1
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Han Z, Yu H, Liu T, Sun J, Li X, Chen B. A novel white Y 2(Ti 0.8Hf 0.2) 2O 7: Eu phosphors regulated by HfO 2 exhibiting low color shifting for high temperature. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 323:124935. [PMID: 39116594 DOI: 10.1016/j.saa.2024.124935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 07/15/2024] [Accepted: 08/03/2024] [Indexed: 08/10/2024]
Abstract
The development of white phosphors that can be activated in near-ultraviolet light is highly important in the field of LED lighting. In this work, a series of color-tunable Y2(Ti1-xHfx)2O7:Eu phosphors were prepared by adjusting the HfO2 and Eu3+ concentrations. In particular, white Y2(Ti0.8Hf0.2)2O7:Eu phosphors were successfully synthesized and emitted a broad band covering the entire visible light region upon excitation with 340 nm UV light. The white banded materials were composed of Eu2+ and Eu3+ emissions and HfO2 defect emission. The formation of Eu2+ ions was caused by the introduction of HfO2, which causes self-reduction of Eu3+ ions but does not require additional reducing agents. The white Y2(Ti0.8Hf0.2)2O7:Eu phosphors exhibit low color shifting at high temperature, which is very important for LED applications. The chromaticity shift of the Y2(Ti0.8Hf0.2)2O7:0.2Eu phosphor is 2.83 × 10-2 at 503 K, which is only 54.8 % that of commercial three-color white phosphors at the same temperature. The Ra value did not decrease significantly with increasing temperature and reached 90.2 at 383 K. Y2 (Ti0.8Hf0.2)2O7:0.2Eu phosphors were assembled with a 365 nm LED chip to fabricate a WLED device that showed excellent white-colored coordinates (0.345, 0.358) and a high Ra value of 90.1 under a 300 mA current.
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Affiliation(s)
- Zhanwen Han
- Department of Physics, Dalian Maritime University, Dalian 116026, Liaoning, China
| | - Hongquan Yu
- Department of Physics, Dalian Maritime University, Dalian 116026, Liaoning, China.
| | - Tianshuo Liu
- Department of Physics and Astronomy, University College London, Gower St., London WC1E 6BT, United Kingdom
| | - Jiashi Sun
- Department of Physics, Dalian Maritime University, Dalian 116026, Liaoning, China
| | - Xiangping Li
- Department of Physics, Dalian Maritime University, Dalian 116026, Liaoning, China.
| | - Baojiu Chen
- Department of Physics, Dalian Maritime University, Dalian 116026, Liaoning, China.
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2
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Sun W, Liu Z, Xu Z, Zhang Y. Unravelling the interplay of local structure and valence transitions in Ce-doped CaYAlO 4 luminescent materials. LUMINESCENCE 2024; 39:e4591. [PMID: 37675627 DOI: 10.1002/bio.4591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 08/28/2023] [Accepted: 09/03/2023] [Indexed: 09/08/2023]
Abstract
Cerium has been widely used as a dopant in luminescent materials due to its unique electronic configurations. It is generally anticipated that the luminescence properties of rare-earth-doped materials are closely related to the local environment of activators, especially for Ce3+ . In addition, it is convenient to modulate its emission wavelength by adjusting the composition and structure. In this study, we systematically analyzed the microstructure of the Ce-doped CaYAlO4 system at atomic resolution. The quantitive results indicated that the structure distortion greatly influenced the valence state of the Ce dopant, which is critical to its luminescence efficiency. In addition, valence variations also exist from surface to inner structure due to the big distortion area around the surface. Our results unravel the interplay of local structure and valence transitions in Ce-doped aluminate phosphors, which has the potential to be applied in other luminescent materials.
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Affiliation(s)
- Wenhao Sun
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, China
| | - Zihui Liu
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, China
| | - Zhipeng Xu
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, China
| | - Yang Zhang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, China
- Center of Advanced Analysis & Gene Sequencing, Zhengzhou University, Zhengzhou, China
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3
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Zhao C, Meng Z, Guo Z, Wang Z, Cao J, Zhu J, Ma C, Zhang M, Liu W. Achieving excitation wavelength-power-dependent colorful luminescence via multiplexing of dual lanthanides in fluorine oxide particles for multilevel anticounterfeiting. Dalton Trans 2023; 52:14132-14141. [PMID: 37747221 DOI: 10.1039/d3dt01715j] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
The optical characteristics of multimode luminescent materials like multimode luminescence (photoluminescence, afterglow, thermoluminescence) and a multi-excitation source (light, thermal, mechanical force) play crucial roles in optical data storage and readout, document security and anticounterfeiting. A higher level of advanced anticounterfeiting may rely on multimode anticounterfeiting materials that can realize multicolor luminescence. Here, a highly integrated multimode and multicolor Y7O6F9:Er3+,Eu3+ material is developed through multiplexing of dual lanthanides in fluorine oxide particles. In photoluminescence and photoluminescence/up-conversion luminescence modes, the material Y7O6F9:Er3+,Eu3+ has the characteristic of excitation wavelength and power dependence. In the photoluminescence mode, under excitation at 254 nm and 365 nm, Y7O6F9:Er3+ and Y7O6F9:Eu3+ showed bright red and green emissions, respectively. In the photoluminescence/up-conversion mode, under the increased excitation power from 0.2 to 2.0 W cm-2, the color of luminescence emission can be finely tuned from red to orange, yellow and green. Taking this unique excitation wavelength-power-dependent luminescence property into account, a multilevel anticounterfeiting device with the Lily pattern was designed. The device readily integrates the advantages of the excitation wavelength-dependent photoluminescence emissions and excitation power-dependent photoluminescence emissions in one overall device. These findings offer unique insight for designing highly integrated multimode, multicolor luminescence materials and advanced anticounterfeiting technology toward a wide variety of applications, particularly multilevel anticounterfeiting devices.
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Affiliation(s)
- Chenyang Zhao
- School of Chemistry and Chemical Engineering, Qinghai Normal University, Xining 810008, China.
| | - Zikai Meng
- School of Chemistry and Chemical Engineering, Qinghai Normal University, Xining 810008, China.
| | - Zhen Guo
- School of Chemistry and Chemical Engineering, Qinghai Normal University, Xining 810008, China.
| | - Zhenbin Wang
- School of Chemistry and Chemical Engineering, Qinghai Normal University, Xining 810008, China.
- Academy of Plateau Science and Sustainability, People's Government of Qinghai Province & Beijing Normal University, Xining, 810016, China
| | - Jiajia Cao
- School of Chemistry and Chemical Engineering, Qinghai Normal University, Xining 810008, China.
| | - Jihua Zhu
- School of Chemistry and Chemical Engineering, Qinghai Normal University, Xining 810008, China.
- Academy of Plateau Science and Sustainability, People's Government of Qinghai Province & Beijing Normal University, Xining, 810016, China
| | - Cunhua Ma
- School of Chemistry and Chemical Engineering, Qinghai Normal University, Xining 810008, China.
- Academy of Plateau Science and Sustainability, People's Government of Qinghai Province & Beijing Normal University, Xining, 810016, China
| | - Mingjin Zhang
- School of Chemistry and Chemical Engineering, Qinghai Normal University, Xining 810008, China.
- Academy of Plateau Science and Sustainability, People's Government of Qinghai Province & Beijing Normal University, Xining, 810016, China
| | - Weisheng Liu
- School of Chemistry and Chemical Engineering, Qinghai Normal University, Xining 810008, China.
- Academy of Plateau Science and Sustainability, People's Government of Qinghai Province & Beijing Normal University, Xining, 810016, China
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
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4
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Chen F, Akram MN, Chen X. Influence of Mn 2+ and Eu 3+ Concentration on Photoluminescence and Thermal Stability Properties in Eu 3+-Activated ZnMoO 4 Red Phosphor Materials. MICROMACHINES 2023; 14:1605. [PMID: 37630141 PMCID: PMC10456722 DOI: 10.3390/mi14081605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 08/11/2023] [Accepted: 08/13/2023] [Indexed: 08/27/2023]
Abstract
The integration of trivalent europium ion (Eu3+)-doped zinc molybdate (ZnMoO4) as red phosphors in next-generation solid-state lighting (SSL) is impeded by their extended electron lifetime and suboptimal thermal stability. To overcome these limitations, we propose a co-doping approach by incorporating Mn2+ and Eu3+ in ZnMoO4, aiming to improve thermal reversibility and reduce the lifetime of electron transitions. A series of Eu3+-doped ZnMoO4 and Mn2+/Eu3+-co-doped ZnMoO4 phosphor materials were synthesized via the conventional sol-gel method, and their photoluminescence properties were compared under high-temperature conditions. Experimental results indicate that the introduction of Mn2+ into Eu3+-doped ZnMoO4 leads to a decrease in quantum efficiency and electron lifetime, primarily attributed to defects within the crystal lattice and energy transfer from Eu3+ to Mn2+, resulting in enhanced non-radiative transitions. However, the addition of a small quantity of Mn2+ remarkably improves the thermal stability and reversibility of the phosphors. Consequently, this co-doping strategy presents a promising avenue for expanding the application possibilities of phosphor materials, particularly for high-power SSL applications subjected to elevated temperatures. Hence, Eu3+-only doped samples are well-suited for lighting applications due to their high IQE and excellent thermal stability. Conversely, Eu3+/Mn2+-co-doped samples show promise in applications that require a shorter electron lifetime and good reversibility.
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Affiliation(s)
| | | | - Xuyuan Chen
- Department of Microsystems, Faculty of Technology, Natural Sciences and Maritime Sciences, Campus Vestfold, University of South-Eastern Norway, 3184 Borre, Norway; (F.C.); (M.N.A.)
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5
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Meng Z, Gao Y, Song J, Jiang Z, Lv W, Zeng Q, Wen D, Hu T. Tetrahedrally coordinated rigid crystal structure enables partial self-reduction of mixed-valence europium for optical thermometric application. Dalton Trans 2023; 52:5443-5452. [PMID: 36806853 DOI: 10.1039/d2dt03988e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
Mixed-valence europium-activated phosphors are receiving attention in many fields, such as lighting, anti-counterfeiting, optical recording, encryption, and temperature sensing. However, it remains difficult to construct mixed-valence europium-activated compounds due to the reductive and oxidative synthesis conditions required to obtain Eu2+ and Eu3+ ions, respectively. Herein, mixed-valence Eu2+/Eu3+ was realized in the CaBPO5 built by rigidly connected BO4 and PO4 tetrahedrons by partial Eu3+ → Eu2+ self-reduction in the air atmosphere. Commendably, the CaBPO5:Eu2+/Eu3+ phosphor exhibits excellent ratiometric temperature sensing performance with the maximum absolute and relative sensitivity being as high as 0.184 K-1 and 3.444% K-1 with good signal discriminability, due to the high and low, respectively, temperature-dependence of Eu2+ and Eu3+ emissions. The rapid dropping intensity of Eu2+ in CaBPO5 with increasing temperature was due to the small energy gap (∼0.48 eV) between the Eu2+-5d state and the conduction band. Our work not only provides a novel thermometer candidate but also enlightens researchers to a method of effectively designing new mixed-valence metal-ion activated luminescent thermometers via selective tetrahedrally coordinated rigid crystal structure.
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Affiliation(s)
- Zhichao Meng
- School of Applied Physics and Materials, Wuyi University, Jiangmen 529020, Guangdong Province, P. R. China.
| | - Yan Gao
- School of Applied Physics and Materials, Wuyi University, Jiangmen 529020, Guangdong Province, P. R. China.
| | - Ji'an Song
- School of Applied Physics and Materials, Wuyi University, Jiangmen 529020, Guangdong Province, P. R. China.
| | - Zelong Jiang
- School of Applied Physics and Materials, Wuyi University, Jiangmen 529020, Guangdong Province, P. R. China.
| | - Wei Lv
- School of Applied Physics and Materials, Wuyi University, Jiangmen 529020, Guangdong Province, P. R. China.
| | - Qingguang Zeng
- School of Applied Physics and Materials, Wuyi University, Jiangmen 529020, Guangdong Province, P. R. China.
| | - Dawei Wen
- School of Applied Physics and Materials, Wuyi University, Jiangmen 529020, Guangdong Province, P. R. China.
| | - Tao Hu
- School of Applied Physics and Materials, Wuyi University, Jiangmen 529020, Guangdong Province, P. R. China.
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6
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Guan J, Zhang J, Wang X, Zhang Z, Wang F. Synthesis of L1 0 -Iron Triad (Fe, Co, Ni)/Pt Intermetallic Electrocatalysts via a Phosphide-Induced Structural Phase Transition. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2207995. [PMID: 36417324 DOI: 10.1002/adma.202207995] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 11/10/2022] [Indexed: 06/16/2023]
Abstract
Structurally ordered L10 -iron triad (Fe, Co, Ni)/Pt with a M(iron triad)/Pt ratio ≈1:1 has drawn increasing attention in oxygen reduction reaction (ORR) electrocatalysis and fuel cell technologies by virtue of the high performance derived from their strong surface strain. However, the synthesis of intermetallic L10 -M(iron triad)Pt generally requires the accurate content control of the multicomponent and the sufficient thermal energy to overcome the kinetic barrier for atom diffusion. This work reports a synthesis of sub ≈5 nm L10 -intermetallic nanoparticles using phosphide intermediate-induced structural phase transition. Taking the L10 -CoPt intermetallic, for example, the formation of the L10 structure depends on the Co2 P intermediates can provide abundant P vacancies to accelerate the Pt diffusion into the orthorhombic Co-rich skeletons, instead of the traditional route of intermetallic from solid solution. L10 -CoPt prepared by this method has a high degree of ordering and shows the broad adaptability of various Pt-based electrocatalysts with different loading and states to improve their electrocatalytic performance. Additionally, the other L10 -M(iron triad)Pt intermetallics, i.e., L10 -NiPt and L10 -FePt, are also prepared through this phosphide-induced phase transition. The findings provide a promising strategy for designing other intermetallic materials alloy materials using a structural phase transition induced by a second phase.
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Affiliation(s)
- Jingyu Guan
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Jianqi Zhang
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Xinliang Wang
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Zhengping Zhang
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Feng Wang
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
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7
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Sahoo S, Mondal S, Sarma D. Luminescent Lanthanide Metal Organic Frameworks (LnMOFs): A Versatile Platform towards Organomolecule Sensing. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214707] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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8
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Rare-earth (Nd and Eu) induced structural transformation and optical properties of brownmillerite-type Sr2ScGaO5 oxide. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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9
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Subhagan S, Ahmad S, Kundu P, Pandey MK, Som S, Das S. Governing the crystallographic sites for tuning Eu 2+ emission in an apatite oxyfluoride host to be applied for superior white light emitting diodes. Dalton Trans 2022; 51:14601-14617. [PMID: 36082750 DOI: 10.1039/d2dt02236b] [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
Single white light-emitting phosphors for near-UV-converted white light-emitting diodes (WLEDs) are the best alternatives to tricolour phosphor blends and blue light converted yellow-emitting garnets. Nevertheless, achieving white light with elevated colour rendering (CRI) from a single-phase phosphor activated with a lone activator ion is a major challenge. This study aimed at the generation of white light from a single-phase composition activated only with europium. The study started with structural evaluations of Eu3+-activated Ca4La6Si6O24F2 phosphors using X-ray diffraction (XRD) and Eu3+ photoluminescence to elucidate the local environment of rare-earth ions and the symmetric nature of the lattice sites. Ca4La6Si6O24F2 crystallized in the hexagonal P63/m space group. The predominant 5D0-7F2 electric dipole transition at 614 nm, and the non-splitting as well as the zero-shifting behaviour of 5D0-7F0 at 578 nm, suggested that the rare-earth ionic substitutions preferably took place at the larger asymmetric sites. Introducing Sr2+ ions in Ca4La6Si6O24F2:Eu3+/Eu2+ that is synthesized under a reducing atmosphere suppressed Eu3+ emission. From the optimized Ca1.98Sr1.98La6Si6O24F2:0.04Eu2+, a sequence of M2+-codoped (M = Mg/Ba) Ca1.98Sr1.98La6Si6O24F2:0.04Eu2+ phosphors were further developed. The substitutions of Mg2+ and Ba2+ altered the crystal field by changing the lattice parameters. The Mg2+ -doped samples showed a blue-shift from 520 nm (Mg2+ = 0) to 471 nm (Mg2+ = 1.0), whereas the Ba2+-doped compositions showed a red-shift from 520 nm (Ba2+ = 0) to 536 nm (Ba2+ = 1.2). The change of symmetry owing to the Mg2+/Ba2+ substitution could have led to the centroid shift, which was responsible for the blue- or red-shift of the emission spectra. The XRD of Ca1.38Sr1.38La6Si6O24F2:0.04Eu2+,1.2Ba2+ indicated a Ba2+-induced lattice site expansion. Keeping this in view, the Eu2+ ions concentrations were further enhanced from 0.04 to 0.3, and the resultant photoluminescence was further enhanced and red-shifted. The optimized sample showed better intensity compared with the commercial Y3Al5O12:Ce3+ and exhibited decent photoluminescence above 70% at 150 °C as compared with that at room temperature. Finally, several prototype WLEDs were fabricated using the single phosphor Ca1.365Sr1.365La6Si6O24F2:0.07Eu2+,1.2Ba2+ with near-UV and violet-LED chips. The outcomes indicated the promising nature of this single-composition phosphor for indoor lighting.
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Affiliation(s)
- Sreevalsa Subhagan
- Materials Science and Technology Division, CSIR - National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram, Kerala, 695019, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Shahzad Ahmad
- Department of Chemistry, Zakir Husain Delhi College, University of Delhi, Delhi, 110002, India
| | - Partha Kundu
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.,Environmental Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, Kerala, 695019, India
| | | | - Sudipta Som
- Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - Subrata Das
- Materials Science and Technology Division, CSIR - National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram, Kerala, 695019, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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10
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Jiang D, Geng L, Zhou S, Wang Y. Photoluminescence properties and energy transfer in the Sm3+ and Eu3+ co-doped Ca3Bi(PO4)3 red phosphor. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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11
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Li S, Qiu Z, Mo Y, Zhang H, Lian H, Zhang J, Lian S. Self-reduction-induced BaMgP 2O 7:Eu 2+/3+: a multi-stimuli-responsive phosphor for X-ray detection, anti-counterfeiting and optical thermometry. Dalton Trans 2022; 51:6622-6630. [PMID: 35411356 DOI: 10.1039/d1dt04301c] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Mixed-valence Eu2+/3+-activated phosphors have attracted wide attention due to their excellent luminescence tunability. Steady control of the Eu2+/Eu3+ ratio is the key to achieving reproducible Eu2+/3+ co-doped materials. In this work, BaMgP2O7:xEu2+/3+ (BMPO:Eu, x = 0.001-0.20) was successfully prepared by the traditional solid-state method in air. Eu3+ undergoes selective self-reduction at Ba2+ sites surrounded by a [P2O7] framework, leading to quantitive Eu2+/Eu3+. The phosphors exhibit a blue-violet emission band at ∼410 nm due to 5d-4f transitions of Eu2+ and a group of red emission peaks from 5D0-7FJ of Eu3+. Controllable multicolor emissions are realized by regulating the Eu content and excitations. A linear response of overall luminescence intensity to irradiation dose makes the phosphor appropriate for X-ray detection. The combination of UV-blue excitation-dependent color evolution and X-ray luminescence qualifies the phosphors with great potential for multi-level anti-counterfeiting. In addition, Eu3+ presents abnormal anti-thermal quenching, so that the fluorescence intensity ratio (FIR) of Eu2+/Eu3+ changes in the temperature range of 300-520 K, suggesting a promising application in optical thermometry. Therefore, selectively partial self-reduction in a multi-cationic host is an effective strategy to design mixed-valence co-doped materials, providing a multiplicity of applications.
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Affiliation(s)
- Song Li
- Key Laboratory of Light Energy Conversion Materials of Hunan Province College, Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China.
| | - Zhongxian Qiu
- Key Laboratory of Light Energy Conversion Materials of Hunan Province College, Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China.
| | - Yahuan Mo
- Key Laboratory of Light Energy Conversion Materials of Hunan Province College, Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China.
| | - Hongwu Zhang
- Key Lab of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China.
| | - Hongzhou Lian
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
| | - Jilin Zhang
- Key Laboratory of Light Energy Conversion Materials of Hunan Province College, Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China.
| | - Shixun Lian
- Key Laboratory of Light Energy Conversion Materials of Hunan Province College, Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China.
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12
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Qin Y, Zhong F, Bian Y, Hariyani S, Cao Y, Brgoch J, Seto T, Brik MG, Srivastava AM, Wang X, Wang Y. Sensitive and Reliable Fluorescent Thermometer Based on a Red-Emitting Li 2MgHfO 4:Mn 4+ Phosphor. Inorg Chem 2022; 61:8126-8134. [PMID: 35381177 DOI: 10.1021/acs.inorgchem.1c03971] [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
Contactless fluorescent thermometers are rapidly gaining popularity due to their sensitivity and flexibility. However, the development of sensitive and reliable non-rare-earth-containing fluorescent thermometers remains a significant challenge. Here, a new rare-earth-free, red-emitting phosphor, Li2MgHfO4:Mn4+, was developed for temperature sensing. An experimental analysis combined with density functional theory and crystal field calculations reveals that the sensitive temperature-dependent luminescence arises from nonradiative transitions induced by lattice vibration. Li2MgHfO4:Mn4+ also exhibits reliable recovery performance after 100 heating-cooling cycles due to the elimination of surface defects, which is rare but vital for practical application. This study puts forward a new design strategy for fluorescent thermometers and sheds light on the fundamental structure-property relationships that guide sensitive temperature-dependent luminescence. These considerations are crucial for developing next-generation fluorescence-based thermometers.
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Affiliation(s)
- Yonghong Qin
- School of Materials and Energy, Lanzhou University, Lanzhou 730000, China.,National & Local Joint Engineering Laboratory for Optical Conversion Materials and Technology, Lanzhou University, Lanzhou 730000, China.,Key Laboratory for Special Function Materials and Structural Design of the Ministry of the Education, Lanzhou University, Lanzhou 730000, China
| | - Fen Zhong
- School of Materials and Energy, Lanzhou University, Lanzhou 730000, China.,National & Local Joint Engineering Laboratory for Optical Conversion Materials and Technology, Lanzhou University, Lanzhou 730000, China.,Key Laboratory for Special Function Materials and Structural Design of the Ministry of the Education, Lanzhou University, Lanzhou 730000, China
| | - Yinan Bian
- School of Materials and Energy, Lanzhou University, Lanzhou 730000, China.,National & Local Joint Engineering Laboratory for Optical Conversion Materials and Technology, Lanzhou University, Lanzhou 730000, China.,Key Laboratory for Special Function Materials and Structural Design of the Ministry of the Education, Lanzhou University, Lanzhou 730000, China
| | - Shruti Hariyani
- Department of Chemistry, University of Houston, Houston, 77204 Texas, United States
| | - Yaxin Cao
- School of Materials and Energy, Lanzhou University, Lanzhou 730000, China.,National & Local Joint Engineering Laboratory for Optical Conversion Materials and Technology, Lanzhou University, Lanzhou 730000, China.,Key Laboratory for Special Function Materials and Structural Design of the Ministry of the Education, Lanzhou University, Lanzhou 730000, China
| | - Jakoah Brgoch
- Department of Chemistry, University of Houston, Houston, 77204 Texas, United States
| | - Takatoshi Seto
- School of Materials and Energy, Lanzhou University, Lanzhou 730000, China
| | - Mikhail G Brik
- College of Sciences & CQUPT-BUL Innovation Institute, Chongqing University of Posts and Telecommunications, Chongqing 400065, People's Republic of China.,Institute of Physics, University of Tartu, W. Ostwald Street 1, Tartu 50411, Estonia.,Institute of Physics, Jan Długosz University, Armii Krajowej 13/15, PL-42200 Częstochowa, Poland.,Academy of Romanian Scientists, Ilfov Street, no 3, 050044 Bucharest, Romania
| | - Alok M Srivastava
- Current Lighting Solutions, LLC, 1099 Ivanhoe Road, Cleveland, Ohio 44110, United States
| | - Xicheng Wang
- School of Materials and Energy, Lanzhou University, Lanzhou 730000, China.,National & Local Joint Engineering Laboratory for Optical Conversion Materials and Technology, Lanzhou University, Lanzhou 730000, China.,Key Laboratory for Special Function Materials and Structural Design of the Ministry of the Education, Lanzhou University, Lanzhou 730000, China
| | - Yuhua Wang
- School of Materials and Energy, Lanzhou University, Lanzhou 730000, China.,National & Local Joint Engineering Laboratory for Optical Conversion Materials and Technology, Lanzhou University, Lanzhou 730000, China.,Key Laboratory for Special Function Materials and Structural Design of the Ministry of the Education, Lanzhou University, Lanzhou 730000, China
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13
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Effects of rare-earth doping and reduction processes in LiCaPO4 compound: A computer simulation study. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2021.122769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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14
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Huang S, Shang M, Yan Y, Dang P, Lin J. Regulation of Local Site Structures to Stabilize Mixed-Valence Eu 2+/3+ under a Reducing Atmosphere for Multicolor Photoluminescence. Inorg Chem 2022; 61:1756-1764. [PMID: 35005893 DOI: 10.1021/acs.inorgchem.1c03672] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Co-doping mixed-valence Eu2+/3+ in a single-phase phosphor is an efficient method to realize the emission color regulation, which holds great potential for anticounterfeiting and ratiometric temperature sensing. Here, the mixed-valence Eu-doped Sr1.95+xLi1-xSi1-xAlxO4F (0 ≤ x ≤ 0.25) phosphors were designed and prepared under a reducing atmosphere. The correlation of local phase structures and luminescence properties was discussed. Replacing Si4+-Li+ ion pairs with Al3+-Sr2+ ion pairs compresses the Sr sites occupied by Eu2+, and it stabilizes Eu3+ in a reducing atmosphere and leads to the coexistence of Eu2+ and Eu3+ in single-phase Sr1.95+xLi1-xSi1-xAlxO4F:0.05Eu (0 ≤ x ≤ 0.25) phosphors. Based on the wavelength-dependent luminescence color behaviors of Sr1.95+xLi1-xSi1-xAlxO4F:0.05Eu phosphors, the fluorescent anticounterfeit papers/patterns containing Sr1.95+xLi1-xSi1-xAlxO4F:0.05Eu phosphors were the same as ordinary paper under ambient conditions. However, the hidden colors or images can be read out with green-orange luminescence under 365/300 nm light excitation. Benefiting from the diverse thermal response emission behaviors of Eu2+ (530 nm) and Eu3+ (703 nm), Sr1.95+xLi1-xSi1-xAlxO4F:0.05Eu phosphors exhibit temperature sensing performances, with the maximum absolute and relative sensitivity being 0.0294 K-1 at 573 K and 0.83% K-1 at 348 K. More importantly, Sr1.95+xLi1-xSi1-xAlxO4F:0.05Eu phosphors showed excellent stability in humid, acid, and alkali environments, which contributed to applying mixed-valence Eu2+/3+-doped Sr1.95+xLi1-xSi1-xAlxO4F to the fields of multicolor anticounterfeiting and noncontact optical thermometry.
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Affiliation(s)
- Shuai Huang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Material Science and Engineering, Shandong University, Jinan 250061, P. R. China.,College of Materials Science and Engineering, Nanchang University, 999 Xuefu Road, Nanchang 330031, P. R. China
| | - Mengmeng Shang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Material Science and Engineering, Shandong University, Jinan 250061, P. R. China
| | - Yu Yan
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Material Science and Engineering, Shandong University, Jinan 250061, P. R. China
| | - Peipei Dang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Jun Lin
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
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15
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16
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Wang P, Qiu L, Wei X, Yin M, Chen Y. Enhanced luminescence and tunable color in [Eu 2+, Si 4+]/Mn 2+ doped K 2BaCa(PO 4) 2 based on charge compensation and energy transfer. Dalton Trans 2021; 50:8144-8153. [PMID: 34028479 DOI: 10.1039/d1dt01064f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Recently, using the Eu2+ → Mn2+ energy transfer strategy to explore new single-phase phosphors suitable for the near-ultraviolet (n-UV) region has become one of the major strategies in solid-state lighting applications. Therefore, a novel color-tunable K2BaCa(PO4)2 (KBCPO):[Eu2+,Si4+],Mn2+ phosphor was developed because of the preeminent thermal stability of luminescence of Eu2+-activated KBCPO. In this study, we first designed a [Eu2+, Si4+] → [K+, P5+] charge compensation strategy to optimize the luminescence properties of Eu2+ in the KBCPO matrix. In terms of the obtained KBCPO:[Eu2+,Si4+] phosphor, this charge compensation method on the one hand strengthens the emission of Eu2+, and on the other hand, it dramatically improves the thermal stability of luminescence. In particular, the emission intensity of the KBCPO:0.03[Eu2+,Si4+] sample at 548 K can reach 103% relative to that at the initial temperature of 298 K. Based on this charge compensation strategy, we finally obtained a new dual emission KBCPO:[Eu2+,Si4+],Mn2+ phosphor. The analysis of the luminescence properties indicates that the emission enhancement of Mn2+ in KBCPO:[Eu2+,Si4+],Mn2+ stems from the energy transfer of Eu2+ → Mn2+ with the mechanism of the electric dipole-dipole interaction when excited at 365 nm. In addition, KBCPO:[Eu2+,Si4+],Mn2+ also has excellent thermal stability and the emission color could be easily tuned from cyan to orange only by adjusting the Eu2+ doping level. These results confirm that the KBCPO:[Eu2+,Si4+],Mn2+ phosphor is a viable candidate for n-UV white light emitting diodes.
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Affiliation(s)
- Peng Wang
- Key Laboratory of Strongly-Coupled Quantum Matter Physics, Chinese Academy of Sciences, School of Physical Sciences, University of Science and Technology of China, Hefei, 230026, P. R. China.
| | - Liting Qiu
- Key Laboratory of Strongly-Coupled Quantum Matter Physics, Chinese Academy of Sciences, School of Physical Sciences, University of Science and Technology of China, Hefei, 230026, P. R. China.
| | - Xiantao Wei
- Physics Experiment Teaching Center, School of Physical Sciences, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Min Yin
- Key Laboratory of Strongly-Coupled Quantum Matter Physics, Chinese Academy of Sciences, School of Physical Sciences, University of Science and Technology of China, Hefei, 230026, P. R. China.
| | - Yonghu Chen
- Key Laboratory of Strongly-Coupled Quantum Matter Physics, Chinese Academy of Sciences, School of Physical Sciences, University of Science and Technology of China, Hefei, 230026, P. R. China.
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17
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Shen B, Xu J, Mao Q, Zhong J. Enhanced luminescence properties of Ca1+xSr2−xAl2O6:Eu3+ (0 ≤ x ≤ 1) red phosphors based on composition modulation. RSC Adv 2021. [DOI: 10.1039/d1ra01291f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A series of Ca1+xSr2−xAl2O6:Eu3+ (0 ≤ x ≤ 1) red-emitting phosphors with adjustable optical properties and excellent quantum efficiency was developed for potential applications in warm WLEDs.
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Affiliation(s)
- Biao Shen
- College of Materials and Environmental Engineering
- Hangzhou Dianzi University
- Hangzhou 310018
- China
| | - Jianghang Xu
- College of Materials and Environmental Engineering
- Hangzhou Dianzi University
- Hangzhou 310018
- China
| | - Qinan Mao
- College of Materials and Environmental Engineering
- Hangzhou Dianzi University
- Hangzhou 310018
- China
| | - Jiasong Zhong
- College of Materials and Environmental Engineering
- Hangzhou Dianzi University
- Hangzhou 310018
- China
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18
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Environmental pollution analysis based on the luminescent metal organic frameworks: A review. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2020.116131] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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19
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Zhao T, Zhang F, Zhou J, Zhao X. Luminescent Metal-Organic Frameworks for Nitroaromatic Compounds Detection. COMMENT INORG CHEM 2020. [DOI: 10.1080/02603594.2020.1853537] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Tianhao Zhao
- College of Science, Sichuan Agricultural University, Ya’an, China
| | - Fenhang Zhang
- College of Science, Sichuan Agricultural University, Ya’an, China
| | - Jing Zhou
- College of Science, Sichuan Agricultural University, Ya’an, China
| | - Xiaoqing Zhao
- College of Science, Sichuan Agricultural University, Ya’an, China
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin, China
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20
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Mariscal-Jiménez A, Tarazaga Martín-Luengo A, Galiana B, Ballesteros C, Bonanni A, Martín-Sánchez J, Serna R. Photoluminescence and Stoichiometry Correlation in Nanocrystalline EuO x Thin Films: Tunable Color Emission. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2020; 124:15434-15439. [PMID: 32704340 PMCID: PMC7370298 DOI: 10.1021/acs.jpcc.0c03052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 06/02/2020] [Indexed: 06/11/2023]
Abstract
The development of broadband and ultracompact optoelectronic devices relies on the possibility of fabricating bright and tunable emitters at the nanoscale. Here, we show emission from EuO x (1 ≤ x < 1.4) thin films on silicon formed by nanocrystals with average sizes in the range of 5 nm. The photoluminescence emission of the nano-EuO x films is tunable as a function of the oxygen concentration changing from a green broadband Eu2+-related emission to a narrow red Eu3+-related emission. To reach these results has been instrumental through the use of a new methodology specially designed to achieve high-quality europium oxide films whose compositional properties are controlled by the growth base pressure and preserved thanks to a chemically stable and transparent cover layer of Al2O3. Our findings confirm the outstanding potential of nanostructured EuO x films as "one-compound" optical elements with tunable emission properties for their implementation in integrated silicon-based devices.
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Affiliation(s)
- Antonio Mariscal-Jiménez
- Laser
Processing Group, Instituto de Óptica,
IO-CSIC, C/Serrano 121, 28006 Madrid, Spain
- Departamento
de Tecnologías de la Información, Escuela Politécnica
Superior, Universidad CEU-San Pablo, CEU
Universities, Campus Montepríncipe, Boadilla del Monte, Madrid 28668, Spain
| | | | - Beatriz Galiana
- Department
of Physics, Escuela Politécnica Superior, Universidad Carlos III, 28911 Leganés, Madrid, Spain
| | - Carmen Ballesteros
- Department
of Physics, Escuela Politécnica Superior, Universidad Carlos III, 28911 Leganés, Madrid, Spain
| | - Alberta Bonanni
- Institut
für Halbleiter-und-Festkörperphysik, Johannes Kepler University, Altenbergerstr. 69, A-4040 Linz, Austria
| | - Javier Martín-Sánchez
- Institut
für Halbleiter-und-Festkörperphysik, Johannes Kepler University, Altenbergerstr. 69, A-4040 Linz, Austria
- Departamento
de Física, Universidad de Oviedo, 33007 Oviedo, Spain
- Center of
Research on Nanomaterials and Nanotechnology, CINN (CSIC−Universidad de Oviedo), El Entrego 33940, Spain
| | - Rosalía Serna
- Laser
Processing Group, Instituto de Óptica,
IO-CSIC, C/Serrano 121, 28006 Madrid, Spain
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21
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Zhao D, Zhang SR, Fan YP, Liu BZ, Zhang RJ. Thermally Stable Phosphor KBa2(PO3)5:Eu2+ with Broad-Band Cyan Emission Caused by Multisite Occupancy of Eu2+. Inorg Chem 2020; 59:8789-8799. [DOI: 10.1021/acs.inorgchem.0c00428] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Dan Zhao
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, P. R. China
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, Jilin 130012, P. R. China
| | - Shi-Rui Zhang
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, P. R. China
| | - Yan-Ping Fan
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, P. R. China
| | - Bao-Zhong Liu
- Henan Key Laboratory of Coal Green Conversion, Henan Polytechnic University, Jiaozuo, Henan 454000, P. R. China
| | - Rui-Juan Zhang
- Henan Key Laboratory of Coal Green Conversion, Henan Polytechnic University, Jiaozuo, Henan 454000, P. R. China
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22
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Dazai T, Yasui S, Taniyama T, Itoh M. Cation-Deficiency-Induced Crystal-Site Engineering for ZnGa2O4:Mn2+ Thin Film. Inorg Chem 2020; 59:8744-8748. [PMID: 32506904 DOI: 10.1021/acs.inorgchem.0c00359] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Takuro Dazai
- Laboratory for Materials and Structures, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Shintaro Yasui
- Laboratory for Materials and Structures, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Tomoyasu Taniyama
- Laboratory for Materials and Structures, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
- Department of Physics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan
| | - Mitsuru Itoh
- Laboratory for Materials and Structures, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
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23
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Chantelle L, Menezes de Oliveira AL, Kennedy BJ, Maul J, da Silva MRS, Duarte TM, Albuquerque AR, Sambrano JR, Landers R, Siu-Li M, Longo E, dos Santos IMG. Probing the Site-Selective Doping in SrSnO3:Eu Oxides and Its Impact on the Crystal and Electronic Structures Using Synchrotron Radiation and DFT Simulations. Inorg Chem 2020; 59:7666-7680. [PMID: 32338503 DOI: 10.1021/acs.inorgchem.0c00664] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Laís Chantelle
- NPE-LACOM, Dept de Quı́mica, Universidade Federal da Paraı́ba, João Pessoa - Paraı́ba 58051−085, Brazil
| | - André L. Menezes de Oliveira
- NPE-LACOM, Dept de Quı́mica, Universidade Federal da Paraı́ba, João Pessoa - Paraı́ba 58051−085, Brazil
- School of Chemistry, The University of Sydney, Sydney - New South Wales 2006, Australia
| | - Brendan J. Kennedy
- School of Chemistry, The University of Sydney, Sydney - New South Wales 2006, Australia
| | - Jefferson Maul
- Dipartimento di Chimica, Universita di Torino, via Giuria 5, 10125, Torino, Italy
| | - Márcia R. S. da Silva
- NPE-LACOM, Dept de Quı́mica, Universidade Federal da Paraı́ba, João Pessoa - Paraı́ba 58051−085, Brazil
| | - Thiago M. Duarte
- NPE-LACOM, Dept de Quı́mica, Universidade Federal da Paraı́ba, João Pessoa - Paraı́ba 58051−085, Brazil
| | - Anderson R. Albuquerque
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Natal - Rio Grande do Norte 59078-970, Brazil
| | - Julio R. Sambrano
- Grupo de Simulação e Modelagem Molecular, Universidade Estadual Paulista, Bauru − São Paulo 17033-360, Brazil
| | - Richard Landers
- Instituto de Fı́sica Gleb Wataghin, Universidade Estadual de Campinas, Campinas − São Paulo 13083-859, Brazil
| | - Máximo Siu-Li
- Instituto de Física, Universidade de São Paulo, São Carlos - São Paulo 13563-120, Brazil
| | - Elson Longo
- LIEC/INCTMN, Universidade Estadual Paulista, Araraquara - São Paulo 14800-060, Brazil
| | - Iêda M. G. dos Santos
- NPE-LACOM, Dept de Quı́mica, Universidade Federal da Paraı́ba, João Pessoa - Paraı́ba 58051−085, Brazil
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24
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Xia M, Zhang Y, Li M, Zhong Y, Gu S, Zhou N, Zhou Z. High thermal stability and blue-violet emitting phosphor CaYAlO4:Ti4+ with enhanced emission by Ca2+ vacancies. J RARE EARTH 2020. [DOI: 10.1016/j.jre.2019.04.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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25
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Liu J, Wang Z, Li X, Meng X, Qiu K, Wang D, Zhao J, Lai W, Yang Z, Li P. Achieving tunable emitting YAl3(BO3)4:Eu phosphors by substituting cations (Sr2+, Ca2+, Ga3+, In3+) and controlling BO3 group polarizability. CrystEngComm 2020. [DOI: 10.1039/d0ce00505c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
To explore the influence of the luminescence characteristics and valence state of Eu ions, a series of YAl3(BO3)4−m(PO4)m:0.05Eu, Y0.925−xACxLxBO:0.05Eu, Y0.925−yASyLyBO:0.05Eu, Y0.925−zAGzBO:0.05Eu and Y0.925−wAIwBO:0.05Eu phosphors are synthesized.
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26
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Wang L, Xu W, Li W, Xie M, Zheng Y. A Water‐Stable Uranyl Organic Framework as a Highly Selective and Sensitive Bifunctional Luminescent Probe for Fe
3+
and Tetracycline Hydrochloride. Chem Asian J 2019; 14:4246-4254. [DOI: 10.1002/asia.201901124] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 09/11/2019] [Indexed: 01/16/2023]
Affiliation(s)
- Long Wang
- State Key Laboratory Base of Novel Functional Materials and Preparation ScienceChemistry Institute for Synthesis and Green ApplicationSchool of Materials Science & Chemical EngineeringNingbo University Ningbo Zhejiang 315211 China
| | - Wei Xu
- State Key Laboratory Base of Novel Functional Materials and Preparation ScienceChemistry Institute for Synthesis and Green ApplicationSchool of Materials Science & Chemical EngineeringNingbo University Ningbo Zhejiang 315211 China
| | - Wen‐Ying Li
- State Key Laboratory Base of Novel Functional Materials and Preparation ScienceChemistry Institute for Synthesis and Green ApplicationSchool of Materials Science & Chemical EngineeringNingbo University Ningbo Zhejiang 315211 China
| | - Miao Xie
- State Key Laboratory Base of Novel Functional Materials and Preparation ScienceChemistry Institute for Synthesis and Green ApplicationSchool of Materials Science & Chemical EngineeringNingbo University Ningbo Zhejiang 315211 China
| | - Yue‐Qing Zheng
- State Key Laboratory Base of Novel Functional Materials and Preparation ScienceChemistry Institute for Synthesis and Green ApplicationSchool of Materials Science & Chemical EngineeringNingbo University Ningbo Zhejiang 315211 China
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27
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Kniec K, Marciniak L. Different Strategies of Stabilization of Vanadium Oxidation States in Lagao 3 Nanocrystals. Front Chem 2019; 7:520. [PMID: 31396506 PMCID: PMC6664484 DOI: 10.3389/fchem.2019.00520] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Accepted: 07/08/2019] [Indexed: 12/16/2022] Open
Abstract
The spectroscopic properties of LaGaO3, doped with V ions, were examined in terms of the possibility of the stabilization of particular vanadium oxidation states. It was shown that three different approaches may be applied in order to control the ionic charge of vanadium, namely, charge compensation, via incorporation of Mg2+/Ca2+ ions, citric acid (CA)-assisted synthesis, with various CA concentrations and grain size tuning through annealing temperature regulation. Each of utilized method enables the significant reduction of V5+ emission band at 520 nm associated with the V4+→ O2- CT transition in respect to the 2E→ 2T2 emission band of V4+ at 645 nm and 1E2 → 3T1g emission band of V3+ at 712 nm. The most efficient V oxidation state stabilization was obtained by the use of grain size modulation, which bases on fact of different localization of the V ions of given charge in the nanoparticles. Moreover, the CA-assisted synthesis of LaGaO3:V determines V valence states but also provides significant separation of the nanograins. It was found that superior charge compensation was achieved when Mg2+ ions were introduced in the matrix, due the more efficient lability, resulting from the comparable ionic radii between Mg2+ and V ions.
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Affiliation(s)
- Karolina Kniec
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw, Poland
| | - Lukasz Marciniak
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw, Poland
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28
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Sakthivel T, Venugopal G, Durairaj A, Vasanthkumar S, Huang X. Utilization of the internal electric field in semiconductor photocatalysis: A short review. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2018.12.034] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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29
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Yu H, Zhang B, Chen X, Qian X, Jiang D, Wu Q, Wang J, Xu J, Su L. Color-tunable visible photoluminescence of Eu:CaF 2 single crystals: variations of valence state and local lattice environment of Eu ions. OPTICS EXPRESS 2019; 27:523-532. [PMID: 30696137 DOI: 10.1364/oe.27.000523] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 11/23/2018] [Indexed: 06/09/2023]
Abstract
In this article, Eu-activated CaF2 single crystals were synthesized by Bridgman-Stockbarge method. The dependence of photoluminescence properties of Eu: CaF2 crystals in UV-Vis regions on EuF3 doping concentrations were investigated. While the EuF3 doping concentration is increased from 0.6% to 6.0%, the CIE (Commission Internationale de L'Eclairage) color coordinates of Eu: CaF2 crystals can be tuned from (0.28, 0.12) to (0.60, 0.38), corresponding to the luminescence color from blue to orange. XPS (X-ray Photoelectron Spectroscopy) measurements indicated that Eu2+ and Eu3+ ions both existed in the crystals. With EuF3 doping concentration increasing, the proportion of Eu3+ ions increase from 16.73% to 39.00%, while that of Eu2+ ions decrease from 83.27% to 61.00%. Moreover, the integrated intensity ratio (R) of the 614 nm to 593 nm of Eu3+ ions increase from 0.38 to 0.44, indicating the local lattice environment symmetry of Eu3+ ions become lower with higher EuF3 doping concentrations. Furthermore, the CIE chromaticity coordinates of Eu: CaF2 crystals greatly depend on the excitation wavelength. The warm white-light emission has been realized in 0.6%Eu: CaF2 crystal when the excitation wavelength is around 322 nm.
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30
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Li H, Liang Y, Zhu Y, Liu S, Chen J, Zhang H, Chen Y. Investigation of local structure distortion and electron cloud interaction on emission-band broadening induced by the concentration perturbation effect of cation substitution in BaY 2Si 3O 10:Eu phosphors. CrystEngComm 2019. [DOI: 10.1039/c9ce00778d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Here, we conceived a concentration perturbation effect to obtain cyan-emitting phosphors based on local structure distortion and electron cloud interaction.
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Affiliation(s)
- Haoran Li
- Engineering Research Center of Nano-Geomaterials of Ministry of Education
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan 430074
- China
| | - Yujun Liang
- Engineering Research Center of Nano-Geomaterials of Ministry of Education
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan 430074
- China
| | - Yingli Zhu
- Engineering Research Center of Nano-Geomaterials of Ministry of Education
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan 430074
- China
| | - Shiqi Liu
- Engineering Research Center of Nano-Geomaterials of Ministry of Education
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan 430074
- China
| | - Jiahui Chen
- Engineering Research Center of Nano-Geomaterials of Ministry of Education
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan 430074
- China
| | - Hang Zhang
- Engineering Research Center of Nano-Geomaterials of Ministry of Education
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan 430074
- China
| | - Yongjun Chen
- State Key Laboratory of Marine Resource Utilization in South China Sea
- School of Materials Science and Engineering
- Hainan University
- Haikou 570228
- China
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31
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Tunable luminescence and energy transfer of Dy3+-activated Bi4Si3O12--Bi4Ge3O12 pseudo-system phosphor for warm white-emitting. J SOLID STATE CHEM 2018. [DOI: 10.1016/j.jssc.2018.08.038] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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32
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Yu C, Cao M, Yan D, Lou S, Xia C, Xuan T, Xie RJ, Li H. Synthesis of Eu 2+/Eu 3+ Co-Doped Gallium oxide nanocrystals as a full colour converter for white light emitting diodes. J Colloid Interface Sci 2018; 530:52-57. [PMID: 29960908 DOI: 10.1016/j.jcis.2018.06.047] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 06/15/2018] [Accepted: 06/20/2018] [Indexed: 01/08/2023]
Abstract
Eu2+ and Eu3+ co-doped Ga2O3 nanocrystals (Ga2O3:Eu NCs) were synthesized in an organic phase at a low reaction temperature of 300 °C. The surface of Ga2O3:Eu NCs was passivated by oleylamine (OAm) and acetylacetone (acac). The coexistence of Eu2+ and Eu3+ as well as passivation by acac and OAm enable Ga2O3 to be excited in the broad spectral range of 200-500 nm. The broadened absorption band is attributed to the strong acac → Ln(III) ligand to the metal charge transfer transition at ∼370 nm, Eu(III) f-f allowed 7F0 → 5L6 transition at 395 nm, and 7F0 → 5D2 transition at 465 nm, as well as the efficient electronic transition of Eu(II) 4f → 5d at ∼400 nm. Under near-ultraviolet excitation, white light emission can be achieved by combining orange-red light from f-f electronic transition of Eu(III) with blue-green-yellow light from Ga2O3 oxygen defects levels. Furthermore, the resultant Ga2O3:Eu NCs with optimized quantum yield of 14.5% were coated onto 395 nm near-ultraviolet chips to fabricate a white light emitting diode. It exhibits a luminous efficiency of 34 lm/W, CIE colour coordinate of (0.2964, 0.2831) and high colour rendering index of 80.
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Affiliation(s)
- Caiyan Yu
- Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Materials Science, East China Normal University, Shanghai 200062, PR China
| | - Mengmeng Cao
- Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Materials Science, East China Normal University, Shanghai 200062, PR China
| | - Dong Yan
- Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Materials Science, East China Normal University, Shanghai 200062, PR China
| | - Sunqi Lou
- Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Materials Science, East China Normal University, Shanghai 200062, PR China
| | - Chao Xia
- Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Materials Science, East China Normal University, Shanghai 200062, PR China
| | - Tongtong Xuan
- Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, PR China.
| | - Rong-Jun Xie
- College of Materials, Xiamen University, Xiamen 361005, PR China.
| | - Huili Li
- Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Materials Science, East China Normal University, Shanghai 200062, PR China.
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33
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Hu Q, Deng Z, Hu M, Zhao A, Zhang Y, Tan Z, Niu G, Wu H, Tang J. X-ray scintillation in lead-free double perovskite crystals. Sci China Chem 2018. [DOI: 10.1007/s11426-018-9308-2] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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34
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Pan Y, Wang W, Zhu Y, Xu H, Zhou L, Noh HM, Jeong JH, Liu X, Li L. Eu 3+/2+ co-doping system induced by adjusting Al/Y ratio in Eu doped CaYAlO 4: preparation, bond energy, site preference and 5D 0- 7F 4 transition intensity. RSC Adv 2018; 8:23981-23989. [PMID: 35540276 PMCID: PMC9081747 DOI: 10.1039/c8ra04432e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 06/25/2018] [Indexed: 12/02/2022] Open
Abstract
CaY1-x Al1+x O4:2%Eu (x = 0, 0.1, 0.2) phosphors have been synthesized via a solid-state reaction process. XRD patterns indicate that they are pure phase. The photoluminescence properties of the CaY1-x Al1+x O4:2%Eu phosphors exhibit both the blue emission of Eu2+ (4f65d1-4f7) and red-orange emission of Eu3+ (5D0-7F1,2,3,4) under UV light excitation, which showed that the Eu3+/2+ co-doping system was obtained by adjusting the Al/Y ratio. Eu3+ ions can be reduced to Eu2+ ions when the Al/Y ratio was changed. In this work, the bond energy method was used to determine and explain the mechanism of the site occupation of Eu ions entering the host matrix. Also, the emission spectrum showed an unusual comparable intensity 5D0-7F4 transition peak. The relative intensity of 5D0-7F2 and 5D0-7F4 can be stabilized by changing the relative proportions of Al3+ and Y3+. Furthermore, this was explained by the J-O theory.
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Affiliation(s)
- Yu Pan
- Hubei Collaborative Innovation Center for Advanced Organochemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Applications of Organic Functional Molecules, Hubei University Wuhan 430062 China
| | - Wenjun Wang
- Hubei Collaborative Innovation Center for Advanced Organochemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Applications of Organic Functional Molecules, Hubei University Wuhan 430062 China
| | - Yuhan Zhu
- Hubei Collaborative Innovation Center for Advanced Organochemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Applications of Organic Functional Molecules, Hubei University Wuhan 430062 China
| | - Haibing Xu
- Hubei Collaborative Innovation Center for Advanced Organochemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Applications of Organic Functional Molecules, Hubei University Wuhan 430062 China
| | - Liqun Zhou
- Hubei Collaborative Innovation Center for Advanced Organochemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Applications of Organic Functional Molecules, Hubei University Wuhan 430062 China
| | - Hyeon Mi Noh
- Department of Physics, Pukyong National University Busan 608-737 Korea
| | - Jung Hyun Jeong
- Department of Physics, Pukyong National University Busan 608-737 Korea
| | - Xiaoguang Liu
- Hubei Collaborative Innovation Center for Advanced Organochemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Applications of Organic Functional Molecules, Hubei University Wuhan 430062 China
| | - Ling Li
- Hubei Collaborative Innovation Center for Advanced Organochemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Applications of Organic Functional Molecules, Hubei University Wuhan 430062 China
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35
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Annadurai G, Devakumar B, Guo H, Vijayakumar R, Li B, Sun L, Huang X, Wang K, Sun XW. Novel Eu 3+-activated Ba 2Y 5B 5O 17 red-emitting phosphors for white LEDs: high color purity, high quantum efficiency and excellent thermal stability. RSC Adv 2018; 8:23323-23331. [PMID: 35540142 PMCID: PMC9081613 DOI: 10.1039/c8ra03059f] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 05/23/2018] [Indexed: 12/02/2022] Open
Abstract
Eu3+-activated Ba2Y5B5O17 (Ba2Y5-x Eu x B5O17; x = 0.1-1) red-emitting phosphors were synthesized by the conventional high temperature solid-state reaction method in an air atmosphere. Powder X-ray diffraction (XRD) analysis confirmed the pure phase formation of the as-synthesized phosphors. Morphological studies were performed using field emission-scanning electron microscopy (FE-SEM). The photoluminescence spectra, lifetimes, color coordinates and internal quantum efficiency (IQE) as well as the temperature-dependent emission spectra were investigated systematically. Upon 396 nm excitation, Ba2Y5-x Eu x B5O17 showed red emission peaking at 616 nm which was attributed to the 5D0 → 7F2 electric dipole transition of Eu3+ ions. Meanwhile, the influences of different concentrations of Eu3+ ions on the PL intensity were also discussed. The optimum concentration of Eu3+ ions in the Ba2Y5-x Eu x B5O17 phosphors was found to be x = 0.8. The concentration quenching mechanism was attributed to the dipole-dipole interaction and the critical distance (R c) for energy transfer among Eu3+ ions was determined to be 5.64 Å. The asymmetry ratio [(5D0 → 7F2)/(5D0 → 7F1)] of Ba2Y4.2Eu0.8B5O17 phosphors was calculated to be 3.82. The fluorescence decay lifetimes were also determined for Ba2Y5-x Eu x B5O17 phosphors. In addition, the CIE color coordinates of the Ba2Y4.2Eu0.8B5O17 phosphors (x = 0.653, y = 0.345) were found to be very close to the National Television System Committee (NTSC) standard values (x = 0.670, y = 0.330) of red emission and also showed high color purity (∼94.3%). The corresponding internal quantum efficiency of the Ba2Y4.2Eu0.8B5O17 sample was measured to be 47.2%. Furthermore, the as-synthesized phosphors exhibited good thermal stability with an activation energy of 0.282 eV. The above results revealed that the red emitting Ba2Y4.2Eu0.8B5O17 phosphors could be potential candidates for application in near-UV excited white light emitting diodes.
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Affiliation(s)
- G Annadurai
- Key Lab of Advanced Transducers and Intelligent Control System, Ministry of Education and Shanxi Province, College of Physics and Optoelectronics, Taiyuan University of Technology Taiyuan 030024 P. R. China
| | - Balaji Devakumar
- Key Lab of Advanced Transducers and Intelligent Control System, Ministry of Education and Shanxi Province, College of Physics and Optoelectronics, Taiyuan University of Technology Taiyuan 030024 P. R. China
| | - Heng Guo
- Key Lab of Advanced Transducers and Intelligent Control System, Ministry of Education and Shanxi Province, College of Physics and Optoelectronics, Taiyuan University of Technology Taiyuan 030024 P. R. China
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology Shenzhen 518055 P. R. China
| | - R Vijayakumar
- Key Lab of Advanced Transducers and Intelligent Control System, Ministry of Education and Shanxi Province, College of Physics and Optoelectronics, Taiyuan University of Technology Taiyuan 030024 P. R. China
| | - Bin Li
- Key Lab of Advanced Transducers and Intelligent Control System, Ministry of Education and Shanxi Province, College of Physics and Optoelectronics, Taiyuan University of Technology Taiyuan 030024 P. R. China
| | - Liangling Sun
- Key Lab of Advanced Transducers and Intelligent Control System, Ministry of Education and Shanxi Province, College of Physics and Optoelectronics, Taiyuan University of Technology Taiyuan 030024 P. R. China
| | - Xiaoyong Huang
- Key Lab of Advanced Transducers and Intelligent Control System, Ministry of Education and Shanxi Province, College of Physics and Optoelectronics, Taiyuan University of Technology Taiyuan 030024 P. R. China
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology Shenzhen 518055 P. R. China
| | - Kai Wang
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology Shenzhen 518055 P. R. China
| | - Xiao Wei Sun
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology Shenzhen 518055 P. R. China
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36
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Wen J, Guo Z, Guo H, Ning L, Duan CK, Huang Y, Zhan S, Yin M. Thermodynamic Stabilities, Electronic Properties, and Optical Transitions of Intrinsic Defects and Lanthanide Ions (Ce3+, Eu2+, and Eu3+) in Li2SrSiO4. Inorg Chem 2018; 57:6142-6151. [DOI: 10.1021/acs.inorgchem.8b00752] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | - Hai Guo
- Department of Physics, Zhejiang Normal University, Jinhua 321004, China
| | - Lixin Ning
- Anhui Province Key Laboratory of Optoelectric Materials Science and Technology, Department of Physics, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Chang-Kui Duan
- Department of Physics, University of Science and Technology of China, Hefei 230026, China
| | - Yucheng Huang
- Anhui Province Key Laboratory of Optoelectric Materials Science and Technology, Department of Physics, Anhui Normal University, Wuhu, Anhui 241000, China
| | | | - Min Yin
- Department of Physics, University of Science and Technology of China, Hefei 230026, China
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37
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Suresh C, Nagabhushana H, Darshan G, Basavaraj R, Kavyashree D, Sharma S, Arulmozhi A, Daruka Prasad B, Amith Yadav H. Facile LaOF: Sm 3+ based labeling agent and their applications in residue chemistry of latent fingerprint and cheiloscopy under UV–visible light. ARAB J CHEM 2018. [DOI: 10.1016/j.arabjc.2017.09.014] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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38
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Zhao SN, Wang G, Poelman D, Voort PVD. Luminescent Lanthanide MOFs: A Unique Platform for Chemical Sensing. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E572. [PMID: 29642458 PMCID: PMC5951456 DOI: 10.3390/ma11040572] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 04/04/2018] [Accepted: 04/05/2018] [Indexed: 12/31/2022]
Abstract
In recent years, lanthanide metal-organic frameworks (LnMOFs) have developed to be an interesting subclass of MOFs. The combination of the characteristic luminescent properties of Ln ions with the intriguing topological structures of MOFs opens up promising possibilities for the design of LnMOF-based chemical sensors. In this review, we present the most recent developments of LnMOFs as chemical sensors by briefly introducing the general luminescence features of LnMOFs, followed by a comprehensive investigation of the applications of LnMOF sensors for cations, anions, small molecules, nitroaromatic explosives, gases, vapors, pH, and temperature, as well as biomolecules.
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Affiliation(s)
- Shu-Na Zhao
- Department of Chemistry, Center for Ordered Materials, Organometallics and Catalysis (COMOC), Ghent University, Krijgslaan 281 (S3), 9000 Gent, Belgium.
- LumiLab, Department of Solid State Sciences, Ghent University, Krijgslaan 281 (S1), 9000 Gent, Belgium.
| | - Guangbo Wang
- Department of Chemistry, Center for Ordered Materials, Organometallics and Catalysis (COMOC), Ghent University, Krijgslaan 281 (S3), 9000 Gent, Belgium.
| | - Dirk Poelman
- LumiLab, Department of Solid State Sciences, Ghent University, Krijgslaan 281 (S1), 9000 Gent, Belgium.
| | - Pascal Van Der Voort
- Department of Chemistry, Center for Ordered Materials, Organometallics and Catalysis (COMOC), Ghent University, Krijgslaan 281 (S3), 9000 Gent, Belgium.
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39
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Chatterjee R, Saha S, Sen D, Panigrahi K, Ghorai UK, Das GC, Chattopadhyay KK. Neutralizing the Charge Imbalance Problem in Eu 3+-Activated BaAl 2O 4 Nanophosphors: Theoretical Insights and Experimental Validation Considering K + Codoping. ACS OMEGA 2018; 3:788-800. [PMID: 31457929 PMCID: PMC6641287 DOI: 10.1021/acsomega.7b01525] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 01/04/2018] [Indexed: 05/05/2023]
Abstract
In recent years, rare-earth-doped nanophosphors have attracted great attention in the field of luminescent materials for advanced solid-state lighting and high-resolution display applications. However, the low efficiency of concurrent red phosphors creates a major bottleneck for easy commercialization of these devices. In this work, intense red-light-emitting K+-codoped BaAl2O4:Eu3+ nanophosphors having an average crystallite size of 54 nm were synthesized via a modified sol-gel method. The derived nanophosphors exhibit strong red emission produced by the 5D0 → 7F J (J = 0, 1, 2, 3, 4) transitions of Eu3+ upon UV and low-voltage electron beam excitation. Comparative photoluminescence (PL) analysis is executed for Eu3+-activated and K+-coactivated BaAl2O4:Eu3+ nanophosphors, demonstrating remarkable enhancement in PL intensity as well as thermal stability due to K+ codoping. The origin of this PL enhancement is also analyzed from first-principles calculations using density functional theory. Achievement of charge compensation with the addition of a K+ coactivator plays an important role in increasing the radiative lifetime and color purity of the codoped nanophosphors. Obtained results substantially approve the promising prospects of this nanophosphor in the promptly growing field of solid-state lighting and field emission display devices.
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Affiliation(s)
- Rituparna Chatterjee
- School
of Materials Science and Nanotechnology and Department of Physics, Jadavpur University, Kolkata 700032, India
| | - Subhajit Saha
- School
of Materials Science and Nanotechnology and Department of Physics, Jadavpur University, Kolkata 700032, India
| | - Dipayan Sen
- School
of Materials Science and Nanotechnology and Department of Physics, Jadavpur University, Kolkata 700032, India
| | - Karamjyoti Panigrahi
- School
of Materials Science and Nanotechnology and Department of Physics, Jadavpur University, Kolkata 700032, India
| | - Uttam Kumar Ghorai
- Department
of Industrial Chemistry & Swami Vivekananda Research Centre, Ramakrishna Mission Vidyamandira, Belur Math, Howrah 711202, India
| | - Gopes Chandra Das
- School
of Materials Science and Nanotechnology and Department of Physics, Jadavpur University, Kolkata 700032, India
| | - Kalyan Kumar Chattopadhyay
- School
of Materials Science and Nanotechnology and Department of Physics, Jadavpur University, Kolkata 700032, India
- E-mail:
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40
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Sankarasubramanian K, Devakumar B, Annadurai G, Sun L, Zeng YJ, Huang X. Novel SrLaAlO4:Mn4+deep-red emitting phosphors with excellent responsiveness to phytochrome PFRfor plant cultivation LEDs: synthesis, photoluminescence properties, and thermal stability. RSC Adv 2018; 8:30223-30229. [PMID: 35546816 PMCID: PMC9085373 DOI: 10.1039/c8ra06356g] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Accepted: 08/22/2018] [Indexed: 11/25/2022] Open
Abstract
Herein, novel rare-earth-free Mn4+-doped SrLaAlO4 deep-red emitting phosphors were successfully synthesized via a traditional solid-state reaction method. The crystal structure and phase purity of the as-prepared samples were confirmed by XRD Rietveld refinement. Photoluminescence properties of SrLaAlO4:Mn4+ phosphors were examined in detail using photoluminescence spectra, decay lifetimes, temperature-dependent emission spectra and internal quantum efficiency measurements. The excitation spectrum obtained by monitoring at 730 nm contained two excitation bands centered at 364 and 520 nm within the range of 200–550 nm due to the Mn4+–O2− charge-transfer band and the 4A2g → 4T1g, 4T2g transitions of the Mn4+ ions. Under the 364 nm excitation, the SrLaAlO4:Mn4+ phosphors exhibited an intense deep-red emission band in 610–790 nm wavelength range peaking at 730 nm, which was assigned to the 2Eg → 4A2g transition of Mn4+ ions. The deep red emission showed excellent responsiveness to phytochrome PFR, revealing that the SrLaAlO4:0.4% Mn4+ phosphors possessed a possible application in deep-red light-emitting diodes (LEDs) for plant cultivation. The optimal doping concentration of Mn4+ ions was found to be 0.4 mol%. The critical distance Rc for energy transfer among Mn4+ ions was determined to be 5.86 Å and the concentration quenching mechanism was confirmed to be the electric dipole–dipole interaction. In addition, the Commission International de I'Eclairage (CIE) colour coordinates of the SrLaAlO4:0.4% Mn4+ phosphors (0.734, 0.266) were located in the deep red region and the corresponding internal quantum efficiency was measured to be about 29%. The above results confirmed that the as-prepared SrLaAlO4:0.4% Mn4+ deep red emitting phosphors might be a potential candidate for plant cultivation LEDs. Novel Mn4+ activated SrLaAlO4 deep-red emitting phosphors with excellent responsiveness to phytochrome PFR were developed for plant cultivation LEDs.![]()
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Affiliation(s)
- K. Sankarasubramanian
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Balaji Devakumar
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - G. Annadurai
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Liangling Sun
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Yu-Jia Zeng
- Shenzhen Key Laboratory of Laser Engineering
- College of Optoelectronic Engineering
- Shenzhen University
- Shenzhen 518060
- P. R. China
| | - Xiaoyong Huang
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
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41
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Das A, Saha S, Panigrahi K, Mitra A, Chatterjee R, Ghorai UK, Das B, Chattopadhyay KK. Morphology control and photoluminescence properties of Eu3+-activated Y4Al2O9 nanophosphors for solid state lighting applications. CrystEngComm 2018. [DOI: 10.1039/c8ce00289d] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Spherical Eu3+:Y4Al2O9 nanophosphors exhibit brilliant PL behavior with enhanced color purity and excited state lifetime.
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Affiliation(s)
- Antika Das
- School of Materials Science and Nanotechnology
- Jadavpur University
- Kolkata-700032
- India
| | - Subhajit Saha
- School of Materials Science and Nanotechnology
- Jadavpur University
- Kolkata-700032
- India
| | - Karamjyoti Panigrahi
- School of Materials Science and Nanotechnology
- Jadavpur University
- Kolkata-700032
- India
| | - Anuradha Mitra
- Department of Physics
- Jadavpur University
- Kolkata-700032
- India
| | - Rituparna Chatterjee
- School of Materials Science and Nanotechnology
- Jadavpur University
- Kolkata-700032
- India
| | - Uttam Kumar Ghorai
- Department of Industrial Chemistry and Applied Chemistry
- Swami Vivekananda Research Center
- Ramakrishna Mission Vidyamandira
- Howrah-711202
- India
| | - Biswajit Das
- Department of Physics
- Jadavpur University
- Kolkata-700032
- India
| | - Kalyan Kumar Chattopadhyay
- School of Materials Science and Nanotechnology
- Jadavpur University
- Kolkata-700032
- India
- Department of Physics
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42
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Zhu Y, Liang Y, Liu S, Li H, Chen J, Lei W. A strategy for realizing tunable luminescence and full-color emission in Sr3Gd2(Si3O9)2:Eu phosphors by introducing dual functional Mn2+. Inorg Chem Front 2018. [DOI: 10.1039/c8qi00731d] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The introduced Mn2+ ion can act as both an activator and a structure regulator in the SGSO:Eu system to achieve full-color emission and tunable luminescence of SGSO:0.03Eu,Mn phosphors.
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Affiliation(s)
- Yingli Zhu
- Engineering Research Center of Nano-Geomaterials of Ministry of Education
- China University of Geosciences
- Wuhan 430074
- People's Republic of China
- Faculty of Materials Science and Chemistry
| | - Yujun Liang
- Engineering Research Center of Nano-Geomaterials of Ministry of Education
- China University of Geosciences
- Wuhan 430074
- People's Republic of China
- Faculty of Materials Science and Chemistry
| | - Shiqi Liu
- Engineering Research Center of Nano-Geomaterials of Ministry of Education
- China University of Geosciences
- Wuhan 430074
- People's Republic of China
- Faculty of Materials Science and Chemistry
| | - Haoran Li
- Engineering Research Center of Nano-Geomaterials of Ministry of Education
- China University of Geosciences
- Wuhan 430074
- People's Republic of China
- Faculty of Materials Science and Chemistry
| | - Jiahui Chen
- Engineering Research Center of Nano-Geomaterials of Ministry of Education
- China University of Geosciences
- Wuhan 430074
- People's Republic of China
- Faculty of Materials Science and Chemistry
| | - Wen Lei
- Engineering Research Center of Nano-Geomaterials of Ministry of Education
- China University of Geosciences
- Wuhan 430074
- People's Republic of China
- Faculty of Materials Science and Chemistry
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43
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Wang W, Pan Y, Zhu Y, Xu H, Zhou L, Noh HM, Jeong JH, Liu X, Li L. Bond energy, site preferential occupancy and Eu2+/3+ co-doping system induced by Eu3+ self-reduction in Ca10M(PO4)7 (M = Li, Na, K) crystals. Dalton Trans 2018; 47:6507-6518. [DOI: 10.1039/c8dt00749g] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Ca10M(PO4)7:Eu (M = Li, Na, K) phosphors have been synthesized via a solid-state reaction process, their phase purity was examined using XRD patterns, and Rietveld refinement confirmed that the Ca10Li(PO4)7, Ca10Na(PO4)7 and Ca10K(PO4)7 are pure phases.
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Affiliation(s)
- Wenjun Wang
- Hubei Collaborative Innovation Center for Advanced Organochemical Materials
- Ministry-of-Education Key Laboratory for the Synthesis and Applications of Organic Functional Molecules
- Hubei University
- Wuhan
- China
| | - Yu Pan
- Hubei Collaborative Innovation Center for Advanced Organochemical Materials
- Ministry-of-Education Key Laboratory for the Synthesis and Applications of Organic Functional Molecules
- Hubei University
- Wuhan
- China
| | - Yuhan Zhu
- Hubei Collaborative Innovation Center for Advanced Organochemical Materials
- Ministry-of-Education Key Laboratory for the Synthesis and Applications of Organic Functional Molecules
- Hubei University
- Wuhan
- China
| | - Haibing Xu
- Hubei Collaborative Innovation Center for Advanced Organochemical Materials
- Ministry-of-Education Key Laboratory for the Synthesis and Applications of Organic Functional Molecules
- Hubei University
- Wuhan
- China
| | - Liqun Zhou
- Hubei Collaborative Innovation Center for Advanced Organochemical Materials
- Ministry-of-Education Key Laboratory for the Synthesis and Applications of Organic Functional Molecules
- Hubei University
- Wuhan
- China
| | - Hyeon Mi Noh
- Department of Physics
- Pukyong National University
- Busan 608-737
- Korea
| | - Jung Hyun Jeong
- Department of Physics
- Pukyong National University
- Busan 608-737
- Korea
| | - Xiaoguang Liu
- Hubei Collaborative Innovation Center for Advanced Organochemical Materials
- Ministry-of-Education Key Laboratory for the Synthesis and Applications of Organic Functional Molecules
- Hubei University
- Wuhan
- China
| | - Ling Li
- Hubei Collaborative Innovation Center for Advanced Organochemical Materials
- Ministry-of-Education Key Laboratory for the Synthesis and Applications of Organic Functional Molecules
- Hubei University
- Wuhan
- China
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44
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Zhang Q, Wang X, Ding X, Wang Y. A Potential Red-Emitting Phosphor BaZrGe3O9:Eu3+ for WLED and FED Applications: Synthesis, Structure, and Luminescence Properties. Inorg Chem 2017; 56:6990-6998. [DOI: 10.1021/acs.inorgchem.7b00591] [Citation(s) in RCA: 116] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Qiang Zhang
- Key Laborary of Special Function Materials and Structure Design, Ministry of Education, Department of Materials Science, School of Physical Science and Technology, National & local Joint Engineering Laboratory for Optical Conversion Materials and Technology, Lanzhou University, Tianshui South Road No. 222, Lanzhou, Gansu 730000, P. R. China
| | - Xicheng Wang
- Key Laborary of Special Function Materials and Structure Design, Ministry of Education, Department of Materials Science, School of Physical Science and Technology, National & local Joint Engineering Laboratory for Optical Conversion Materials and Technology, Lanzhou University, Tianshui South Road No. 222, Lanzhou, Gansu 730000, P. R. China
| | - Xin Ding
- Key Laborary of Special Function Materials and Structure Design, Ministry of Education, Department of Materials Science, School of Physical Science and Technology, National & local Joint Engineering Laboratory for Optical Conversion Materials and Technology, Lanzhou University, Tianshui South Road No. 222, Lanzhou, Gansu 730000, P. R. China
| | - Yuhua Wang
- Key Laborary of Special Function Materials and Structure Design, Ministry of Education, Department of Materials Science, School of Physical Science and Technology, National & local Joint Engineering Laboratory for Optical Conversion Materials and Technology, Lanzhou University, Tianshui South Road No. 222, Lanzhou, Gansu 730000, P. R. China
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45
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Bai Q, Li P, Wang Z, Xu S, Li T, Yang Z. Tuning of luminescence properties by controlling an aid-sintering additive and composition in Na(Ba/Sr/Ca)PO4:Eu2+ for white LEDs. RSC Adv 2017. [DOI: 10.1039/c7ra03557h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
A series of Na(Ba/Sr/Ca)PO4:Eu2+ phosphors were prepared via a high-temperature solid-state reaction method.
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Affiliation(s)
- Qiongyu Bai
- Hebei Key Lab of Optic-electronic Information and Materials
- College of Physics Science & Technology
- Hebei University
- Baoding 071002
- China
| | - Panlai Li
- Hebei Key Lab of Optic-electronic Information and Materials
- College of Physics Science & Technology
- Hebei University
- Baoding 071002
- China
| | - Zhijun Wang
- Hebei Key Lab of Optic-electronic Information and Materials
- College of Physics Science & Technology
- Hebei University
- Baoding 071002
- China
| | - Shuchao Xu
- Hebei Key Lab of Optic-electronic Information and Materials
- College of Physics Science & Technology
- Hebei University
- Baoding 071002
- China
| | - Ting Li
- Hebei Key Lab of Optic-electronic Information and Materials
- College of Physics Science & Technology
- Hebei University
- Baoding 071002
- China
| | - Zhiping Yang
- Hebei Key Lab of Optic-electronic Information and Materials
- College of Physics Science & Technology
- Hebei University
- Baoding 071002
- China
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46
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Zhu Y, Wang J, Zhao M, Chen C, Zheng L, Liu Y, Lei B, Zhang H. Cation–anion substitution induced spectral tuning and thermal stability optimization in Sr2SiO4:Eu phosphors. RSC Adv 2017. [DOI: 10.1039/c6ra28209a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
The cation–anion substitution results in spectral tuning and thermal stability optimization in Sr2Si1−xAlxO4−2xNx:Eu phosphors.
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Affiliation(s)
- Yue Zhu
- Guangdong Provincial Engineering Technology Research Center for Optical Agriculture
- College of Materials and Energy
- South China Agricultural University
- Guangzhou 510642
- P. R. China
| | - Jin Wang
- Guangdong Provincial Engineering Technology Research Center for Optical Agriculture
- College of Materials and Energy
- South China Agricultural University
- Guangzhou 510642
- P. R. China
| | - Mingyi Zhao
- Guangdong Provincial Engineering Technology Research Center for Optical Agriculture
- College of Materials and Energy
- South China Agricultural University
- Guangzhou 510642
- P. R. China
| | - Chonghui Chen
- Guangdong Provincial Engineering Technology Research Center for Optical Agriculture
- College of Materials and Energy
- South China Agricultural University
- Guangzhou 510642
- P. R. China
| | - Lingling Zheng
- Guangdong Provincial Engineering Technology Research Center for Optical Agriculture
- College of Materials and Energy
- South China Agricultural University
- Guangzhou 510642
- P. R. China
| | - Yingliang Liu
- Guangdong Provincial Engineering Technology Research Center for Optical Agriculture
- College of Materials and Energy
- South China Agricultural University
- Guangzhou 510642
- P. R. China
| | - Bingfu Lei
- Guangdong Provincial Engineering Technology Research Center for Optical Agriculture
- College of Materials and Energy
- South China Agricultural University
- Guangzhou 510642
- P. R. China
| | - Haoran Zhang
- Guangdong Provincial Engineering Technology Research Center for Optical Agriculture
- College of Materials and Energy
- South China Agricultural University
- Guangzhou 510642
- P. R. China
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47
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Fang MH, Ni C, Zhang X, Tsai YT, Mahlik S, Lazarowska A, Grinberg M, Sheu HS, Lee JF, Cheng BM, Liu RS. Enhance Color Rendering Index via Full Spectrum Employing the Important Key of Cyan Phosphor. ACS APPLIED MATERIALS & INTERFACES 2016; 8:30677-30682. [PMID: 27802017 DOI: 10.1021/acsami.6b10233] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A new concept called "full-spectrum lighting" has attracted considerable attention in recent years. Traditional devices are usually combined with ultraviolet-light-emitting diode (LED), red, green, and blue phosphors. However, a cyan cavity exists in the 480-520 nm region. Hence, cyan phosphors are needed to compensate for the cavity. (Sr,Ba)5(PO4)3Cl:Eu2+ phosphors feature an extremely unique and tunable photoluminescence spectrum. Nevertheless, the tuning mechanisms of these phosphors remain unclear. In this study, we elucidate the mechanism of the cation size-controlled activator uneven-occupation and reoxidation in (Sr,Ba)5(PO4)3Cl:Eu2+ phosphors. This mechanism could help tune the optical properties of related apatite families and structures with multiple cation sites and strongly uneven occupation of activators and cations. Finally, the package of the LED device is constructed to show that both color rendering index Ra and R9 are higher than 95. Thus, the device could be a potential candidate for full-spectrum lighting.
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Affiliation(s)
- Mu-Huai Fang
- Department of Chemistry, National Taiwan University , Taipei 106, Taiwan
| | - Chenchen Ni
- Department of Chemistry, National Taiwan University , Taipei 106, Taiwan
| | - Xuejie Zhang
- Department of Chemistry, National Taiwan University , Taipei 106, Taiwan
| | - Yi-Ting Tsai
- Department of Chemistry, National Taiwan University , Taipei 106, Taiwan
| | - Sebastian Mahlik
- Institute of Experimental Physics, Faculty of Mathematics, Physics and Informatics, University of Gdańsk , 80-308 Gdańsk, Poland
| | - Agata Lazarowska
- Institute of Experimental Physics, Faculty of Mathematics, Physics and Informatics, University of Gdańsk , 80-308 Gdańsk, Poland
| | - Marek Grinberg
- Institute of Experimental Physics, Faculty of Mathematics, Physics and Informatics, University of Gdańsk , 80-308 Gdańsk, Poland
| | - Hwo-Shuenn Sheu
- National Synchrotron Radiation Research Center , Hsinchu 300, Taiwan
| | - Jyh-Fu Lee
- National Synchrotron Radiation Research Center , Hsinchu 300, Taiwan
| | - Bing-Ming Cheng
- National Synchrotron Radiation Research Center , Hsinchu 300, Taiwan
| | - Ru-Shi Liu
- Department of Chemistry, National Taiwan University , Taipei 106, Taiwan
- Department of Mechanical Engineering and Graduate Institute of Manufacturing Technology, National Taipei University of Technology , Taipei 106, Taiwan
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48
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Zhao YW, Zhang FQ, Zhang XM. Single Component Lanthanide Hybrids Based on Metal-Organic Framework for Near-Ultraviolet White Light LED. ACS APPLIED MATERIALS & INTERFACES 2016; 8:24123-30. [PMID: 27560457 DOI: 10.1021/acsami.6b07724] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Near-UV single-phase white-light phosphor (Eu0.045Tb0.955CPOMBA/La0.6Eu0.1Tb0.3CPOMBA) based on metal-organic framework was prepared by in situ doping isostructural lanthanide MOF with Eu(3+) and Tb(3+), and it is found that the energy can effectively transfer from organic ligand to lanthanides, which can overcome weak absorption under direct excitation of lanthanide ions due to the forbidden f-f transitions. The photoluminescence and thermostability of the new MOF phosphor are investigated, and effective white-light emission is achieved under 365 and 380 nm excitations. By employing Eu0.045Tb0.955CPOMBA as phosphor, we fabricated a near-ultraviolet white-light-emitting diode (n-UV WLED) (365 nm) with low CCT (5733 K), high CRI (Ra = 73.4), and CIE chromaticity coordinate (0.3264, 0.3427). This approach may open new perspectives for developing single-phase UV phosphors.
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Affiliation(s)
- Yan-Wu Zhao
- School of Chemistry & Material Science, Shanxi Normal University , Linfen 041004, People's Republic of China
| | - Fu-Qiang Zhang
- School of Chemistry & Material Science, Shanxi Normal University , Linfen 041004, People's Republic of China
| | - Xian-Ming Zhang
- School of Chemistry & Material Science, Shanxi Normal University , Linfen 041004, People's Republic of China
- Institute of Crystalline Materials, Shanxi University , Taiyuan 030006, People's Republic of China
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49
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Li J, Yan H, Yan F. Synthesis and luminescence characterization of a new yellowish-orange phosphor: Ba2B10O17:Sm3+. LUMINESCENCE 2016; 32:30-34. [DOI: 10.1002/bio.3144] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 03/18/2016] [Accepted: 03/19/2016] [Indexed: 11/12/2022]
Affiliation(s)
- Jiangong Li
- Department of Electronic Science and Engineering; Huanghuai University; Zhumadian 463000 China
| | - Huifang Yan
- Department of Foreign Languages and Literature; Huanghuai University; Zhumadian 463000 China
| | - Fengmei Yan
- Department of Chemistry and Chemical Engineering; Huanghuai University; Zhumadian 463000 China
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50
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Zhang Q, Wang Q, Wang X, Ding X, Wang Y. Luminescence properties of Eu2+-doped BaSi2O5 as an efficient green phosphor for light-emitting devices and wide color gamut field emission displays. NEW J CHEM 2016. [DOI: 10.1039/c6nj01831a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A green-emitting BaSi2O5:Eu2+ phosphor for white light emitting diodes and field emission displays.
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Affiliation(s)
- Qiang Zhang
- Key Laboratory for Special Function Materials and Structural Design of the Ministry of the Education
- School of Physical Science and Technology, Lanzhou University
- Lanzhou
- China
| | - Qian Wang
- Key Laboratory for Special Function Materials and Structural Design of the Ministry of the Education
- School of Physical Science and Technology, Lanzhou University
- Lanzhou
- China
| | - Xicheng Wang
- Key Laboratory for Special Function Materials and Structural Design of the Ministry of the Education
- School of Physical Science and Technology, Lanzhou University
- Lanzhou
- China
| | - Xin Ding
- Key Laboratory for Special Function Materials and Structural Design of the Ministry of the Education
- School of Physical Science and Technology, Lanzhou University
- Lanzhou
- China
| | - Yuhua Wang
- Key Laboratory for Special Function Materials and Structural Design of the Ministry of the Education
- School of Physical Science and Technology, Lanzhou University
- Lanzhou
- China
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