Size- and concentration-dependent Eu2+/Eu3+ mixed luminescent characteristics of rare-earth-doped CaF2 nanoparticles and their monolithic epoxy nanocomposites

George, Gibin; Hayes, Jacob I.; Collins, Candyce N.; Davis, Jason E.; Yu, Lei; Lin, Yulin; Wen, Jianguo; Ila, Daryush; Luo, Zhiping

doi:10.1016/j.jallcom.2020.157591

Title: Size- and concentration-dependent Eu²⁺/Eu³⁺ mixed luminescent characteristics of rare-earth-doped CaF₂ nanoparticles and their monolithic epoxy nanocomposites

Journal Article · Wed Oct 14 00:00:00 EDT 2020 · Journal of Alloys and Compounds

DOI:https://doi.org/10.1016/j.jallcom.2020.157591· OSTI ID:1798208

George, Gibin ^[1]; Hayes, Jacob I. ^[1]; Collins, Candyce N. ^[1]; Davis, Jason E. ^[2]; Yu, Lei ^[3]; Lin, Yulin ^[3]; Wen, Jianguo ^[3]; Ila, Daryush ^[1]; Luo, Zhiping ^[1]

Fayetteville State University, Fayetteville, NC (United States)
Oak Ridge Inst. for Science and Education (ORISE), Oak Ridge, TN (United States)
Argonne National Lab. (ANL), Argonne, IL (United States). Center for Nanoscale Materials

CaF₂ is a promising luminescent host material for a wide range of applications, due to its high transparency, non-hygroscopy, low refractive index, low density, low backscattering efficiency, and abundance in nature. Here we report the photoluminescence (PL) and cathodoluminescence (CL) characteristics of rare-earth-doped CaF₂ nanoparticles and their composite monoliths with epoxy with visible emissions. The CaF₂ nanoparticles of ca. 36, 108 and 305 nm were prepared by a facile solution-mixing process and subsequent hydrothermal treatment. As the particle size decreases, the luminescence intensity increases for single-doped particles, while oppositely decreases for codoped particles because of energy transfer. Further, Eu²⁺- and Tb³⁺-codoped CaF₂ nanoparticles exhibit red emission, providing an efficient path for red emission through an energy transfer by Tb³⁺ bridging without direct Eu³⁺ doping. The effects of size and concentration are found to be pronounced in CL than PL, as the charge transfer between Eu²⁺ and Eu³⁺ reduces the concentration quenching in CL. The luminescence emission characteristics of epoxy/CaF₂ monoliths are different from those of particles due to the interactions with the epoxy molecules, and thus the energy transfer is hindered in PL while not in CL, enabling them for high-energy irradiation applications.

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Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; US Army Research Office (ARO); National Science Foundation (NSF)

Grant/Contract Number:: AC02-06CH11357; W911NF1810469; W911NF-09-1-0011; DMR-1626376

OSTI ID:: 1798208

Alternate ID(s):: OSTI ID: 1778279

Journal Information:: Journal of Alloys and Compounds, Vol. 857, Issue 15; ISSN 0925-8388

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

References (77)

ZnO nanocrystals with narrow-band blue emission Ghamsari, M. Sasani; Alamdari, S.; Razzaghi, D. Journal of Luminescence, Vol. 205 https://doi.org/10.1016/j.jlumin.2018.09.064	journal	January 2019
Preparation and characterization of luminescent polycarbonate nanofibers embedded with surface capped CdS nanoparticles Baby, Thomas; Jose, E. Tomlal PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS: ICAM 2019, AIP Conference Proceedings https://doi.org/10.1063/1.5130223	conference	January 2019
Structural, photoluminescent properties and Judd-Ofelt analysis of Eu3+-activated CaF2 nanocubes Cantelar, Eugenio; Sanz-García, Juan Antonio; Sanz-Martín, Adrián Journal of Alloys and Compounds, Vol. 813 https://doi.org/10.1016/j.jallcom.2019.152194	journal	January 2020
Tunable white light and energy transfer of Eu ²⁺ ‐Tb ³⁺ ‐Eu ³⁺ tri‐activated glasses synthesized in air Guo, Hai; Teng, Liming; Wei, Rongfei Journal of the American Ceramic Society, Vol. 102, Issue 11 https://doi.org/10.1111/jace.16532	journal	May 2019
Effects of electron irradiation and subsequent annealing on the optical absorption and photoluminescence of CaF2 single crystals Xiang, X.; Zu, X. T.; Zhu, S. Optical Materials, Vol. 28, Issue 8-9 https://doi.org/10.1016/j.optmat.2005.05.002	journal	June 2006
Correlations between Crystallite/Particle Size and Photoluminescence Properties of Submicrometer Phosphors Wang, Wei-Ning; Widiyastuti, W.; Ogi, Takashi Chemistry of Materials, Vol. 19, Issue 7 https://doi.org/10.1021/cm062887p	journal	April 2007
Defect chemistry in CaF ₂ :Eu ³⁺ Hamers, R. J.; Wietfeldt, J. R.; Wright, J. C. The Journal of Chemical Physics, Vol. 77, Issue 2 https://doi.org/10.1063/1.443882	journal	July 1982
Linear arrays of CaF2 nanostructures on Si Viernow, J.; Petrovykh, D. Y.; Men, F. K. Applied Physics Letters, Vol. 74, Issue 15 https://doi.org/10.1063/1.123777	journal	April 1999
Optical excitation of deep defect levels in insulators within many-body perturbation theory: The $F$ center in calcium fluoride Ma, Yuchen; Rohlfing, Michael Physical Review B, Vol. 77, Issue 11 https://doi.org/10.1103/PhysRevB.77.115118	journal	March 2008
Sodium Chloride and Calcium Fluoride Windows for High-Pressure Infrared Spectroscopy* Parsons, R. W.; Drickamer, H. G. Journal of the Optical Society of America, Vol. 46, Issue 6 https://doi.org/10.1364/JOSA.46.000464	journal	January 1956
Preparation and investigation of suitability of gadolinium oxide nanoparticle doped polyvinyl alcohol films for optoelectronic applications Madhuri, S. N.; Hemalatha, K. S.; Rukmani, K. Journal of Materials Science: Materials in Electronics, Vol. 30, Issue 9 https://doi.org/10.1007/s10854-019-01237-9	journal	April 2019
Phase diagram analysis and crystal growth of solid solutions Klimm, D.; Rabe, M.; Bertram, R. Journal of Crystal Growth, Vol. 310, Issue 1 https://doi.org/10.1016/j.jcrysgro.2007.09.031	journal	January 2008
Charge compensation in RE ³⁺ (RE = Eu, Gd) and M ⁺ (M = Li, Na, K) co-doped alkaline earth nanofluorides obtained by microwave reaction with reactive ionic liquids leading to improved optical properties Lorbeer, C.; Behrends, F.; Cybinska, J. J. Mater. Chem. C, Vol. 2, Issue 44 https://doi.org/10.1039/C4TC01214C	journal	January 2014
Glass-ceramics and epoxy-composites for radiation imaging Williams, G. V. M.; Bittar, A.; Dotzler, C. Radiation Measurements, Vol. 42, Issue 4-5 https://doi.org/10.1016/j.radmeas.2007.02.037	journal	April 2007
Surface modification of a calcium fluoride filler and the effect on the nonisothermal crystallization behavior of poly(ethylene terephthalate) Sánchez-Leija, Regina Janet; Riba-Moliner, Marta; Cayuela-Marín, Diana Polymer Engineering & Science, Vol. 54, Issue 12 https://doi.org/10.1002/pen.23855	journal	January 2014
Crystal-Site Engineering Control for the Reduction of Eu ³⁺ to Eu ²⁺ in CaYAlO ₄ : Structure Refinement and Tunable Emission Properties Zhang, Yang; Li, Xuejiao; Li, Kai ACS Applied Materials & Interfaces, Vol. 7, Issue 4 https://doi.org/10.1021/am508859c	journal	January 2015
Preparation and scintillation properties of Eu2+:CaF2 scintillation ceramics Lan, Yuangang; Mei, Bingchu; Li, Weiwei Journal of Luminescence, Vol. 208 https://doi.org/10.1016/j.jlumin.2018.12.047	journal	April 2019
A neutron scintillator based on transparent nanocrystalline CaF ₂ :Eu glass ceramic Struebing, Christian; Chong, JooYun; Lee, Gyuhyon Applied Physics Letters, Vol. 108, Issue 15 https://doi.org/10.1063/1.4945999	journal	April 2016
Optical studies of samarium-doped fluoride nanoparticles Pandurangappa, C.; Lakshminarasappa, B. N. Philosophical Magazine, Vol. 91, Issue 35 https://doi.org/10.1080/14786435.2011.610376	journal	December 2011
Transparent Luminescent Hyperbranched Epoxy/Carbon Oxide Dot Nanocomposites with Outstanding Toughness and Ductility De, Bibekananda; Voit, Brigitte; Karak, Niranjan ACS Applied Materials & Interfaces, Vol. 5, Issue 20 https://doi.org/10.1021/am402415g	journal	October 2013
Ambient temperature synthesis of citrate stabilized and biofunctionalized, fluorescent calcium fluoridenanocrystals for targeted labeling of cancer cells Sasidharan, Sisini; Jayasree, Aswathy; Fazal, Sajid Biomater. Sci., Vol. 1, Issue 3 https://doi.org/10.1039/C2BM00127F	journal	January 2013
CaF2(Eu2+):LiF – Structural and spectroscopic properties of a new system for neutron detection Trojan-Piegza, Joanna; Glodo, Jarek; Sarin, Vinod Kumar Radiation Measurements, Vol. 45, Issue 2 https://doi.org/10.1016/j.radmeas.2010.01.011	journal	February 2010
Highly luminescent and transparent ZnO quantum dots–epoxy composite used for white light emitting diodes Huang, Jia Jia; Ye, Yi Bin; Lei, Zhou Qiao Physical Chemistry Chemical Physics, Vol. 16, Issue 12 https://doi.org/10.1039/c3cp55098b	journal	January 2014
A facile synthesis of CaF2:Eu2+ nanoparticles using citrate-stabilized Au catalysts Ye, Weihao; Huang, Qiying; Liu, Xiaotang Acta Materialia, Vol. 122 https://doi.org/10.1016/j.actamat.2016.10.013	journal	January 2017
Afterglow properties of CaF2:Tm nanoparticles and its potential application in photodynamic therapy Zahedifar, M.; Sadeghi, E.; Shanei, M. M. Journal of Luminescence, Vol. 171 https://doi.org/10.1016/j.jlumin.2015.11.043	journal	March 2016
Chemical and Optical Studies of Samarium Doped CaF[sub 2] Type Single Crystals Weller, P. F.; Axe, J. D.; Pettit, G. D. Journal of The Electrochemical Society, Vol. 112, Issue 1 https://doi.org/10.1149/1.2423469	journal	January 1965
Color-tunable visible photoluminescence of Eu:CaF ₂ single crystals: variations of valence state and local lattice environment of Eu ions Yu, Hao; Zhang, Bo; Chen, Xueyuan Optics Express, Vol. 27, Issue 2 https://doi.org/10.1364/OE.27.000523	journal	January 2019
Scintillation and dosimeter properties of CaF2 transparent ceramic doped with Eu2+ Nakamura, Fumiya; Kato, Takumi; Okada, Go Ceramics International, Vol. 43, Issue 1 https://doi.org/10.1016/j.ceramint.2016.09.201	journal	January 2017
Optical absorption and luminescence of 14-MeV neutron-irradiated CaF2 single crystals Cooke, D. W.; Bennett, B. L. Journal of Nuclear Materials, Vol. 321, Issue 2-3 https://doi.org/10.1016/S0022-3115(03)00240-X	journal	September 2003
The thermoluminescent properties of natural calcium fluoride for radiation dosimetry Tugay, H.; Yegingil, Z.; Dogan, T. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 267, Issue 23-24 https://doi.org/10.1016/j.nimb.2009.09.021	journal	December 2009
The Surface Structure of CaF ₂ ; A Comparison of Techniques Vyas, Shyam; Grimes, Robin W.; Bulatov, Vladimir Molecular Simulation, Vol. 26, Issue 5 https://doi.org/10.1080/08927020108023016	journal	May 2001
Preparation and luminescent properties of CaF2:Ln3+ (Ln:Er, Er/Yb)/Nafion composite films Song, Limei; Gao, Jianhua; Liang, Minmin Journal of Rare Earths, Vol. 37, Issue 3 https://doi.org/10.1016/j.jre.2018.05.020	journal	March 2019
Luminescent and Transparent Wood Composites Fabricated by Poly(methyl methacrylate) and γ-Fe ₂ O ₃ @YVO ₄ :Eu ³⁺ Nanoparticle Impregnation Gan, Wentao; Xiao, Shaoliang; Gao, Likun ACS Sustainable Chemistry & Engineering, Vol. 5, Issue 5 https://doi.org/10.1021/acssuschemeng.6b02985	journal	March 2017
Photoluminescent Epoxy/Gd ₂ O ₃ :Eu ³⁺ UV-cured Nanocomposites Roppolo, Ignazio; Debasu, Mengistie L.; Ferreira, Rute A. S. Macromolecular Materials and Engineering, Vol. 298, Issue 2 https://doi.org/10.1002/mame.201200020	journal	June 2012
Fluorescence resonance energy transfer of CaF 2 : Eu 2+ , Tb 3+ applied to dye-sensitized solar cells Wang, Lege; Yang, Zijian; Li, You-Fen Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, Vol. 202 https://doi.org/10.1016/j.saa.2018.05.015	journal	September 2018
Novel ultraviolet-opaque, visible-transparent and light-emitting ZnO-QD/silicone composites with tunable luminescence colors Yang, Yang; Li, Wan-Nan; Luo, Yong-Song Polymer, Vol. 51, Issue 12 https://doi.org/10.1016/j.polymer.2010.03.056	journal	May 2010
Reduction of Eu3+ to Eu2+ in aluminoborosilicate glasses under ionizing radiation Malchukova, E.; Boizot, B. Materials Research Bulletin, Vol. 45, Issue 9 https://doi.org/10.1016/j.materresbull.2010.04.027	journal	September 2010
Synthesis and optical characterizations of Nd, Y: CaF 2 transparent ceramics Sun, Zaichun; Mei, Bingchu; Li, Weiwei Optical Materials, Vol. 71 https://doi.org/10.1016/j.optmat.2016.06.033	journal	September 2017
The reduction of Eu3+ to Eu2+ in air and luminescence properties of Eu2+ activated ZnO–B2O3–P2O5 glasses Lian, Zhihong; Wang, Jing; Lv, Yuhua Journal of Alloys and Compounds, Vol. 430, Issue 1-2 https://doi.org/10.1016/j.jallcom.2006.05.002	journal	March 2007
Ultrastable, highly luminescent quantum dot composites based on advanced surface manipulation strategy for flexible lighting-emitting Kong, Lingqing; Zhang, Lin; Meng, Zhaohui Nanotechnology, Vol. 29, Issue 31 https://doi.org/10.1088/1361-6528/aac39c	journal	June 2018
Self-Compensation in Transparent Conducting F-Doped SnO ₂ Swallow, Jack E. N.; Williamson, Benjamin A. D.; Whittles, Thomas J. Advanced Functional Materials, Vol. 28, Issue 4 https://doi.org/10.1002/adfm.201701900	journal	November 2017
Luminescence of polystyrene composites loaded with CeF $_{3}$ nanoparticles Demkiv, T. M.; Vistovskyy, V. V.; Halyatkin, O. O. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 908 https://doi.org/10.1016/j.nima.2018.07.077	journal	November 2018
The lifetime of Eu ²⁺ fluorescence in CaF ₂ :Eu ²⁺ crystals Tsuboi, T.; Silfsten, P. Journal of Physics: Condensed Matter, Vol. 3, Issue 46 https://doi.org/10.1088/0953-8984/3/46/017	journal	November 1991
Probing the Influence of Disorder on Lanthanide Luminescence Using Eu-Doped LaPO ₄ Nanoparticles van Hest, Jacobine J. H. A.; Blab, Gerhard A.; Gerritsen, Hans C. The Journal of Physical Chemistry C, Vol. 121, Issue 35 https://doi.org/10.1021/acs.jpcc.7b06549	journal	August 2017
Nanoscale CaF ₂ doped with Eu ³⁺ and Tb ³⁺ through fluorolytic sol–gel synthesis Ritter, Benjamin; Krahl, Thoralf; Rurack, Knut J. Mater. Chem. C, Vol. 2, Issue 40 https://doi.org/10.1039/C4TC01073F	journal	January 2014
Modification of luminescence spectra of CaF ₂ : Eu ²⁺: Luminescence spectra of CaF ₂ : Eu ²⁺ Singh, Vartika S.; Joshi, C. P.; Moharil, S. V. Luminescence, Vol. 30, Issue 7 https://doi.org/10.1002/bio.2865	journal	March 2015
Role of monovalent alkali ions in the Yb3+ centers of CaF2 laser crystals Hraiech, Sana; Jouini, Anis; Jin Kim, Kyoung Radiation Measurements, Vol. 45, Issue 3-6 https://doi.org/10.1016/j.radmeas.2009.11.017	journal	March 2010
pH-responsive drug delivery system based on luminescent CaF2:Ce3+/Tb3+-poly(acrylic acid) hybrid microspheres Dai, Yunlu; Zhang, Cuimiao; Cheng, Ziyong Biomaterials, Vol. 33, Issue 8 https://doi.org/10.1016/j.biomaterials.2011.12.014	journal	March 2012
Novel CaF ₂ Nanocomposite with High Strength and Fluoride Ion Release Xu, H. H. K.; Moreau, J. L.; Sun, L. Journal of Dental Research, Vol. 89, Issue 7 https://doi.org/10.1177/0022034510364490	journal	May 2010
Preparation and luminescence properties of ZnO:Ga – polystyrene composite scintillator Burešová, Hana; Procházková, Lenka; Turtos, Rosana Martinez Optics Express, Vol. 24, Issue 14 https://doi.org/10.1364/OE.24.015289	journal	January 2016
Epoxy to Carbonyl Group Conversion in Graphene Oxide Thin Films: Effect on Structural and Luminescent Characteristics Rani, J. R.; Lim, Juhwan; Oh, Juyeong The Journal of Physical Chemistry C, Vol. 116, Issue 35 https://doi.org/10.1021/jp3050302	journal	August 2012
Charge-transfer bands in alkaline-earth fluoride crystals doped by Eu3+ or Y b3+ ions Radzhabov, E.; Nepomnyashchikh, A. Solid State Communications, Vol. 146, Issue 9-10 https://doi.org/10.1016/j.ssc.2008.03.037	journal	June 2008
Temperature sensing and bio-imaging applications based on polyethylenimine/CaF2 nanoparticles with upconversion fluorescence Liu, Guofeng; Sun, Zhen; Fu, Zuoling Talanta, Vol. 169 https://doi.org/10.1016/j.talanta.2017.03.054	journal	July 2017
Luminescence and energy transfer of Eu ²⁺ /Tb ³⁺ /Eu ³⁺ in LiBaBO ₃ phosphors with tunable-color emission Xu, Shuchao; Li, Panlai; Wang, Zhijun Journal of Materials Chemistry C, Vol. 3, Issue 35 https://doi.org/10.1039/C5TC01577D	journal	January 2015
Site-selective laser spectroscopy of BaF2:Eu3+ Jouart, J. P.; Bissieux, C.; Mary, G. Journal of Luminescence, Vol. 37, Issue 3 https://doi.org/10.1016/0022-2313(87)90189-X	journal	June 1987
Fast luminescence from rare-earth-codoped BaSiF ₆ nanowires with high aspect ratios George, Gibin; Jackson, Shanell L.; Mobley, Zariana R. Journal of Materials Chemistry C, Vol. 6, Issue 27 https://doi.org/10.1039/C8TC01651H	journal	January 2018
Laser interactions with embedded Ca metal nanoparticles in single crystal CaF2 Cramer, L. P.; Schubert, B. E.; Petite, P. S. Journal of Applied Physics, Vol. 97, Issue 7 https://doi.org/10.1063/1.1862758	journal	April 2005
Optical properties of a transparent CaF2:Er3+ fluoropolymer nanocomposite Kumar, G. A.; Chen, C. W.; Riman, R. Applied Physics Letters, Vol. 86, Issue 24 https://doi.org/10.1063/1.1947891	journal	June 2005
Intrinsic and impurity luminescence of CaF2, CaF2:Eu2+ and CaF2:Eu3+ nanoparticles at high energy excitation [Intrinsic and impurity luminescence of CaF2, CaF2:Eu2+ and CaF2:Eu3+ nanoparticles at high energy excitation] Zhyshkovych, A. V. Functional materials, Vol. 21, Issue 1 https://doi.org/10.15407/fm21.01.010	journal	March 2014
Synthesis and characterization of CaF2 nanocrystals Pandurangappa, C.; Lakshminarasappa, B. N.; Nagabhushana, B. M. Journal of Alloys and Compounds, Vol. 489, Issue 2 https://doi.org/10.1016/j.jallcom.2009.09.118	journal	January 2010
Study on the reduction of Eu3+→Eu2+ in Sr4Al14O25: Eu prepared in air atmosphere Peng, Mingying; Pei, Zhiwu; Hong, Guangyan Chemical Physics Letters, Vol. 371, Issue 1-2 https://doi.org/10.1016/S0009-2614(03)00044-7	journal	March 2003
Materials for Gamma-Ray Spectrometers: Inorganic Scintillators McGregor, Douglas S. Annual Review of Materials Research, Vol. 48, Issue 1 https://doi.org/10.1146/annurev-matsci-070616-124247	journal	July 2018
Ytterbium calcium fluoride waveguide laser Loiko, Pavel; Soulard, Rémi; Kifle, Esrom Optics Express, Vol. 27, Issue 9 https://doi.org/10.1364/OE.27.012647	journal	January 2019
Ionic Conductivity of Calcium Fluoride Crystals Ure, Roland W. The Journal of Chemical Physics, Vol. 26, Issue 6 https://doi.org/10.1063/1.1743547	journal	June 1957
Size-dependent upconversion luminescence in CaF2:Yb3+,Tm3+ nanocrystals Jiang, Tao; Qin, Weiping; Zhao, Dan Materials Letters, Vol. 74 https://doi.org/10.1016/j.matlet.2012.01.045	journal	May 2012
Na+, Li+ and cubic centres in rare-earth-doped CaF2 and SrF2 Jones, Glynn D.; Reeves, Roger J. Journal of Luminescence, Vol. 87-89 https://doi.org/10.1016/S0022-2313(99)00559-1	journal	May 2000
Luminescence of Eu ³⁺ Activated CaF ₂ and SrF ₂ Nanoparticles: Effect of the Particle Size and Codoping with Alkaline Ions Cortelletti, Paolo; Pedroni, Marco; Boschi, Federico Crystal Growth & Design, Vol. 18, Issue 2 https://doi.org/10.1021/acs.cgd.7b01050	journal	January 2018
A spectroscopic study of Eu ³⁺ centres in SrF ₂ using a site-selective excitation technique Jouart, J. P.; Bissieux, C.; Mary, G. Journal of Physics C: Solid State Physics, Vol. 18, Issue 7 https://doi.org/10.1088/0022-3719/18/7/019	journal	March 1985
Preparation, Characterization, and Photoluminescence Properties of Tb ³⁺ -, Ce ³⁺ -, and Ce ³⁺ /Tb ³⁺ -Activated RE ₂ Si ₄ N ₆ C (RE = Lu, Y, and Gd) Phosphors Duan, Chengjun; Zhang, Zhijun; Rösler, Sven Chemistry of Materials, Vol. 23, Issue 7 https://doi.org/10.1021/cm103495j	journal	April 2011
Coexistence of the Eu2+ and Eu3+ Centers in the CaO : Eu Powder Phosphor Yamashita, N. Journal of The Electrochemical Society, Vol. 140, Issue 3 https://doi.org/10.1149/1.2056169	journal	March 1993
Direct Observation of Defect Dynamics in Nanocrystalline CaF ₂ : Results from ¹⁹ F MAS NMR Spectroscopy Jain, Pragati; Kim, Sangtae; Youngman, Randall E. The Journal of Physical Chemistry Letters, Vol. 1, Issue 7 https://doi.org/10.1021/jz100152j	journal	March 2010
Synthesis of Eu ³⁺ -Doped Core and Core/Shell Nanoparticles and Direct Spectroscopic Identification of Dopant Sites at the Surface and in the Interior of the Particles Lehmann, Olaf; Kömpe, Karsten; Haase, Markus Journal of the American Chemical Society, Vol. 126, Issue 45 https://doi.org/10.1021/ja031826e	journal	November 2004
Investigation on electronic structure and luminescence mechanism of CaF2:Eu3+ from first principles calculations Hoat, D. M.; Rivas Silva, J. F.; Méndez Blas, A. Optik, Vol. 181 https://doi.org/10.1016/j.ijleo.2018.12.173	journal	March 2019
Structural and optical study of CaF2 nanoparticles produced by a microwave-assisted hydrothermal method Bezerra, Claudiane dos S.; Valerio, Mário E. G. Physica B: Condensed Matter, Vol. 501 https://doi.org/10.1016/j.physb.2016.08.025	journal	November 2016
Syntheses of Eu-Activated Alkaline Earth Fluoride MF ₂ (M=Ca, Sr) Nanoparticles Hong, Byung-Chul; Kawano, Katsuyasu Japanese Journal of Applied Physics, Vol. 46, Issue 9B https://doi.org/10.1143/JJAP.46.6319	journal	September 2007
Improving 800 nm Triggered Upconversion Emission for Lanthanide-Doped CaF ₂ Nanoparticles through Sodium Ion Doping Xu, Bing; He, Huimei; Gu, Zhanjun The Journal of Physical Chemistry C, Vol. 121, Issue 33 https://doi.org/10.1021/acs.jpcc.7b05639	journal	August 2017
Reduction from Eu3+ to Eu2+ in BaAl2O4:Eu phosphor prepared in an oxidizing atmosphere and luminescent properties of BaAl2O4:Eu Peng, Mingying; Hong, Guangyan Journal of Luminescence, Vol. 127, Issue 2 https://doi.org/10.1016/j.jlumin.2007.04.012	journal	December 2007

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composite
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cathodoluminescence
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Title: Size- and concentration-dependent Eu2+/Eu3+ mixed luminescent characteristics of rare-earth-doped CaF2 nanoparticles and their monolithic epoxy nanocomposites

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Title: Size- and concentration-dependent Eu²⁺/Eu³⁺ mixed luminescent characteristics of rare-earth-doped CaF₂ nanoparticles and their monolithic epoxy nanocomposites