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Liu J, Yang C, Qu S, Xiao R, Lv X, Chen S, Guo N. Genesis of temperature-driven red-shift of charge transfer band edge for Sm 3+-doped vanadate self-activated phosphor. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 305:123560. [PMID: 37879267 DOI: 10.1016/j.saa.2023.123560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 10/11/2023] [Accepted: 10/16/2023] [Indexed: 10/27/2023]
Abstract
The temperature-driven redshift of the charge transfer band (CTB) exhibits promising potential for optical temperature sensing as well as for the design of anti-thermal quenching phosphors. Therefore, it is essential to investigate the displacement mechanism in detail. In this contribution, we created LiCa2.95MV3O12:5%Sm3+ (M = Mg/Zn) phosphors with considerably red-shifted CTB edges upon temperature stimulation and outstanding anti-thermal quenching behavior. To investigate this unusual behavior, gaussian fitting was performed on the excitation spectra and emission spectra at different temperatures to investigate the redshift mechanism. By averaging the peak energy of the lowest excitation and emission peaks, the zero phonon line (Ezp) indicating the electronic energy level location of the charge transfer state (CTS) shows a downward trend is obtained. As well as the energy reduction of the 1A2(1T1)-1B1(1T2) and 1E(1T1)-1B1(1T2) absorption bands in the [VO4]3- group is observed. Therefore, the drop in the CTS electronic energy level is the dominant factor in the temperature-driven CTB redshift. Based on the redshift phenomenon and anti-thermal quenching phenomenon of CTB, the phosphor exhibited exceptional optical temperature measurement performance in all three thermometry modes of excitation intensity ratio (EIR), International Committee on Illumination (CIE) color coordinates, and fluorescence intensity ratio (FIR), demonstrating its broad application prospects in the field of optical temperature sensing as well as guiding the design of anti-thermal quenching phosphors.
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Affiliation(s)
- Jianxia Liu
- Department of Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Chunwei Yang
- Department of Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Song Qu
- Department of Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Ran Xiao
- Department of Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Xiang Lv
- Department of Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Shunyi Chen
- Department of Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Ning Guo
- Department of Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China.
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2
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Chauhan V, Dixit P, Pandey PK, Chaturvedi S, Pandey PC. Emission color tuning and dual-mode luminescence thermometry design in Dy 3+/Eu 3+co-doped SrMoO 4phosphors. Methods Appl Fluoresc 2023; 12:015002. [PMID: 37703890 DOI: 10.1088/2050-6120/acf97b] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 09/13/2023] [Indexed: 09/15/2023]
Abstract
The challenge of building a highly reliable contactless temperature probe with high sensitivity, good temperature-induced color discriminability, and economical synthesis has prompted the research community to work in the field of rare-earth-based luminescence thermometry. Moreover, the fast-growing market for optoelectronic devices has increased the demand for tunable color-emitting phosphors. In this study, Dy3+/Eu3+co-doped SrMoO4phosphors were developed as tunable color-emitting source and dual-mode luminescence thermometer. A facile and cost-effective auto-combustion method was used to synthesize the phosphors. Our work demonstrates a viable scheme for tailoring the emission of single-phase phosphors by precisely controlling the dopant concentrations and by modulating excitation wavelength. The overall emission is tuned from greenish-yellow to white and greenish-yellow to reddish-orange. A detailed energy transfer process from the host to the Ln3+ions and between the Ln3+ions is discussed. Further, anti-thermal quenching in the emission of Dy3+ion is observed when excited with 297 nm. The dual-mode luminescence thermometry has been studied by analyzing the fluorescence intensity ratio of Dy3+and Eu3+ions upon excitation at 297 nm. The maximum relative sensitivity value for 4% Eu3+co-doped SrMoO4:4%Dy3+phosphor is 1.46% K-1at 300 K. Furthermore, the configurational coordinate diagram is presented to elucidate the nature of temperature-dependent emission. Therefore, our research opens up new avenues for the development of color-tunable luminescent materials for various optoelectronic and temperature-sensing applications.
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Affiliation(s)
- Vaibhav Chauhan
- Department of Physics, Indian Institute of Technology (Banaras Hindu University), Varanasi-221005, U.P., India
| | - Prashant Dixit
- Department of Physics, Indian Institute of Technology (Banaras Hindu University), Varanasi-221005, U.P., India
- Department of Basic Science and Humanities, Maharana Pratap Engineering College (Affiliated to Abdul Kalam Technical University, Lucknow), Kanpur, U.P., India
| | - Prashant Kumar Pandey
- Department of Physics, Indian Institute of Technology (Banaras Hindu University), Varanasi-221005, U.P., India
| | - Satyam Chaturvedi
- Department of Physics, Indian Institute of Technology (Banaras Hindu University), Varanasi-221005, U.P., India
| | - Praveen C Pandey
- Department of Physics, Indian Institute of Technology (Banaras Hindu University), Varanasi-221005, U.P., India
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3
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Ma Z, Liu H, Xie S, Zeng Q, Guo Y, Wen D. Near-UV excited multifunctional near-infrared phosphors for anti-counterfeiting and ratiometric thermometer applications. Dalton Trans 2023; 52:1650-1656. [PMID: 36648339 DOI: 10.1039/d2dt03871d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Considerable efforts have been devoted to the development of visible light-emitting phosphors for anti-counterfeiting application, but the design of multifunctional near-infrared materials with suitable luminescent properties was lacking. Based on the crystal field theory, a near ultraviolet excitable and near-infrared emitting Ca2Sn2(1-x)Al2(1-x)O9:2xCr3+,2xSi4+ phosphor was designed. On the one hand, the Ca2Sn2(1-x)Al2(1-x)O9:2xCr3+,2xSi4+ phosphor showed great potential for applications including anti-counterfeiting and secret signals under a 405 nm near UV laser. The integrated intensity at 150 °C was 75.9%, implying high thermal stability when irradiated with a high power light source. On the other hand, an unexpected red emission component originating from the Cr3+-Cr3+ dimer was observed and was confirmed by fast luminescence decay and electron spin resonance signals. The different thermal stabilities of Cr3+ near-infrared and Cr3+-Cr3+ red emissions opened up a new opportunity for luminescence ratiometric thermometers.
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Affiliation(s)
- Zhe Ma
- School of Applied Physics and Materials, Wuyi University, Jiangmen, Guangdong, 529020, P. R. China.
| | - Hongmin Liu
- School of Applied Physics and Materials, Wuyi University, Jiangmen, Guangdong, 529020, P. R. China.
| | - Siyuan Xie
- School of Applied Physics and Materials, Wuyi University, Jiangmen, Guangdong, 529020, P. R. China.
| | - Qingguang Zeng
- School of Applied Physics and Materials, Wuyi University, Jiangmen, Guangdong, 529020, P. R. China.
| | - Yue Guo
- School of Applied Physics and Materials, Wuyi University, Jiangmen, Guangdong, 529020, P. R. China.
| | - Dawei Wen
- School of Applied Physics and Materials, Wuyi University, Jiangmen, Guangdong, 529020, P. R. China.
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4
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Shi X, Xue Y, Mao Q, Pei L, Li X, Liu M, Zhang Q, Zhong J. Eu 3+ Single-Doped Phosphor with Antithermal Quenching Behavior and Multicolor-Tunable Properties for Luminescence Thermometry. Inorg Chem 2023; 62:893-903. [PMID: 36599618 DOI: 10.1021/acs.inorgchem.2c03699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
To date, non-contact luminescence thermometry methods based on fluorescence intensity ratio (FIR) technology have been studied extensively. However, designing phosphors with high relative sensitivity (Sr) has become a research hotspot. In this work, Eu3+ single-doped Ca2Sb2O7:Eu3+ phosphors with a high Sr value for dual-emitting-center luminescence thermometry are developed and proposed. The anti-thermal quenching behavior of Eu3+ originating from the energy transfer (ET) of host → Eu3+ is found and proved in the designed phosphors. Interestingly, adjustable color emission from blue to orange can be achieved. Surprisingly, the degree of the anti-thermal quenching behavior of Eu3+ gradually reduces from 240 to 127% as the Eu3+ doping content increases from 0.005 to 0.05 mol, attributed to most Eu3+ being located in the low symmetrical [Ca1O8] dodecahedral site. According to the differentiable responses of the host and Eu3+ to temperature, the maximal Sr value reaches 3.369% K-1 (383 K). Moreover, the ambient temperature can be intuitively predicted by observing the emitting color. Owing to the excellent performance in optical thermometry, color-tunable properties, and outstanding acid and alkali resistance for polydimethylsiloxane (PDMS) films, the developed Eu3+ single-doped Ca2Sb2O7:Eu3+ phosphors are expected to be prospective candidates in luminescence thermometers and LED devices in various conditions.
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Affiliation(s)
- Xinyang Shi
- Center of Advanced Optoelectronic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou310018, China
| | - Yu Xue
- Center of Advanced Optoelectronic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou310018, China
| | - Qinan Mao
- Center of Advanced Optoelectronic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou310018, China
| | - Lang Pei
- Center of Advanced Optoelectronic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou310018, China
| | - Xinyue Li
- Center of Advanced Optoelectronic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou310018, China
| | - Meijiao Liu
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou310018, China
| | - Qi Zhang
- Center of Advanced Optoelectronic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou310018, China
| | - Jiasong Zhong
- Center of Advanced Optoelectronic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou310018, China
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Liu W, Zhao D, Zhang RJ, Yao QX, Zhu SY. Fluorescence Lifetime-Based Luminescent Thermometry Material with Lifetime Varying over a Factor of 50. Inorg Chem 2022; 61:16468-16476. [PMID: 36197311 DOI: 10.1021/acs.inorgchem.2c02707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Recently, the growing demand for temperature detection is pushing forward the flourishing development of noncontact optical thermometry. Herein, a new red phosphor Sr2InTa1-xO6:xMn4+ (SIT:xMn4+) was first constructed and systematically investigated. Based on the fairly rapid decline of the lifetime from 0.403 to 0.008 ms by increasing the temperature from 25 to 450 K, a noncontact optical thermometer can be made from phosphor SIT:0.003Mn4+ with Sr = 1.396% K-1 at 375 K and Sa = 0.0012 K-1 at 300 K. Because the luminescence is based on the outermost 3d orbits of Mn4+, the lifetime of SIT:xMn4+ is quite sensitive to the temperature, leading to a rapid decline of the lifetime with the increase in temperature. Moreover, multiple rounds of variable-temperature studies were performed to demonstrate the stability and reversibility of SIT:0.003Mn4+. This work suggests that Mn4+-phosphors are promising candidates for application as optical thermometric material.
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Affiliation(s)
- Wen Liu
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo454000, Henan, China
| | - Dan Zhao
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo454000, Henan, China.,State Key Laboratory of Structural Chemistry, Fuzhou350002, Fujian, China
| | - Rui-Juan Zhang
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo454000, Henan, China
| | - Qing-Xia Yao
- School of Chemistry and Chemical Engineering, Shandong Provincial Key Laboratory/Collaborative Innovation Center of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, Liaocheng252000, Shandong, China
| | - Shuang-Yin Zhu
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo454000, Henan, China
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6
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Xu Z, Zhu Q, Li X, Sun X, Li JG. Systematic Crystallization of NH 4Ln(MoO 4) 2 as a Family of Layered Compounds (Ln = La-Lu and Y), Derivation of Ln 2Mo 4O 15, Crystal Structure, and Photoluminescence. Inorg Chem 2022; 61:15116-15129. [PMID: 36094380 DOI: 10.1021/acs.inorgchem.2c02236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
NH4Ln(MoO4)2 (Ln = La-Lu lanthanide, Y) was crystallized via hydrothermal reaction as a new family of layered materials, from which phase-pure Ln2Mo4O15 was successfully derived via subsequent annealing at 700 °C for the series of Ln elements excluding Ce and Lu. Detailed structure analysis revealed that the ionic size of Ln3+ decisively determined the crystal structure and Mo/Ln coordination for the two families of compounds. NH4Ln(MoO4)2 was analyzed to be orthorhombic (Pbcn space group, no. 60) and monoclinic (P2/c, no. 13) for the larger and smaller Ln3+ of Ln = La-Gd and Ln = Tb-Lu (including Y), respectively, where both the crystal structures have a layered topology featured by the alternative stacking of a [Ln(MoO4)2]- three-tier infinite anionic layer and interlayer NH4+. Four types of crystal structures were found for the Ln2Mo4O15 series, which are monoclinic (P21/a, no. 14) for Ln = La, triclinic (P1̅, no. 2) for Ln = Pr-Sm, triclinic (P1̅, no. 2) for Ln = Eu and Gd, and monoclinic (P21/c, no. 14) for Ln = Tb-Yb (including Y). The photoluminescence of NH4Ln(MoO4)2 (Ln = Eu, Tb) and Ln2Mo4O15:Eu3+ (Ln = La, Gd, Y) was thoroughly investigated in terms of spectral features, quantum efficiency, fluorescence decay, and CIE chromaticity. The thermal stability of luminescence was also studied for Ln2Mo4O15:Eu3+, and the observed charge-transfer excitation components were successfully correlated with the features of the Mo-O polyhedron/unit.
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Affiliation(s)
- Zhixin Xu
- Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Materials Science and Engineering, Northeastern University, Shenyang, Liaoning 110819, China.,Research Center for Functional Materials, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Qi Zhu
- Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Materials Science and Engineering, Northeastern University, Shenyang, Liaoning 110819, China
| | - Xiaodong Li
- Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Materials Science and Engineering, Northeastern University, Shenyang, Liaoning 110819, China
| | - Xudong Sun
- Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Materials Science and Engineering, Northeastern University, Shenyang, Liaoning 110819, China.,Foshan Graduate School of Northeastern University, Foshan, Guangdong 528311, China
| | - Ji-Guang Li
- Research Center for Functional Materials, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
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Cao R, Zheng Y, Chen T, Lan B, Li L, Zhong Q, Nie S, Wang J. Synthesis and tunable emission from yellow-green to red-orange of Ca3MgSi2O8:Eu3+, Dy3+ phosphor. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133008] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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8
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Zhu M, Ma Q, Guo N. Optical thermometry based on europium doped self-activated dual-emitting LiCa 3ZnV 3O 12 phosphor. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 271:120922. [PMID: 35101721 DOI: 10.1016/j.saa.2022.120922] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 01/14/2022] [Accepted: 01/17/2022] [Indexed: 06/14/2023]
Abstract
In this study, rare-earth-doped self-activated LiCa3ZnV3O12 (LCZV) vanadate phosphors were preparation by a high-temperature solid-state reaction. Their crystal structure, non-contact temperature sensing, and luminescence properties were studied deeply. Excited by ultraviolet light at 340 nm, the emission of [VO4]3- group and the Eu3+ ions were monitored. The highest strength emission peaks at 470 nm and 610 nm for [VO4]3- and Eu3+, respectively, provide favorable signal identification for estimating temperature. Due to thermal quenching behavior and energy transfer, the FIR (Fluorescence Intensity Ratio) from Eu3+ to [VO4]3- exhibits excellent sensitivity performance at 303 K - 523 K. In the meantime, the maximum absolute and relative sensitivities of the obtained phosphors are 0.0068 K-1 and 1.18 % K-1, which are overtopped to those reported previously. Furthermore, for the luminescent color of the CIE diagram with a strong temperature effect, the color coordinate could be verified from (0.2871, 0.3416) to (0.4121, 0.3420), which was matched well with the linear equation. Consequently, the Eu3+ doped LCZV phosphor not only can be used for high-temperature environmental safety signals but also is an extraordinary viable material in the field of optical sensing.
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Affiliation(s)
- Miaomiao Zhu
- Department of Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Qincan Ma
- Department of Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Ning Guo
- Department of Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China.
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9
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Zhao D, Liu W, Li YN, Zhang RJ, Zhang LN. (3+1)-Dimensional Modulated Structure and Tb 3+-Doped Luminescence for Vanadate Na 3La(VO 4) 2. Inorg Chem 2022; 61:6311-6318. [PMID: 35413195 DOI: 10.1021/acs.inorgchem.2c00587] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A modulated structure with symmetrical characteristic higher than three-dimensional is a fascinating crystallographic type, and it is randomly encountered by researchers. Herein, we prepared 0.1 mm level single crystals of Na3La(VO4)2 and determined its structure to be a (3 + 1)-dimensional modulated structure using the X-ray diffraction analysis method for single crystals. Its super space group was determined to be Pca21(0β0)000. On the other hand, we introduced Tb3+ into the Na3La(VO4)2 host lattice to fabricate phosphors Na3La1-x(VO4)2:xTb3+ and studied their photoluminescence properties. Interestingly, for the strong absorption of the Na3La(VO4)2 host lattice in the range of 200-400 nm, the traditional 330-385 nm light is unable to efficiently excite Tb3+ ions in the Na3La(VO4)2 host to generate luminescence of Tb3+. Instead, Na3La1-x(VO4)2:xTb3+ is suitable to be excited by 487 nm to generate emitting light at 543, 584, and 622 nm, due to Tb3+ characteristic 4f → 4f transitions of 5D4 → 7FJ (J = 5, 4, 3). Hence, the Tb3+-doped Na3La(VO4)2 phosphors have potential applications for white-light-emitting diodes.
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Affiliation(s)
- Dan Zhao
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China.,State Key Laboratory of Structural Chemistry, Fuzhou, Fujian 350002, China
| | - Wen Liu
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China
| | - Ya-Nan Li
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China
| | - Rui-Juan Zhang
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China
| | - Li-Na Zhang
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China
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Kachou I, Saidi K, Salhi R, Dammak M. Synthesis and optical spectroscopy of Na 3Y(VO 4) 2:Eu 3+ phosphors for thermometry and display applications. RSC Adv 2022; 12:7529-7539. [PMID: 35424657 PMCID: PMC8982340 DOI: 10.1039/d2ra00539e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 03/02/2022] [Indexed: 01/26/2023] Open
Abstract
A new Na3Y(VO4)2:Eu3+ (NYVO:Eu3+) phosphor was prepared using the sol-gel method. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to evaluate phase purity and particle size, respectively. The optical properties were investigated by UV-visible absorption, PL, and PLE spectroscopies. The absorption measurements show the formation of the vanadate host by the presence of its characteristic band in the visible region related to VO4 3- groups. The experimental results show that the NYVO:Eu3+ phosphors exhibit high-brightness and thermally stable emission. Under near-ultraviolet (UV) excitation, both the broadband emission from VO4 3- groups and the sharp peak emissions from Eu3+ ions are observed. The highest luminescence intensity was achieved for an optimal europium concentration of 15 mol%. The study of the chromaticity parameters of these compounds gives a thermally stable hot emission in the red domain, with a color purity of about 85%, which qualifies the NYVO:Eu3+ compound as a potential phosphor for light-emitting diode (LED) applications. Thermal sensing using NYVO:Eu3+ phosphors are based on monitoring the luminescence intensity ratio between the NYVO host emission and Eu3+ luminescence lines. Notably, the optical thermometry of NYVO:Eu3+ was characterized based on the fluorescence intensity ratio of VO4 3- and Eu3+ emissions in the 298-440 K range, with maximum absolute and relative sensitivities of 3.4% K-1 and 0.0032 K-1 respectively and a temperature uncertainty of 0.01. NYVO:Eu3+ can then be considered as a potential red phosphor for application in ultraviolet-pumped white light-emitting diodes and as a potential optical thermometer. It provides new possibilities for the design of multifunctional materials for red light-emitting diodes and for non-contact thermometry.
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Affiliation(s)
- Ikhlas Kachou
- Laboratoire de Physique Appliquée, Groupe de Physique des Matériaux Luminescents, Faculté des Sciences de Sfax, Département de Physique, Université de Sfax BP 1171 3018 Sfax Tunisia
| | - Kamel Saidi
- Laboratoire de Physique Appliquée, Groupe de Physique des Matériaux Luminescents, Faculté des Sciences de Sfax, Département de Physique, Université de Sfax BP 1171 3018 Sfax Tunisia
| | - Rached Salhi
- Laboratory of Advanced Materials, National School of Engineers of Sfax, Sfax University 3018 Sfax Tunisia
- Univ Grenoble Alpes, CNRS, Grenoble INP, LMGP, Grenoble France Institute of Engineering Univ Grenoble 38000 France
| | - Mohamed Dammak
- Laboratoire de Physique Appliquée, Groupe de Physique des Matériaux Luminescents, Faculté des Sciences de Sfax, Département de Physique, Université de Sfax BP 1171 3018 Sfax Tunisia
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11
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Peng L, Zhou Y, Qin F, Li L, Zhang Z. High performance FIR thermometry on the basis of the redshift of CTB by dual-wavelength alternative excitation in Eu 3+:YVO 4. OPTICS LETTERS 2021; 46:5818-5821. [PMID: 34851898 DOI: 10.1364/ol.442429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 10/28/2021] [Indexed: 06/13/2023]
Abstract
Compared with the forbidden 4f transition of rare earth ions, the strong absorption of the charge transfer band (CTB) enabled fluorescence thermometry to have high luminescence efficiency. Based on the temperature induced redshift of CTB, a high performance fluorescence intensity ratio (FIR) thermometry performed by dual-wavelength alternative excitation was studied. By way of the rising and falling edges of CTB in Eu3+ doped YVO4, monochrome sensitivity as a function of excitation wavelength was studied in the range of 303-783 K. The excitation wavelength with the highest positive monochrome sensitivity was determined, as well as that with the negative one. The optimum FIR temperature sensing strategy is proposed, and the theoretical highest relative sensitivity (Sr) is calculated to be 1.86% K-1, with the lowest uncertainty (ΔT) of 0.1 K at 783 K.
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Zhang Y, Guo N, Shao B, Li J, Ouyang R, Miao Y. Photoluminescence and optical temperature measurement of Mn 4+/Er 3+ co-activated double perovskite phosphor through site-advantageous occupation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 259:119797. [PMID: 33984716 DOI: 10.1016/j.saa.2021.119797] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 03/30/2021] [Accepted: 04/04/2021] [Indexed: 06/12/2023]
Abstract
Because traditional methods based on thermal coupling energy level temperature measurement have large errors, a new temperature sensing strategy is proposed to attain strong sensitivity and excellent signal resolution ability. The rare-earth and also transition metal ions with poles apart thermal quenching channels are used as dual emission centers to find a suitable host to achieve high-efficiency dual-mode emission. In this work, a string of phosphors with NaLaMgWO6 (NLMW) as the host, the single-doped and double-doped Mn4+ and Er3+ phosphors were adopted by the traditional high temperature solid-state reaction method. The crystallographic structure of the phosphor was analyzed by X-ray power diffraction and Rietveld refinement methods, and the results showed that a pure double perovskite phosphor with a monoclinic structure was successfully prepared. The photoluminescence excitation and emission spectrum properties, CIE chromaticity coordinates and photoluminescence spectra at different temperatures are detailed studied. Excited by ultraviolet light (300 nm), corresponding to the 4A2→4T1 transition of Mn4+ and the charge transfer from O2- to W6+ of Er3+. There is no energy transfer between Mn4+ and Er3+. NLMW:Mn4+/Er3+ phosphors were especially sensitive to temperature changes within the scope of 303 K to 523 K. As the temperature increases, the fluorescence intensity of Mn4+ is thermally quenched faster than Er3+. The luminescent intensity ratio of Er3+ thermal coupling level and the FIR of Er3+/Mn4+ are used to study the temperature performance. The results show that the maximum relative sensitivity of FIR up to 1.31% K-1, which is higher than the maximum temperature sensitivity based on the thermal coupling energy level, and which is beyond most of the non-contact temperature measurement materials previously reported, confirming that NLMW:Mn4+/Er3+ phosphors have application potential in non-contact temperature measurement.
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Affiliation(s)
- Yuhui Zhang
- Department of Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Ning Guo
- Department of Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China.
| | - Baiqi Shao
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
| | - Jing Li
- Department of Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Ruizhuo Ouyang
- Department of Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Yuqing Miao
- Department of Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
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Huang S, Xiahou J, Zhu Q, Takei T, Kim BN, Li JG. Malate-aided selective crystallization and luminescence comparison of tetragonal and monoclinic LaVO 4:Eu nanocrystals. Dalton Trans 2021; 50:10147-10158. [PMID: 34231601 DOI: 10.1039/d1dt01644j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
With malate (Mal2-) as a new type of chelate, tetragonal (t-) and monoclinic (m-) structured LaVO4:Eu crystals (∼10-60 nm) were selectively crystallized as nanosquares and nanorods via a hydrothermal reaction at 200 °C for 24 h. The effects of the Mal2-:(La,Eu)3+ molar ratio, solution pH and Eu3+ content on the phase structure and crystal morphology were systematically investigated and elucidated. The competition between OH- and Mal2- toward rare earth ions was discussed to play a critical role in phase selection, and the t-phase can only be fabricated at pH ∼ 6-8 with the assistance of Mal2-. The optimal Eu3+ content for luminescence was determined to be ∼5 at% under the VO43- → Eu3+ energy transfer mechanism. Experimental comparison showed that t-(La0.95Eu0.05)VO4 (λex = 275 nm, λem = 620 nm) emits ∼5.3 times as strong as m-(La0.95Eu0.05)VO4 does (λex = 313 nm, λem = 616 nm), while theoretical analysis revealed that the 5D0 level of Eu3+ has a quantum efficiency of ∼80% for the former and ∼70% for the latter. Besides, the t- and m-(La0.95Eu0.05)VO4 nanocrystal phosphors were analyzed to have fluorescence lifetimes of ∼1.53 ± 0.01 and 2.28 ± 0.01 ms for their 620 and 616 nm red emissions, respectively.
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Affiliation(s)
- Sai Huang
- Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Materials Science and Engineering, Northeastern University, Shenyang, Liaoning 110819, China and Research Center for Functional Materials, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan.
| | - Junqing Xiahou
- Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Materials Science and Engineering, Northeastern University, Shenyang, Liaoning 110819, China
| | - Qi Zhu
- Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Materials Science and Engineering, Northeastern University, Shenyang, Liaoning 110819, China
| | - Toshiaki Takei
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Byung-Nam Kim
- Research Center for Functional Materials, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan.
| | - Ji-Guang Li
- Research Center for Functional Materials, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan.
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Stefańska D, Bondzior B, Vu THQ, Grodzicki M, Dereń PJ. Temperature sensitivity modulation through changing the vanadium concentration in a La 2MgTiO 6:V 5+,Cr 3+ double perovskite optical thermometer. Dalton Trans 2021; 50:9851-9857. [PMID: 34195737 DOI: 10.1039/d1dt00911g] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
To fulfil the requirements of operating at low temperature in a harsh environment, the investigation on optical thermometers plays an increasingly important role. In this work, the influence of vanadium concentration on the capability of temperature readout by La2MgTiO6:V5+,Cr3+ luminescent thermometers was investigated for the first time. The presence of V3+ and V5+ was verified by XPS and absorption measurements. In the emission spectra, a blue-green emission region was assigned to both host and V5+ emission. Moreover, a spin-forbidden emission of Cr3+ ions was also detected. Vanadium ions in the +3 oxidation state do not exhibit luminescence, but play a role as a charge compensator. The highest emission intensity was obtained from the sample doped with 0.1% V. Besides, with increasing vanadium concentration, a redshift in the maximum position of the spectrum was observed corresponding to a movement from the greenish blue to yellowish green region in the CIE1931. It was shown that the relative sensitivity (Sr) and the temperature operating range can be easily modified by changing the concentration of vanadium ions. In particular, the outstanding relative sensitivities of 1.71% K-1 (at 187 K) and 1.96% K-1 (at 165 K) obtained from La2MgTiO6:0.1%V5+,Cr3+ and La2MgTiO6:0.05%V5+,Cr3+ demonstrated the enormous potential of this material for thermal sensing application.
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Affiliation(s)
- Dagmara Stefańska
- W. Trzebiatowski Institute of Low Temperature and Structural Research of the Polish Academy of Sciences, Wroclaw, Poland.
| | - Bartosz Bondzior
- W. Trzebiatowski Institute of Low Temperature and Structural Research of the Polish Academy of Sciences, Wroclaw, Poland.
| | - Thi Hong Quan Vu
- W. Trzebiatowski Institute of Low Temperature and Structural Research of the Polish Academy of Sciences, Wroclaw, Poland.
| | - Miłosz Grodzicki
- Łukasiewicz Research Network - PORT Polish Center for Technology Development, Stabłowicka 147, Wrocław, Poland and Institute of Experimental Physics, University of Wrocław, pl. M. Borna 9, Wrocław, Poland
| | - Przemysław J Dereń
- W. Trzebiatowski Institute of Low Temperature and Structural Research of the Polish Academy of Sciences, Wroclaw, Poland.
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15
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Zhou L, Du P, Li L. Facile modulation the sensitivity of Eu 2+/Eu 3+-coactivated Li 2CaSiO 4 phosphors through adjusting spatial mode and doping concentration. Sci Rep 2020; 10:20180. [PMID: 33214637 PMCID: PMC7678844 DOI: 10.1038/s41598-020-77185-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 10/28/2020] [Indexed: 01/23/2023] Open
Abstract
Series of Eu2+/Eu3+-coactivated Li2CaSiO4 phosphors were prepared by solid-state reaction technique. All the samples emitted the unique emissions of Eu2+ and Eu3+ ions when excited by 395 nm, while the strongest emission intensity was received when x = 0.03. On the basis of theoretical discussion, it is evident that crossover relaxation should be responsible for the thermal quenching mechanism which was further proved by the unchanged lifetime at elevated temperature. Besides, through analyzing the inconsistent responses of the emission intensities of the Eu2+ and Eu3+ ions to the temperature, the optical thermometric properties of the designed phosphors were studied. By selecting different emissions of Eu3+ ions and combining with that of the Eu2+ ions, adjustable sensitivities were realized in the resultant phosphors. Furthermore, the sensitivities of the studied compound were also found to be greatly affected by the doping concentration. The maximum absolute and relative sensitivities of the synthesized compounds were 0.0025 K-1 and 0.289% K-1, respectively. These achieved results implied that the Eu2+/Eu3+-coactivated Li2CaSiO4 phosphors were promising candidates for optical thermometry. Additionally, this work also provided promising methods to modulate the sensitivities of the luminescent compounds by adjusting spatial mode and doping concentration.
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Affiliation(s)
- Luhui Zhou
- Department of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, Zhejiang, China
| | - Peng Du
- Department of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, Zhejiang, China.
| | - Li Li
- Schol of Science, Chongqing University of Posts and Telecommunications, Chongqing, China.
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16
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Zhou L, Du P, Li W, Luo L, Xing G. Composition Regulation Triggered Multicolor Emissions in Eu2+-Activated Li4(Sr1–xCa1+x)(SiO4)2 for a Highly Sensitive Thermometer. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c00967] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Luhui Zhou
- Department of Microelectronic Science and Engineering, Ningbo University, Ningbo, Zhejiang 315211, China
- School of Physical Science and Technology, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Peng Du
- Department of Microelectronic Science and Engineering, Ningbo University, Ningbo, Zhejiang 315211, China
- School of Physical Science and Technology, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Weiping Li
- Department of Microelectronic Science and Engineering, Ningbo University, Ningbo, Zhejiang 315211, China
- School of Physical Science and Technology, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Laihui Luo
- Department of Microelectronic Science and Engineering, Ningbo University, Ningbo, Zhejiang 315211, China
- School of Physical Science and Technology, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Guozhong Xing
- Key Laboratory of Microelectronics Devices and Integrated Technology, Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
- University of the Chinese Academy of Sciences, Beijing 100049, China
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17
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An acid-base resistant Zn-based metal-organic framework as a luminescent sensor for mercury(II). J SOLID STATE CHEM 2020. [DOI: 10.1016/j.jssc.2019.121153] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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18
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Du P, Hou Y, Li W, Luo L. Ultra-high sensitivity of multicolor Sm3+-doped LiSrVO4 phosphors for contactless optical thermometers. Dalton Trans 2020; 49:10224-10231. [DOI: 10.1039/d0dt01907k] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Multicolor Sm3+-doped LiSrVO4 phosphors with ultra-high Sa and Sr values of 1.076 K−1 and 6.167% K−1, respectively, are promising candidates for contactless thermometers.
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Affiliation(s)
- Peng Du
- Department of Microelectronic Science and Engineering
- School of Physical Science and Technology
- Ningbo University
- 315211 Ningbo
- China
| | - Yafei Hou
- Department of Microelectronic Science and Engineering
- School of Physical Science and Technology
- Ningbo University
- 315211 Ningbo
- China
| | - Weiping Li
- Department of Microelectronic Science and Engineering
- School of Physical Science and Technology
- Ningbo University
- 315211 Ningbo
- China
| | - Laihui Luo
- Department of Microelectronic Science and Engineering
- School of Physical Science and Technology
- Ningbo University
- 315211 Ningbo
- China
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Lv Y, Jin Y, Wu H, Liu D, Xiong G, Ju G, Chen L, Hu Y. An All-Optical Ratiometric Thermometer Based on Reverse Thermal Response from Interplay among Diverse Emission Centers and Traps with High-Temperature Sensitivity. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b05286] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Yang Lv
- School of Physics and Optoelectronic Engineering, Guangdong University of Technology, WaiHuan Xi Road, No. 100, Guangzhou 510006, China
| | - Yahong Jin
- School of Physics and Optoelectronic Engineering, Guangdong University of Technology, WaiHuan Xi Road, No. 100, Guangzhou 510006, China
- Department of Chemistry, The Hong Kong University of Science and Technology, Kowloon, 999077, Hong Kong China
| | - Haoyi Wu
- School of Physics and Optoelectronic Engineering, Guangdong University of Technology, WaiHuan Xi Road, No. 100, Guangzhou 510006, China
| | - Dong Liu
- School of Physics and Optoelectronic Engineering, Guangdong University of Technology, WaiHuan Xi Road, No. 100, Guangzhou 510006, China
| | - Guangting Xiong
- School of Physics and Optoelectronic Engineering, Guangdong University of Technology, WaiHuan Xi Road, No. 100, Guangzhou 510006, China
| | - Guifang Ju
- School of Physics and Optoelectronic Engineering, Guangdong University of Technology, WaiHuan Xi Road, No. 100, Guangzhou 510006, China
| | - Li Chen
- School of Physics and Optoelectronic Engineering, Guangdong University of Technology, WaiHuan Xi Road, No. 100, Guangzhou 510006, China
| | - Yihua Hu
- School of Physics and Optoelectronic Engineering, Guangdong University of Technology, WaiHuan Xi Road, No. 100, Guangzhou 510006, China
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