,Er3+. J RARE EARTH 2018. [DOI: 10.1016/j.jre.2018.04.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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27
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Lanevski D, Mauring K, Tkaczyk ER, Jaaniso R. Optical differential temperature measurement with beat frequency phase fluorometry. APPLIED OPTICS 2018; 57:8053-8059. [PMID: 30462078 PMCID: PMC6858842 DOI: 10.1364/ao.57.008053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 08/15/2018] [Indexed: 06/09/2023]
Abstract
We present, to the best of our knowledge, a new method for differential temperature measurement based on thermal sensitivity of the fluorescence lifetime of thermographic phosphors. Pairs of thermographic phosphors are excited with intensity-modulated light at frequencies ω and ω+Δω. The phase shift Δθ of the summary fluorescence intensity beat signal envelope is measured. A prototype of a fluorometric differential temperature sensor is developed, and feasibility of the method is experimentally demonstrated with a Sm2+:SrFCl crystal and the D15->F70 transition for high thermal sensitivity. The observed linear dependence between envelope phase shift Δθ and temperature difference ΔT agrees with the theoretical prediction. Sensitivity of S=-0.97°/°C was achieved. This method could also be applied to differential measurements of any parameter affecting fluorescence lifetime.
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Affiliation(s)
- Dmitri Lanevski
- Institute of Physics, University of Tartu, W.Ostwald St 1, Tartu EE50411, Estonia
| | - Koit Mauring
- Institute of Physics, University of Tartu, W.Ostwald St 1, Tartu EE50411, Estonia
| | - Eric R Tkaczyk
- Department of Dermatology, Vanderbilt University Medical Center, One Hundred Oaks Suite 26300, 719 Thompson Lane, Nashville, Tennessee 37204, USA
- Department of Biomedical Engineering, Vanderbilt University, 2301 Vanderbilt Place, Nashville,Tennessee 37235, USA
- Dermatology Service, Department of Veterans Affairs Tennessee Valley Healthcare System, 1310 24th Ave S, Nashville, TN 37212, USA
| | - Raivo Jaaniso
- Institute of Physics, University of Tartu, W.Ostwald St 1, Tartu EE50411, Estonia
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28
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Labrador-Páez L, Ximendes EC, Rodríguez-Sevilla P, Ortgies DH, Rocha U, Jacinto C, Martín Rodríguez E, Haro-González P, Jaque D. Core-shell rare-earth-doped nanostructures in biomedicine. NANOSCALE 2018; 10:12935-12956. [PMID: 29953157 DOI: 10.1039/c8nr02307g] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The current status of the use of core-shell rare-earth-doped nanoparticles in biomedical applications is reviewed in detail. The different core-shell rare-earth-doped nanoparticles developed so far are described and the most relevant examples of their application in imaging, sensing, and therapy are summarized. In addition, the advantages and disadvantages they present are discussed. Finally, a critical opinion of their potential application in real life biomedicine is given.
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Affiliation(s)
- Lucía Labrador-Páez
- Fluorescence Imaging Group, Departamento de Física de Materiales, Facultad de Ciencias, Universidad Autónoma de Madrid, C/Francisco Tomás y Valiente 7, 28049 Madrid, Spain.
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29
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Up-conversion luminescence, temperature sensing properties and laser-induced heating effect of Er 3+/Yb 3+ co-doped YNbO 4 phosphors under 1550 nm excitation. Sci Rep 2018; 8:5736. [PMID: 29636498 PMCID: PMC5893635 DOI: 10.1038/s41598-018-23981-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 03/23/2018] [Indexed: 12/17/2022] Open
Abstract
YNbO4 phosphors with various Er3+ and Yb3+ concentrations were synthesized via a traditional high-temperature solid-state reaction method. Their crystal structure was investigated by means of X-ray diffraction (XRD) and Rietveld refinements, and it was confirmed that the obtained samples exist in monoclinic phase. The Er3+ and Yb3+ concentration-dependent up-conversion (UC) luminescence was studied under 1550 nm excitation. By inspecting the dependence of UC intensity on the laser working current, it was found that four-photon and three-photon population processes were co-existent for generating the green UC emissions in the samples with higher Yb3+ concentrations. In addition, it was observed that the temperature sensing properties of YNbO4: Er3+/Yb3+ phosphors were sensitive to both Er3+ and Yb3+ doping concentrations. Furthermore, based on the obtained temperature response of the UC luminescence phosphors, 1550 nm laser-irradiation-induced thermal effect was studied, and it was discovered that the sample temperature was very sensitive to the doping concentrations of Er3+ and Yb3+ and the excitation power.
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30
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Malik M, Padhye P, Poddar P. Graphene Quantum Dots-Driven Multiform Morphologies of β-NaYF 4:Gd 3+/Tb 3+ Phosphors: The Underlying Mechanism and Their Optical Properties. ACS OMEGA 2018; 3:1834-1849. [PMID: 31458496 PMCID: PMC6641316 DOI: 10.1021/acsomega.7b01947] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 01/22/2018] [Indexed: 05/30/2023]
Abstract
Dimension and shape tunable architectures of inorganic crystals are of extreme interest because of morphology-dependent modulation of the properties of the materials. Herein, for the first time, we present a novel impurity-driven strategy where we studied the influence of in situ incorporation of graphene quantum dots (GQDs) on the growth of β-NaYF4:Gd3+/Tb3+ phosphor crystals via a hydrothermal route. The GQDs function as a nucleation site and by changing the concentration of GQDs, the morphology of β-NaYF4:Gd3+/Tb3+ phosphors was changed from rod to flowerlike structure to disklike structure, without phase transformation. The influence of size and functionalization of GQDs on the size and shape of phosphor crystals were also systematically studied and discussed. Plausible mechanisms of formation of multiform morphologies are proposed based on the heterogeneous nucleation and growth. Most interestingly, the experimental results indicate that the photoluminescence properties of β-NaYF4:Gd3+/Tb3+ phosphor crystals are strongly dependent on the crystallite size and morphology. This study would be suggestive for the precisely controlled growth of inorganic crystals; consequently, it will open new avenues and thus may possess potential applications in the field of materials and biological sciences.
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Affiliation(s)
- Monika Malik
- Physical
& Materials Chemistry Division, CSIR-National
Chemical Laboratory, Pune 411 008, India
- Academy
of Scientific and Innovative Research (AcSIR), Anusandhan Bhawan, 2 Rafi Marg, New Delhi 110 001, India
| | - Preeti Padhye
- Physical
& Materials Chemistry Division, CSIR-National
Chemical Laboratory, Pune 411 008, India
- Academy
of Scientific and Innovative Research (AcSIR), Anusandhan Bhawan, 2 Rafi Marg, New Delhi 110 001, India
| | - Pankaj Poddar
- Physical
& Materials Chemistry Division, CSIR-National
Chemical Laboratory, Pune 411 008, India
- Academy
of Scientific and Innovative Research (AcSIR), Anusandhan Bhawan, 2 Rafi Marg, New Delhi 110 001, India
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31
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Shao Q, Yang Z, Zhang G, Hu Y, Dong Y, Jiang J. Multifunctional Lanthanide-Doped Core/Shell Nanoparticles: Integration of Upconversion Luminescence, Temperature Sensing, and Photothermal Conversion Properties. ACS OMEGA 2018; 3:188-197. [PMID: 31457887 PMCID: PMC6641233 DOI: 10.1021/acsomega.7b01581] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 12/25/2017] [Indexed: 05/29/2023]
Abstract
Multifunctional integration on single upconversion nanoparticles (UCNPs), such as the simultaneous achievement of imaging, sensing, and therapy, will be extremely attractive in various application fields. Herein, we demonstrated that single core/shell NaGdF4:Yb/Er-based UCNPs (<10 nm) with a highly Yb3+ or Nd3+ doped shell simultaneously exhibited good upconversion luminescence (UCL), temperature sensing, and photothermal conversion properties under 980 or 808 nm excitation, respectively. The spatial separation between the emission/sensing core and the heating shell was able to tailor the competition between the light and heat generation processes, and hence higher UCL efficiency and enhanced heating capability were achieved by introducing the rational core/shell design. Especially, Nd3+-sensitized core/shell nanoparticles were excitable to the laser at a more biocompatible wavelength of 808 nm, and hence the heating effect of water was greatly minimized. The heating and sensing capabilities of Nd3+-sensitized core/shell UCNPs with smaller sizes (<10 nm) were confirmed in aqueous environment under single 808 nm laser excitation, implying their promising applications in imaging-guided and temperature-monitored photothermal treatments.
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Affiliation(s)
- Qiyue Shao
- School of Materials Science
and Engineering, Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing 211189, P. R.
China
| | - Zhaochun Yang
- School of Materials Science
and Engineering, Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing 211189, P. R.
China
| | - Gongtuo Zhang
- School of Materials Science
and Engineering, Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing 211189, P. R.
China
| | - Yanqing Hu
- School of Materials Science
and Engineering, Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing 211189, P. R.
China
| | - Yan Dong
- School of Materials Science
and Engineering, Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing 211189, P. R.
China
| | - Jianqing Jiang
- School of Materials Science
and Engineering, Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing 211189, P. R.
China
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32
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Li L, Zhou Y, Qin F, Zheng Y, Zhao H, Zhang Z. Relative sensitivity variation law in the field of fluorescence intensity ratio thermometry. OPTICS LETTERS 2018; 43:186-189. [PMID: 29328234 DOI: 10.1364/ol.43.000186] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 12/04/2017] [Indexed: 06/07/2023]
Abstract
We study the variation law of relative sensitivity in the field of fluorescence intensity ratio thermometry. It is theoretically demonstrated that there must be only one maximum value of relative sensitivity in the case in which there is a positive offset in fitting function. Moreover, the method to obtain this maximum is proposed. Experimental results, taking the D15/D50 levels of Eu3+ as examples, are in excellent accordance with the conclusion. The mechanism behind is then investigated, and other populating processes imposed on the D15 level, which exert negative outcome on thermal sensitivity, are found to play a key role in determination of this unique variation law.
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Li L, Zhou Y, Qin F, Zheng Y, Zhao H, Zhang Z. Modified calculation method of relative sensitivity for fluorescence intensity ratio thermometry. OPTICS LETTERS 2017; 42:4837-4840. [PMID: 29216140 DOI: 10.1364/ol.42.004837] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 10/30/2017] [Indexed: 06/07/2023]
Abstract
The calculation method of relative sensitivity (Sr) for fluorescence intensity ratio (FIR) thermometry is discussed, taking the F33-H63 and H43-H63 transitions of Tm3+ as examples. The value of Sr is calculated using its original definition, and is found to largely deviate from the result obtained using the conventional method that is widely used at present. This deviation is found to stem from the neglect of an offset. A modified expression of Sr is proposed, which shows the true performance of FIR technology and makes it possible to precisely compare the Sr values obtained using various methods.
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