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Singh K, Pradhan P, Priya S, Mund S, Vaidyanathan S. Recent progress in trivalent europium (Eu 3+)-based inorganic phosphors for solid-state lighting: an overview. Dalton Trans 2023; 52:13027-13057. [PMID: 37656121 DOI: 10.1039/d3dt00303e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Narrow band red-emitting phosphors are significant constituents but still a bottleneck for next-generation smart displays and high-performance lighting (solid-state lighting based white light-emitting diodes (WLEDs)) technology. This review emphasizes the fundamental understanding and comprehensive overview of the recent progress and challenges associated with inorganic phosphors or down (wavelength) convertors, providing special attention to narrowband red-emitting oxide phosphors for phosphor-converted WLEDs (pc-WLEDs). In this context, the comprehensive progress on trivalent europium (Eu3+, in scheelite and double perovskite structures) based oxide phosphors with special emphasis on structure-composition-property-correlations is briefly reviewed. Furthermore, the challenges faced in the design of new oxide red phosphors and strategies to improve their absorption, emission efficiency, and future research direction are highlighted.
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Affiliation(s)
- Kasturi Singh
- Department of Chemistry, National Institute of Technology Rourkela, India
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, India.
| | | | - Savita Priya
- Department of Chemistry, National Institute of Technology Rourkela, India
| | - Sibani Mund
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, India.
| | - Sivakumar Vaidyanathan
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, India.
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Dwivedi A, Roy A, Rai SB. Photoluminescence behavior of rare earth doped self-activated phosphors ( i.e. niobate and vanadate) and their applications. RSC Adv 2023; 13:16260-16271. [PMID: 37266502 PMCID: PMC10230514 DOI: 10.1039/d3ra00629h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 05/17/2023] [Indexed: 06/03/2023] Open
Abstract
In the present study, the photoluminescence behaviors of rare earth doped self-activated phosphors are discussed briefly. Different techniques were used to develop these phosphor samples. We prepared pure and rare earth doped phosphor samples to look for their various applications. The structural confirmations and surface morphologies were performed using X-ray diffraction (XRD) and scanning electron microscopy (SEM) measurements, respectively. The upconversion (UC) phenomenon was investigated in Tm3+/Yb3+ and Ho3+/Yb3+ co-doped niobate and vanadate based phosphors, which gave intense blue/NIR and green/red emissions with a 980 nm diode laser as an excitation source. Pure niobate and vanadate phosphor materials are self-activated hosts which give broad blue emission under UV excitation. Upon UV excitation, intense broad blue emission along with sharp emissions due to Tm3+ and Ho3+ ions are observed via energy transfer between niobate/vanadate and rare earth ions. These self-activated hosts show prominent downshifting (DS) behavior. Broad band quantum cutting (QC) was observed in these self-activated hosts, in which a blue emitting photon is converted into two NIR photons by co-doping Yb3+ ions in it. The multimodal (upconversion, downshifting and quantum cutting) behaviors of these phosphors make them very promising in various applications, such as spectral converters to enhance the efficiency of a c-Si solar cell, security ink and color tunable materials.
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Affiliation(s)
- A Dwivedi
- Sunbeam Women's College Varuna Varanasi-221002 India
| | - A Roy
- Department of Physics, Banaras Hindu University Varanasi-221005 India
| | - S B Rai
- Department of Physics, Banaras Hindu University Varanasi-221005 India
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Brunckova H, Rocha LA, Nassar EJ, Moscardini SB, Kolev H. Luminescent properties of neodymium, samarium and europium niobate and tantalate thin films. LUMINESCENCE 2022; 37:642-655. [PMID: 35118783 DOI: 10.1002/bio.4205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 01/27/2021] [Accepted: 01/28/2022] [Indexed: 11/11/2022]
Abstract
Thin films of lanthanide orthoniobate LnNbO4 (LnNO) and orthotantalate LnTaO4 (LnTO), (Ln = Nd, Sm, Eu) were fabricated by sol-gel method with subsequent spin-coating on PbZrO3 /Al2 O3 substrate and annealing at 1000°C. X-ray diffraction patterns showed monoclinic M-LnNbO4 or M´-LnTaO4 , which coexists with orthorhombic or tetragonal phase. X-ray photoelectron spectroscopy demonstrate presence of Nd3+ , Sm3+ /Sm2+ and Eu3+ /Eu2+ ions. Luminescence properties of polymorphic films were investigated. Excitation spectra of PbZrO3 interlayer represented broad bands at 410 and 550 nm, that were assigned to charge transfer bands (CTB). In all films, CTB broad band at around 275 nm related to charge transfer transition of Ln3+ → O2- and NbO4 3- or TaO4 3- groups. In excitation spectra, 4 I9/2 → 4 G5/2 (Nd3+ ), 6 H5/2 → 6 P3/2 (Sm3+ ) and 7 F0 → 5 L6 (Eu3+ ) transitions (at 585, 402 and 395 nm), respectively are found to be more intense than any other Ln3+ transition. The emission spectra showed narrow and intense bands at 1065, 600 and 614 nm ascribed to Nd3+ , Sm3+ and Eu3+ 4f-f intraconfigurational transition 4 F3/2 → 4 I11/2 , 4 G5/2 → 6 H7/2 and 5 D0 → 7 F2 , respectively. The excellent luminescencent properties of films make them new potential group for visible and/or near-infrared applications such as sensors and imaging equipments.
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Affiliation(s)
- Helena Brunckova
- Institute of Materials Research, Slovak Academy of Sciences, Watsonova, Kosice, Slovakia
| | - Lucas Alonso Rocha
- Universidade de Franca, Av. Armando Salles Oliveira, 201, 14.404-600, Franca, SP, Brazil
| | - Eduardo Jose Nassar
- Universidade de Franca, Av. Armando Salles Oliveira, 201, 14.404-600, Franca, SP, Brazil
| | | | - Hristo Kolev
- Institute of Catalysis, Bulgarian Academy of Sciences, Acad, G. Bonchev St., Sofia, Bulgaria
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George A, Jose A, Krishnapriya T, Francis T, Joseph C, Biju P. Tunable luminescence and energy transfer mechanism of Ca2Sb2O7:Dy3+ host sensitized single phase cool white light emitting phosphor. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2021.122625] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Devesa S, Rodrigues J, Teixeira SS, Rooney AP, Graça MPF, Cooper D, Monteiro T, Costa LC. Tuning Green to Red Color in Erbium Niobate Micro- and Nanoparticles. NANOMATERIALS 2021; 11:nano11030660. [PMID: 33800356 PMCID: PMC7998491 DOI: 10.3390/nano11030660] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 02/26/2021] [Accepted: 03/01/2021] [Indexed: 11/16/2022]
Abstract
Tetragonal Er0.5Nb0.5O2 and monoclinic ErNbO4 micro- and nanoparticles were prepared by the citrate sol–gel method and heat-treated at temperatures between 700 and 1600 °C. ErNbO4 revealed a spherical-shaped crystallite, whose size increased with heat treatment temperatures. To assess their optical properties at room temperature (RT), a thorough spectroscopic study was conducted. RT photoluminescence (PL) spectroscopy revealed that Er3+ optical activation was achieved in all samples. The photoluminescence spectra show the green/yellow 2H11/2, 4S3/2→4I15/2 and red 4F9/2→4I15/2 intraionic transitions as the main visible recombination, with the number of the crystal field splitting Er3+ multiplets reflecting the ion site symmetry in the crystalline phases. PL excitation allows the identification of Er3+ high-energy excited multiplets as the preferential population paths of the emitting levels. Independently of the crystalline structure, the intensity ratio between the green/yellow and red intraionic transitions was found to be strongly sensitive to the excitation energy. After pumping the samples with a resonant excitation into the 4G11/2 excited multiplet, a green/yellow transition stronger than the red one was observed, whereas the reverse occurred for higher excitation photon energies. Thus, a controllable selective excited tunable green to red color was achieved, which endows new opportunities for photonic and optoelectronic applications.
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Affiliation(s)
- Susana Devesa
- Centre for Physics University of Coimbra (CFisUC), Physics Department, University of Coimbra, Rua Larga, 3004-516 Coimbra, Portugal
- i3N and Physics Department, University of Aveiro, 3810-193 Aveiro, Portugal; (S.S.T.); (M.P.F.G.)
- Correspondence: (S.D.); (J.R.); (T.M.); (L.C.C.); Tel.: +351-234-370-944 (S.D.); +351-234-247-261 (J.R.); +351-234-370-824 (T.M.); +351-234-370-944 (L.C.C.)
| | - Joana Rodrigues
- i3N and Physics Department, University of Aveiro, 3810-193 Aveiro, Portugal; (S.S.T.); (M.P.F.G.)
- Correspondence: (S.D.); (J.R.); (T.M.); (L.C.C.); Tel.: +351-234-370-944 (S.D.); +351-234-247-261 (J.R.); +351-234-370-824 (T.M.); +351-234-370-944 (L.C.C.)
| | - Sílvia Soreto Teixeira
- i3N and Physics Department, University of Aveiro, 3810-193 Aveiro, Portugal; (S.S.T.); (M.P.F.G.)
| | - Aidan P. Rooney
- CEA LETI-Minatec, 17 Rue des Martyrs, 38054 Grenoble CEDEX 9, France; (A.P.R.); (D.C.)
| | - Manuel P. F. Graça
- i3N and Physics Department, University of Aveiro, 3810-193 Aveiro, Portugal; (S.S.T.); (M.P.F.G.)
| | - David Cooper
- CEA LETI-Minatec, 17 Rue des Martyrs, 38054 Grenoble CEDEX 9, France; (A.P.R.); (D.C.)
| | - Teresa Monteiro
- i3N and Physics Department, University of Aveiro, 3810-193 Aveiro, Portugal; (S.S.T.); (M.P.F.G.)
- Correspondence: (S.D.); (J.R.); (T.M.); (L.C.C.); Tel.: +351-234-370-944 (S.D.); +351-234-247-261 (J.R.); +351-234-370-824 (T.M.); +351-234-370-944 (L.C.C.)
| | - Luís C. Costa
- i3N and Physics Department, University of Aveiro, 3810-193 Aveiro, Portugal; (S.S.T.); (M.P.F.G.)
- Correspondence: (S.D.); (J.R.); (T.M.); (L.C.C.); Tel.: +351-234-370-944 (S.D.); +351-234-247-261 (J.R.); +351-234-370-824 (T.M.); +351-234-370-944 (L.C.C.)
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Ren Y, Rosch JG, Landry MR, Winter H, Khan S, Pratx G, Sun C. Tb-Doped core-shell-shell nanophosphors for enhanced X-ray induced luminescence and sensitization of radiodynamic therapy. Biomater Sci 2021; 9:496-505. [PMID: 33006335 PMCID: PMC7855282 DOI: 10.1039/d0bm00897d] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The development of radiation responsive materials, such as nanoscintillators, enables a variety of exciting new theranostic applications. In particular, the ability of nanophosphors to serve as molecular imaging agents in novel modalities, such as X-ray luminescence computed tomography (XLCT), has gained significant interest recently. Here, we present a radioluminescent nanoplatform consisting of Tb-doped nanophosphors with an unique core/shell/shell (CSS) architecture for improved optical emission under X-ray excitation. Owing to the spatial confinement and separation of luminescent activators, these CSS nanophosphors exhibited bright optical luminescence upon irradiation. In addition to standard physiochemical characterization, these CSS nanophosphors were evaluated for their ability to serve as energy mediators in X-ray stimulated photodynamic therapy, also known as radiodynamic therapy (RDT), through attachment of a photosensitizer, rose bengal (RB). Furthermore, cRGD peptide was used as a model targeting agent against U87 MG glioblastoma cells. In vitro RDT efficacy studies suggested the RGD-CSS-RB in combination with X-ray irradiation could induce enhanced DNA damage and increased cell killing, while the nanoparticles alone are well tolerated. These studies support the utility of CSS nanophosphors and warrants their further development for theranostic applications.
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Affiliation(s)
- Yufu Ren
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, 2730 SW Moody Ave, Portland, OR 97201, USA
| | - Justin G Rosch
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, 2730 SW Moody Ave, Portland, OR 97201, USA
| | - Madeleine R Landry
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, 2730 SW Moody Ave, Portland, OR 97201, USA
| | - Hayden Winter
- Department of Chemistry, College of Liberal Arts & Sciences, Portland State University, 1719 SW 10th Ave, Portland, OR 97201, USA
| | - Syamantak Khan
- Department of Radiation Oncology, School of Medicine, Stanford University, 300 Pasteur Drive, Stanford, CA 94305, USA
| | - Guillem Pratx
- Department of Radiation Oncology, School of Medicine, Stanford University, 300 Pasteur Drive, Stanford, CA 94305, USA
| | - Conroy Sun
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, 2730 SW Moody Ave, Portland, OR 97201, USA and Department of Radiation Medicine, School of Medicine, Oregon Health & Science University, 3181 S.W. Sam Jackson Park Road, Portland, OR 97239, USA.
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Sheng C, Li X, Tian Y, Wang X, Xu S, Yu H, Cao Y, Chen B. Temperature dependence of up-conversion luminescence and sensing properties of LaNbO 4: Nd 3+/Yb 3+/Ho 3+ phosphor under 808 nm excitation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 244:118846. [PMID: 32862076 DOI: 10.1016/j.saa.2020.118846] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 07/29/2020] [Accepted: 08/12/2020] [Indexed: 06/11/2023]
Abstract
LaNbO4: Nd3+/Yb3+/Ho3+ phosphor was prepared by a conventional high temperature solid-state reaction method. The temperature dependence of up-conversion (UC) luminescence property of LaNbO4: Nd3+/Yb3+/Ho3+ phosphor under 808 nm excitation and the potential application of exploiting the red-to-green UC emission intensity ratio (IR/IG) of Ho3+ in temperature sensing were studied. Two-photon processes were confirmed to be responsible for both the green and the red UC emissions at different temperatures by analyzing the excitation power density dependent UC luminescence spectra measured at different temperatures. The energy level diagram was drawn to analyze the UC luminescence mechanism of Ho3+. In addition, it was found that the ratio IR/IG of Ho3+ was independent of the excitation power density of 808 nm laser under the current experimental condition, but it was sensitive to the temperature. And the temperature dependent UC luminescence spectra displayed that the ratio IR/IG exhibited a good linear increasing tendency with temperature rising. The obtained temperature sensing sensitivity was 2.04 × 10-3 K-1 in the temperature range of 303-693 K. The results suggest that LaNbO4: Nd3+/Yb3+/Ho3+ phosphor may be a good candidate for application in optical temperature sensors.
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Affiliation(s)
- Chenxu Sheng
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China
| | - Xiangping Li
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China.
| | - Yu Tian
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China
| | - Xin Wang
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China
| | - Sai Xu
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China
| | - Hongquan Yu
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China
| | - Yongze Cao
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China
| | - Baojiu Chen
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China
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Xin S, Gao M, Ma J, Dai H, Zhu G. Thermally robust and valence-variation-induced white-light emission of a novel stannate phosphor Sr 3Al 10SnO 20:Dy 3+: crystal structure, luminescence property, and mechanism investigation. Dalton Trans 2020; 49:15800-15809. [PMID: 33150890 DOI: 10.1039/d0dt02899a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The development of novel white-light-emission phosphors is of great importance for applications in lighting and display fields. Trivalent Dy3+ is widely used as a potential luminescence center for white-light emission. However, Dy3+-doped phosphors often suffer a poor yellow to blue ratio due to the deficiency of its 4F9/2 → 6H15/2 transition, low luminescence efficiency, and unsatisfactory thermal stability. The importance of the present research work is that we have achieved a tunable white light in a single phased stannate phosphor Sr3Al10SnO20:Dy3+ with robust thermal stability. The crystal structure, phase purity, and chemical composition were investigated via X-ray diffraction Rietveld structure refinement, scanning electron microscopy, and energy dispersive spectrometry. The luminescence spectra indicated that Sr3Al10SnO20:Dy3+ not only exhibited characteristic 4F9/2 → 6HJ/2 (J=11, 13, and 15) inherent transition emissions of Dy3+, but also showed an abnormal blue band emission, which was identified through X-ray photoelectric spectroscopy as the T1 → S0 transitions of Sn2+, resulting from the valence variation of Sn4+. The efficient energy transfer from Sn2+ to Dy3+ was also confirmed and the transfer efficiency was calculated. Owing to the valence-variation-induced emission of Sn2+, a tunable white light could be realized from a cool to warm white light region, with Commission Internationale de l'Eclairage coordinates and a correlative color temperature varying from (0.277, 0.333) and 8634 K to (0.353, 0.404) and 4913 K, respectively. The luminescent and defects formation mechanism as well as the luminescence kinetics were further investigated. Moreover, Sr3Al10SnO20:Dy3+ had a high quantum efficiency (∼34.6%) and a super-stable thermal stability behavior (82.5% at 240 °C of the initial integral emission intensity at 30 °C) with a large activation energy (ΔE ∼ 0.1654 eV). Finally, a charge-compensation test was performed to further verify the effect of defects on the luminescence property and the related mechanism was discussed. The current work provides a novel method to achieve tunable white-light emission in Dy3+ single-doped phosphors and the related mechanism is effectual for other rare earths for potential applications in lighting and display fields.
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Affiliation(s)
- Shuangyu Xin
- Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, College of Physics and Materials Engineering, Dalian Minzu University, 18 Liaohe West Road, Dalian, 116600, P. R. China. and College of New Energy, Bohai University, Jinzhou, 121000, P. R. China
| | - Miao Gao
- Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, College of Physics and Materials Engineering, Dalian Minzu University, 18 Liaohe West Road, Dalian, 116600, P. R. China. and College of New Energy, Bohai University, Jinzhou, 121000, P. R. China
| | - Jialing Ma
- College of New Energy, Bohai University, Jinzhou, 121000, P. R. China
| | - Heng Dai
- Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, College of Physics and Materials Engineering, Dalian Minzu University, 18 Liaohe West Road, Dalian, 116600, P. R. China. and College of New Energy, Bohai University, Jinzhou, 121000, P. R. China
| | - Ge Zhu
- Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, College of Physics and Materials Engineering, Dalian Minzu University, 18 Liaohe West Road, Dalian, 116600, P. R. China. and College of New Energy, Bohai University, Jinzhou, 121000, P. R. China
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Wang X, Li X, Yu H, Xu S, Sun J, Cheng L, Zhang X, Zhang J, Cao Y, Chen B. Effects of Bi3+on down-/up-conversion luminescence, temperature sensing and optical transition properties of Bi3+/Er3+ co-doped YNbO4 phosphors. J RARE EARTH 2020. [DOI: 10.1016/j.jre.2020.11.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Liu X, Chen X, Yu Y, Xie W, Zhao Y, Luo S, Mei G, Lin J. Broad-Band Excited and Tunable Luminescence of CaTbAl 3O 7:RE 3+ (RE 3+ = Ce 3+ and/or Eu 3+) Nanocrystalline Phosphors for Near-UV WLEDs. Inorg Chem 2020; 59:12348-12361. [PMID: 32794701 DOI: 10.1021/acs.inorgchem.0c01440] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Here, we demonstrate a novel donor-intermediate-receptor energy transfer model through a Ce3+ → Tb3+ → Eu3+ scheme in a CaTbAl3O7:Ce3+,Eu3+ nanocrystalline phosphor. A new type of CaTbAl3O7 and CaTbAl3O7:RE3+ (RE3+ = Ce3+ and/or Eu3+) nanocrystalline phosphors were prepared by a simple sol-gel method. There exist efficient energy transfers of Ce3+ → Tb3+, Tb3+ → Eu3+, and Ce3+ → Tb3+ → Eu3+ in CaTbAl3O7:RE 3+ (RE 3+ = Ce3+ and/or Eu3+) nanocrystalline phosphors. With near-UV or UV light excitation, the as-prepared CaTbAl3O7:RE 3+ (RE 3+ = Ce3+ and/or Eu3+) nanocrystalline phosphors' luminous color can be regulated from green to green-yellow, yellow, orange, and orange-red by adjusting the doping concentration, categories, and different proportions of codoping Ce3+ to Eu3+ ions in the CaTbAl3O7 matrix. The luminescence mechanism with respect to the CaTbAl3O7:RE3+ (RE3+ = Ce3+ and/or Eu3+) nanocrystalline phosphors has been tentatively proposed. Due to their excellent luminescence properties, the as-prepared CaTbAl3O7, CaTbAl3O7:Ce3+, CaTbAl3O7:Eu3+, and CaTbAl3O7:Ce3+,Eu3+ nanocrystalline phosphors exhibit bright prospects in NUV-LEDs and other photoelectric field.
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Affiliation(s)
- Xiaoming Liu
- School of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China.,State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
| | - Xueya Chen
- School of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Yang Yu
- School of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Weijie Xie
- School of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Yidan Zhao
- School of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Shenglian Luo
- School of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Guo Mei
- School of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Jun Lin
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China.,School of Applied Physics and Materials, Wuyi University, Jiangmen, Guangdong 529020, PR China
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Chen J, Gao Y, Jiang H, Liu Y, Jin Z. Multicolor tunable luminescence and energy transfer of core-shell structured SiO 2@Gd 2O 3 microspheres co-activated with Dy 3+/Eu 3+ under single UV excitation. Dalton Trans 2020; 49:7397-7405. [PMID: 32427251 DOI: 10.1039/d0dt00735h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Optimizing structure and varying doped ions are two main strategies to obtain excellent luminescence performance. Spherical morphology is considered to be the most ideal phosphor structure due to the least surface defects. Herein, a series of spherical and monodispersed Dy3+/Eu3+ co-activated SiO2@Gd2O3 core-shell phosphors with multicolor tunable luminescence were successfully prepared via a facile urea assisted precipitation method. Related chemical reactions and the possible growth mechanism of Gd2O3:Ln3+ directional deposition on the surface of SiO2 microspheres were put forward. Upon 273 nm UV radiation excitation, SiO2@Gd2O3:Dy3+ and SiO2@Gd2O3:Eu3+ samples exhibited characteristic yellow (4F9/2-6H13/2) and blue (4F9/2-6H15/2) emissions of Dy3+ and red (5D0-7F2) emission of Eu3+, respectively. Meanwhile, multicolor emissions (warm white, yellow and orange) could be easily obtained by modulating the relative content of Dy3+ and Eu3+ in SiO2@Gd2O3:Ln3+ samples under a single excitation wavelength. Moreover, it was confirmed that Dy3+ could transfer energy to Eu3+ in the form of quadrupole-quadrupole interaction and further improved the luminescence intensity of Eu3+ by comparing experimental data with theoretical calculations. These results imply that tunable luminescence Dy3+,Eu3+ co-doped SiO2@Gd2O3 microspheres have great potential applications in multicolor displays and biolabeling fields.
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Affiliation(s)
- Jie Chen
- Analysis and Testing Center, Jilin Institute of Chemical Technology, Jilin 132022, China.
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Nikiforova GE, Tyurin AV, Ryumin MA, Bryukhanova KI, Khoroshilov AV, Gavrichev KS. Heat Capacity and Thermodynamic Functions of Dysprosium Orthoniobate in the Range 2–1300 K. RUSS J INORG CHEM+ 2020. [DOI: 10.1134/s0036023620050186] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Ba3LaNa(PO4)3F:Tm3+, Dy3+: A tunable blue-white color emitting phosphor via energy transfer for UV white LEDs. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.04.046] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Zhang W, He C, Wu X, Huang X, Lin F, Liu Y, Fang M, Min X, Huang Z. Yellow Emission Obtained by Combination of Broadband Emission and Multi-Peak Emission in Garnet Structure Na 2YMg 2V 3O 12: Dy 3+ Phosphor. Molecules 2020; 25:molecules25030542. [PMID: 32012682 PMCID: PMC7038123 DOI: 10.3390/molecules25030542] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 01/20/2020] [Accepted: 01/24/2020] [Indexed: 11/16/2022] Open
Abstract
The fabrication and luminescent performance of novel phosphors Na2YMg2V3O12:Dy3+ were investigated by a conventional solid-state reaction method. Under near-UV light, the Na2YMg2V3O12 host self-activated and released a broad emission band (400-700 nm, with a peak at 524 nm) ascribable to charge transfer in the (VO4)3- groups. Meanwhile, the Na2YMg2V3O12:Dy3+ phosphors emitted bright yellow light within both the broad emission band of the (VO4)3- groups and the sharp peaks of the Dy3+ ions at 490, 582, and 663 nm at a quenching concentration of 0.03 mol. The emission of the as-prepared Na2YMg2V3O12:Dy3+ phosphors remained stable at high temperatures. The obtained phosphors, commercial Y2O3:Eu3+ red phosphors, and BaMgAl10O17:Eu2+ blue phosphors were packed into a white light-emitting diode (WLED) device with a near-UV chip. The designed WLED emitted bright white light with good chromaticity coordinates (0.331, 0.361), satisfactory color rendering index (80.2), and proper correlation to a color temperature (7364 K). These results indicate the potential utility of Na2YMg2V3O12:Dy3+ phosphor as a yellow-emitting phosphor in solid-state illumination.
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Affiliation(s)
| | | | - Xiaowen Wu
- Correspondence: (X.W.); (Z.H.); Tel.: +86-13810536569 (X.W.); +86-13520265868 (Z.H.)
| | | | | | | | | | | | - Zhaohui Huang
- Correspondence: (X.W.); (Z.H.); Tel.: +86-13810536569 (X.W.); +86-13520265868 (Z.H.)
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15
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Huang S, Wu J, Li J, Yu L, Wang X, Bai M. Constructing a tetraphenylethene (TPE) derivative-decorated polyvinyl alcohol (PVA)/lanthanide nanoparticle composite system for tunable luminescence. Dalton Trans 2020; 49:5539-5546. [DOI: 10.1039/d0dt00473a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
It is found for the first time that TPEBA-modified PVA ligand-coated lanthanide nanoparticles display tunable luminescent properties due to the established energy transfer from the TPE-based ligand (donor) to the lanthanide nanoparticles (acceptor).
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Affiliation(s)
- Songyang Huang
- Marine College
- Shandong University
- Weihai
- People's Republic of China
| | - Jianbin Wu
- Marine College
- Shandong University
- Weihai
- People's Republic of China
| | - Jiale Li
- Marine College
- Shandong University
- Weihai
- People's Republic of China
| | - Lirong Yu
- Marine College
- Shandong University
- Weihai
- People's Republic of China
| | - Xi Wang
- Marine College
- Shandong University
- Weihai
- People's Republic of China
| | - Ming Bai
- Marine College
- Shandong University
- Weihai
- People's Republic of China
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16
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Das A, Saha S, Panigrahi K, Ghorai UK, Chattopadhyay KK. Enhanced Photoluminescence Properties of Low-Dimensional Eu 3+-Activated Y 4Al 2O 9 Phosphor Compared to Bulk for Solid-State Lighting Applications and Latent Fingerprint Detection-Based Forensic Applications. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2019; 25:1422-1430. [PMID: 31025617 DOI: 10.1017/s143192761900028x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In recent years, nanoscale phosphors have become vital in optoelectronic applications and to understand the improved performance of nanophosphors over bulk material, detailed investigation is essential. Herein, trivalent europium-activated Y4Al2O9 phosphors were developed by solid-state reaction and solvothermal reaction methods and their performance as a function of their dimension was studied for various applications. Under 394 nm optical excitation, the photoluminescence (PL) emission, excited state lifetime of the nanophosphor, exhibits greater performance than its bulk counterpart. The homogeneous spherical structure of the nanophosphors as compared with solid lumps of bulk phosphors is the basis for almost 40% of the enhancement in nanophosphors' intense red emission compared to the bulk. Moreover, the thermal stability of the nanophosphor is much better than the bulk phosphor, which clearly indicates a key advantage of nanophosphor. The superior performance of Eu3+-doped Y4Al2O9 nanophosphors over their bulk counterparts has been demonstrated for industrial phosphor-converted light-emitting diodes and visualization of latent fingerprint.
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Affiliation(s)
- Antika Das
- School of Materials Science and Nanotechnology, Jadavpur University, Kolkata-700032, West Bengal, India
| | - Subhajit Saha
- School of Materials Science and Nanotechnology, Jadavpur University, Kolkata-700032, West Bengal, India
| | - Karamjyoti Panigrahi
- School of Materials Science and Nanotechnology, Jadavpur University, Kolkata-700032, West Bengal, India
| | - Uttam Kumar Ghorai
- Department of Industrial Chemistry and Applied Chemistry, Swami Vivekananda Research Centre, Ramakrishna Mission Vidyamandira, Belurmath, Howrah-711202, West Bengal, India
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17
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Wang Q, Xie M, Min X, Huang Z, Liu Y, Wu X, Fang M. Synthesis, structural, and luminescence properties of BiOCl:Dy3+ single-component white-light-emitting phosphor for n-UV w-LEDs. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2019.04.047] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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18
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Hu X, Yi S, Liang B, Hu G, Wang Y. Synthesis and photoluminescence properties of Er 3+ and Dy 3+ doped Na 2 NbAlO 5 phosphors. J RARE EARTH 2018. [DOI: 10.1016/j.jre.2018.01.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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Dwivedi A, Mishra K, Rai SB. Investigation of Upconversion, downshifting and quantum -cutting behavior of Eu 3+, Yb 3+, Bi 3+ co-doped LaNbO 4 phosphor as a spectral conversion material. Methods Appl Fluoresc 2018; 6:035001. [PMID: 29480807 DOI: 10.1088/2050-6120/aab253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
This work presents the spectral conversion characteristics [upconversion (UC), downshifting (DS) and quantum-cutting (QC) optical processes] of Eu3+, Yb3+ and Bi3+ co-doped LaNbO4 (LBO) phosphor samples synthesized by solid state reaction technique. The crystal structure and the pure phase formation have been confirmed by x-ray diffraction (XRD) measurements. The surface morphology and particle size are studied by scanning electron microscopy (SEM). The rarely observed intense red UC emission from Eu3+ ion has been successfully obtained in Eu3+/Yb3+ co-doped LaNbO4 phosphor (on excitation with 980 nm) by optimizing the concentrations of Eu3+ and Yb3+ ions. The downshifting (DS) behavior has been studied by photoluminescence (PL) measurements on excitation with 265 nm wavelength from a Xe lamp source. A broad blue emission in the region 300-550 nm with its maximum ∼415 nm due to charge transfer band (CTB) of the host and large number of sharp peaks due to f-f transitions of Eu3+ ion have been observed. The energy transfer has been observed from (NbO4)3- to Eu3+ ion and the fluorescence emission has been optimized by varying the concentration of Eu3+ ion. An intense red emission has also been observed corresponding to 5D0 → 7F2 transition of Eu3+ ion at 611 nm in LBO: 0.09Eu3+ phosphor on excitation with 394 nm. The luminescence properties of Eu3+ ion are enhanced further through the sensitization effect of Bi3+ ion. The near infra-red (NIR) quantum cutting (QC) behavior due to Yb3+ ion has been monitored on excitation with 265 as well as 394 nm. The NIR QC is observed due to 2F5/2 → 2F7/2 transition of Yb3+ ion via co-operative energy transfer (CET) process from (NbO4)3- as well as Eu3+ ions to Yb3+ ion. This multimodal behavior (UC, DS and QC) makes this a promising phosphor material for multi-purpose spectral converter.
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Affiliation(s)
- A Dwivedi
- Laser and Spectroscopy Laboratory, Department of Physics, Banaras Hindu University, Varanasi-221005, India
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20
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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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21
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Shao H, Yu W, Ma Q, Wang X, Dong X, Liu Z, Wang J, Liu G, Chang L. Assembly of 1D coaxial nanoribbons into 2D multicolor luminescence array membrane endowed with tunable anisotropic electrical conductivity and magnetism via electrospinning. RSC Adv 2017. [DOI: 10.1039/c7ra03209a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
A flexible 2D color-tunable coaxial nanoribbon array membrane with anisotropic electrical conductivity and magnetism is successfully fabricated via one-pot electrospinning.
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Affiliation(s)
- Hong Shao
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun 130022
- China
| | - Wensheng Yu
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun 130022
- China
| | - Qianli Ma
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun 130022
- China
| | - Xinlu Wang
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun 130022
- China
| | - Xiangting Dong
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun 130022
- China
| | - Zhelin Liu
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun 130022
- China
| | - Jinxian Wang
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun 130022
- China
| | - Guixia Liu
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun 130022
- China
| | - Limin Chang
- Key Laboratory of Preparation and Application of Environmental Friendly Materials (Jilin Normal University)
- Ministry of Education
- Changchun 130103
- China
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22
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Xie X, Chen J, Sheng Y, Song Y, Zhou X, Zhang X, Shi Z, Zou H, Zheng K. Synthesis, structure and multicolor-tunable luminescence of the dandelion-like SiO2:Ln3+ (Ln = Eu, Tb) nanophosphors. NEW J CHEM 2017. [DOI: 10.1039/c7nj00999b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dandelion-like SiO2:Ln3+ (Ln = Eu, Tb) nanophosphors of 70 nm diameter have been synthesized, and colorful emission phosphors were obtained by Ln3+ doping.
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Affiliation(s)
- Xiaoming Xie
- College of Chemistry
- Jilin University
- Changchun 130012
- People's Republic of China
| | - Jie Chen
- College of Chemistry
- Jilin University
- Changchun 130012
- People's Republic of China
| | - Ye Sheng
- College of Chemistry
- Jilin University
- Changchun 130012
- People's Republic of China
| | - Yanhua Song
- College of Chemistry
- Jilin University
- Changchun 130012
- People's Republic of China
| | - Xiuqing Zhou
- College of Chemistry
- Jilin University
- Changchun 130012
- People's Republic of China
| | - Xiangting Zhang
- College of Chemistry
- Jilin University
- Changchun 130012
- People's Republic of China
| | - Zhan Shi
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- People's Republic of China
| | - Haifeng Zou
- College of Chemistry
- Jilin University
- Changchun 130012
- People's Republic of China
| | - Keyan Zheng
- College of Chemistry
- Jilin University
- Changchun 130012
- People's Republic of China
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23
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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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24
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Huang H, Zhou H, Zhou J, Wang T, Huang D, Wu Y, Sun L, Zhou G, Zhan J, Hu J. Enhanced anti-stocks luminescence in LaNbO4:Ln3+ (Ln3+ = Yb3+, Er3+/Ho3+/Tm3+) with abundant color. RSC Adv 2017. [DOI: 10.1039/c6ra28592a] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
A 980 nm laser was employed to excite Yb3+ ions to achieve the 2F7/2 → 2F5/2 transition, and the LNO:Yb3+, Er3+/Ho3+/Tm3+ samples exhibited intense green, yellowish-green and blue emission, respectively.
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25
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Liu X, Chen C, Li S, Dai Y, Guo H, Tang X, Xie Y, Yan L. Host-Sensitized and Tunable Luminescence of GdNbO4:Ln3+ (Ln3+ = Eu3+/Tb3+/Tm3+) Nanocrystalline Phosphors with Abundant Color. Inorg Chem 2016; 55:10383-10396. [DOI: 10.1021/acs.inorgchem.6b01637] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiaoming Liu
- School
of Environment and Chemical
Engineering, Nanchang Hangkong University, Nanchang 330063, P. R. China
| | - Chen Chen
- School
of Environment and Chemical
Engineering, Nanchang Hangkong University, Nanchang 330063, P. R. China
| | - Shuailong Li
- School
of Environment and Chemical
Engineering, Nanchang Hangkong University, Nanchang 330063, P. R. China
| | - Yuhua Dai
- School
of Environment and Chemical
Engineering, Nanchang Hangkong University, Nanchang 330063, P. R. China
| | - Huiqin Guo
- School
of Environment and Chemical
Engineering, Nanchang Hangkong University, Nanchang 330063, P. R. China
| | - Xinghua Tang
- School
of Environment and Chemical
Engineering, Nanchang Hangkong University, Nanchang 330063, P. R. China
| | - Yu Xie
- School
of Environment and Chemical
Engineering, Nanchang Hangkong University, Nanchang 330063, P. R. China
| | - Liushui Yan
- School
of Environment and Chemical
Engineering, Nanchang Hangkong University, Nanchang 330063, P. R. China
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26
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Wen D, Kuwahara H, Kato H, Kobayashi M, Sato Y, Masaki T, Kakihana M. Anomalous Orange Light-Emitting (Sr,Ba)2SiO4:Eu(2+) Phosphors for Warm White LEDs. ACS APPLIED MATERIALS & INTERFACES 2016; 8:11615-11620. [PMID: 27090069 DOI: 10.1021/acsami.6b02237] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Phosphors with sufficient red emission component are necessary for warm white light-emitting diodes. In this work on (Sr,Ba)2(1-x)Eu2xSiO4 phosphors, (Sr,Ba)1.5Eu0.5SiO4 achieved 75% of an internal quantum efficiency under excitation by blue light. Surprisingly, the (Sr,Ba)1.5Eu0.5SiO4 exhibited orange emission, against the well-known traditional green-yellow emission of (Sr,Ba)2SiO4:Eu(2+). Moreover, the concentration quenching of Eu(2+) in (Sr,Ba)2SiO4 was abnormally unobvious. With the help of calculations based on the density functional theory, it was discovered that the distinct local environment of luminescence centers rather than usual explanation such as self-absorption or intensified crystal field splitting, is responsible to the interesting red shifts in excitation and emission spectra. The refinement analysis based on X-ray diffraction revealed that the unequal distribution of Eu(2+) to two crystallographic sites caused low concentration of Eu(2+) at the 9-coordination site, inhibiting the concentration quenching. The (Sr,Ba)1.5Eu0.5SiO4 phosphor has warmer emission than the commercial Y3Al5O12:Ce(3+). This study also promotes research on the effect of site occupancy and the local environment of luminescence centers.
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Affiliation(s)
- Dawei Wen
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University , Sendai 980-8577, Japan
| | - Hiroki Kuwahara
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University , Sendai 980-8577, Japan
| | - Hideki Kato
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University , Sendai 980-8577, Japan
| | - Makoto Kobayashi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University , Sendai 980-8577, Japan
| | - Yasushi Sato
- Faculty of Science, Okayama University of Science , Okayama 700-0005, Japan
| | - Takaki Masaki
- School of Advanced Material Science and Engineering, Sungkyunkwan University , Suwon 440-746, Republic of Korea
| | - Masato Kakihana
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University , Sendai 980-8577, Japan
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27
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Xie W, Liu G, Dong X, Wang J, Yu W. Doping Eu3+/Sm3+ into CaWO4:Tm3+, Dy3+ phosphors and their luminescence properties, tunable color and energy transfer. RSC Adv 2016. [DOI: 10.1039/c6ra02594c] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Eu3+ and Sm3+ co-doped CaWO4:Tm3+, Dy3+ phosphors were prepared by a hydrothermal method. Under different UV radiations, the tunable color and warm-white-light emissions are realized.
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Affiliation(s)
- Wei Xie
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun
- China
| | - Guixia Liu
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun
- China
| | - Xiangting Dong
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun
- China
| | - Jinxian Wang
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun
- China
| | - Wensheng Yu
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun
- China
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28
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Zhang B, Zou H, Guan H, Dai Y, Song Y, Zhou X, Sheng Y. Lu2O2S:Tb3+, Eu3+nanorods: luminescence, energy transfer, and multicolour tuneable emission. CrystEngComm 2016. [DOI: 10.1039/c6ce01441k] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Zhang Y, Gong W, Yu J, Cheng Z, Ning G. Multi-color luminescence properties and energy transfer behaviour in host-sensitized CaWO4:Tb3+,Eu3+phosphors. RSC Adv 2016. [DOI: 10.1039/c6ra01862a] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
A series of host-sensitized and color-tunable CaWO4:Tb3+,Eu3+phosphors have been successfully synthesizedviathe high-temperature solid-state reaction route and their photoluminescence properties and energy transfer mechanism have been carefully investigated.
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Affiliation(s)
- Yang Zhang
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering
- Dalian University of Technology
- Dalian 116012
- P. R. China
| | - Weitao Gong
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering
- Dalian University of Technology
- Dalian 116012
- P. R. China
| | - Jingjie Yu
- Research Institute of Photonics
- Dalian Polytechnic University
- Dalian
- P. R. China
| | - Zhiyuan Cheng
- Research Institute of Photonics
- Dalian Polytechnic University
- Dalian
- P. R. China
| | - Guiling Ning
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering
- Dalian University of Technology
- Dalian 116012
- P. R. China
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30
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Xiong H, Dong J, Yang J, Liu Y, Song H, Gan S. Facile hydrothermal synthesis and multicolor-tunable luminescence of YPO4:Ln3+ (Ln = Eu, Tb). RSC Adv 2016. [DOI: 10.1039/c6ra22913a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
This work investigates a novel facile hydrothermal conversion method for the synthesis of uniform cuboid YPO4 and obtains multicolor emissions in YPO4:Tb3+, Eu3+ samples, and the energy transfer efficiency reachs about 94.30%.
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Affiliation(s)
- Hailong Xiong
- College of Chemistry
- Jilin University
- Changchun 130026
- PR China
| | - Jianchao Dong
- College of Chemistry
- Jilin University
- Changchun 130026
- PR China
| | - Junfeng Yang
- College of Chemistry
- Jilin University
- Changchun 130026
- PR China
| | - Yali Liu
- College of Chemistry
- Jilin University
- Changchun 130026
- PR China
| | - Hongbo Song
- College of Chemistry
- Jilin University
- Changchun 130026
- PR China
| | - Shucai Gan
- College of Chemistry
- Jilin University
- Changchun 130026
- PR China
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31
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Yang M, Liang Y, Gui Q, Zhao B, Jin D, Lin M, Yan L, You H, Dai L, Liu Y. Multifunctional luminescent nanomaterials from NaLa(MoO4)2:Eu(3+)/Tb(3+) with tunable decay lifetimes, emission colors, and enhanced cell viability. Sci Rep 2015; 5:11844. [PMID: 26259515 PMCID: PMC4531290 DOI: 10.1038/srep11844] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Accepted: 06/04/2015] [Indexed: 02/07/2023] Open
Abstract
A facile, but effective, method has been developed for large-scale preparation of NaLa(MoO4)2 nanorods and microflowers co-doped with Eu(3+) and Tb(3+) ions (abbreviated as: NLM:Ln(3+)). The as-synthesized nanomaterials possess a pure tetragonal phase with variable morphologies from shuttle-like nanorods to microflowers by controlling the reaction temperature and the amount of ethylene glycol used. Consequently, the resulting nanomaterials exhibit superb luminescent emissions over the visible region from red through yellow to green by simply changing the relative doping ratios of Eu(3+) to Tb(3+) ions. Biocompatibility study indicates that the addition of NLM:Ln(3+) nanomaterials can stimulate the growth of normal human retinal pigment epithelium (ARPE-19) cells. Therefore, the newly-developed NaLa(MoO4)2 nanomaterials hold potentials for a wide range of multifunctional applications, including bioimaging, security protection, optical display, optoelectronics for information storage, and cell stimulation.
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Affiliation(s)
- Mei Yang
- Institute of Advanced Materials for Nano-Bio Applications, School of Ophthalmology &Optometry, Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Youlong Liang
- Institute of Advanced Materials for Nano-Bio Applications, School of Ophthalmology &Optometry, Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Qingyuan Gui
- Institute of Advanced Materials for Nano-Bio Applications, School of Ophthalmology &Optometry, Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Bingxin Zhao
- Institute of Advanced Materials for Nano-Bio Applications, School of Ophthalmology &Optometry, Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Dayong Jin
- 1] Institute for Biomedical Materials and Devices, Faculty of Science, University of Technology Sydney, NSW, 2007, Australia [2] Advanced Cytometry Labs, ARC Center of Excellence for Nanoscale BioPhotonics, Macquarie University, Sydney, NSW 2109, Australia
| | - Mimi Lin
- Institute of Advanced Materials for Nano-Bio Applications, School of Ophthalmology &Optometry, Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Lu Yan
- Institute of Advanced Materials for Nano-Bio Applications, School of Ophthalmology &Optometry, Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Hongpeng You
- State key Laboratory of Rare Earth Resource utilization Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
| | - Liming Dai
- 1] Institute of Advanced Materials for Nano-Bio Applications, School of Ophthalmology &Optometry, Wenzhou Medical University, Wenzhou, Zhejiang 325027, China [2] Center of Advanced Science and Engineering for Carbon (Case4Carbon), Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Yong Liu
- 1] Institute of Advanced Materials for Nano-Bio Applications, School of Ophthalmology &Optometry, Wenzhou Medical University, Wenzhou, Zhejiang 325027, China [2] Advanced Cytometry Labs, ARC Center of Excellence for Nanoscale BioPhotonics, Macquarie University, Sydney, NSW 2109, Australia
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Zhang Y, Gong W, Yu J, Lin Y, Ning G. Tunable white-light emission via energy transfer in single-phase LiGd(WO4)2:Re3+ (Re = Tm, Tb, Dy, Eu) phosphors for UV-excited WLEDs. RSC Adv 2015. [DOI: 10.1039/c5ra19345a] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Novel single-phase white-light-emitting phosphors have been successfully synthesized by a solid-state reaction and their photoluminescence properties and energy transfer mechanism have been carefully investigated.
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Affiliation(s)
- Yang Zhang
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering
- Dalian University of Technology
- Dalian 116012
- P. R. China
| | - Weitao Gong
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering
- Dalian University of Technology
- Dalian 116012
- P. R. China
| | - Jingjie Yu
- Research Institute of Photonics
- Dalian Polytechnic University
- Dalian
- P. R. China
| | - Yuan Lin
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering
- Dalian University of Technology
- Dalian 116012
- P. R. China
| | - Guiling Ning
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering
- Dalian University of Technology
- Dalian 116012
- P. R. China
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33
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Gupta SK, Sahu M, Ghosh PS, Tyagi D, Saxena MK, Kadam RM. Energy transfer dynamics and luminescence properties of Eu3+ in CaMoO4 and SrMoO4. Dalton Trans 2015; 44:18957-69. [DOI: 10.1039/c5dt03280f] [Citation(s) in RCA: 116] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Undoped and europium doped CaMoO4 and SrMoO4 scheelites are synthesized using a complex polymerization method.
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Affiliation(s)
- Santosh K. Gupta
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - M. Sahu
- Radioanalytical Chemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - P. S. Ghosh
- Materials Science Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - Deepak Tyagi
- Chemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - M. K. Saxena
- Radioanalytical Chemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - R. M. Kadam
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
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34
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Du P, Yu JS. Dual-enhancement of photoluminescence and cathodoluminescence in Eu3+-activated SrMoO4 phosphors by Na+ doping. RSC Adv 2015. [DOI: 10.1039/c5ra06053b] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Energy level diagram of Eu3+ ions as well as possible PL mechanism in Eu3+-activated SrMoO4 phosphors. PL spectra of Sr0.93−yMoO4:0.07Eu3+/yNa+ phosphors excited at 290 nm.
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Affiliation(s)
- Peng Du
- Department of Electronics and Radio Engineering
- Kyung Hee University
- Yongin 446-701
- Republic of Korea
| | - Jae Su Yu
- Department of Electronics and Radio Engineering
- Kyung Hee University
- Yongin 446-701
- Republic of Korea
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35
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Zhang Y, Gong W, Yu J, Pang H, Song Q, Ning G. A new single-phase white-light-emitting CaWO4:Dy3+ phosphor: synthesis, luminescence and energy transfer. RSC Adv 2015. [DOI: 10.1039/c5ra12502b] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new single-phase white-emitting CaWO4:Dy3+ phosphor has been successfully synthesized and the photoluminescence properties and energy-transfer mechanism have been carefully investigated.
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Affiliation(s)
- Yang Zhang
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering
- Dalian University of Technology
- Dalian 116012
- P. R. China
| | - Weitao Gong
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering
- Dalian University of Technology
- Dalian 116012
- P. R. China
| | - Jingjie Yu
- Research Institute of Photonics
- Dalian Polytechnic University
- Dalian
- P. R. China
| | - Hongchang Pang
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering
- Dalian University of Technology
- Dalian 116012
- P. R. China
| | - Qiang Song
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering
- Dalian University of Technology
- Dalian 116012
- P. R. China
| | - Guiling Ning
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering
- Dalian University of Technology
- Dalian 116012
- P. R. China
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