Size- and concentration-dependent Eu2+/Eu3+ mixed luminescent characteristics of rare-earth-doped CaF2 nanoparticles and their monolithic epoxy nanocomposites
Abstract
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.
- Authors:
-
- 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
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; US Army Research Office (ARO); National Science Foundation (NSF)
- OSTI Identifier:
- 1798208
- Alternate Identifier(s):
- OSTI ID: 1778279
- Grant/Contract Number:
- AC02-06CH11357; W911NF1810469; W911NF-09-1-0011; DMR-1626376
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Alloys and Compounds
- Additional Journal Information:
- Journal Volume: 857; Journal Issue: 15; Journal ID: ISSN 0925-8388
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; composite; phosphor; calcium fluoride; cathodoluminescence; photoluminescence; rare earth
Citation Formats
George, Gibin, Hayes, Jacob I., Collins, Candyce N., Davis, Jason E., Yu, Lei, Lin, Yulin, Wen, Jianguo, Ila, Daryush, and Luo, Zhiping. Size- and concentration-dependent Eu2+/Eu3+ mixed luminescent characteristics of rare-earth-doped CaF2 nanoparticles and their monolithic epoxy nanocomposites. United States: N. p., 2020.
Web. doi:10.1016/j.jallcom.2020.157591.
George, Gibin, Hayes, Jacob I., Collins, Candyce N., Davis, Jason E., Yu, Lei, Lin, Yulin, Wen, Jianguo, Ila, Daryush, & Luo, Zhiping. Size- and concentration-dependent Eu2+/Eu3+ mixed luminescent characteristics of rare-earth-doped CaF2 nanoparticles and their monolithic epoxy nanocomposites. United States. https://doi.org/10.1016/j.jallcom.2020.157591
George, Gibin, Hayes, Jacob I., Collins, Candyce N., Davis, Jason E., Yu, Lei, Lin, Yulin, Wen, Jianguo, Ila, Daryush, and Luo, Zhiping. Wed .
"Size- and concentration-dependent Eu2+/Eu3+ mixed luminescent characteristics of rare-earth-doped CaF2 nanoparticles and their monolithic epoxy nanocomposites". United States. https://doi.org/10.1016/j.jallcom.2020.157591. https://www.osti.gov/servlets/purl/1798208.
@article{osti_1798208,
title = {Size- and concentration-dependent Eu2+/Eu3+ mixed luminescent characteristics of rare-earth-doped CaF2 nanoparticles and their monolithic epoxy nanocomposites},
author = {George, Gibin and Hayes, Jacob I. and Collins, Candyce N. and Davis, Jason E. and Yu, Lei and Lin, Yulin and Wen, Jianguo and Ila, Daryush and Luo, Zhiping},
abstractNote = {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.},
doi = {10.1016/j.jallcom.2020.157591},
journal = {Journal of Alloys and Compounds},
number = 15,
volume = 857,
place = {United States},
year = {Wed Oct 14 00:00:00 EDT 2020},
month = {Wed Oct 14 00:00:00 EDT 2020}
}
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Works referenced in this record:
ZnO nanocrystals with narrow-band blue emission
journal, January 2019
- Ghamsari, M. Sasani; Alamdari, S.; Razzaghi, D.
- Journal of Luminescence, Vol. 205
Preparation and characterization of luminescent polycarbonate nanofibers embedded with surface capped CdS nanoparticles
conference, January 2019
- Baby, Thomas; Jose, E. Tomlal
- PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS: ICAM 2019, AIP Conference Proceedings
Structural, photoluminescent properties and Judd-Ofelt analysis of Eu3+-activated CaF2 nanocubes
journal, January 2020
- Cantelar, Eugenio; Sanz-García, Juan Antonio; Sanz-Martín, Adrián
- Journal of Alloys and Compounds, Vol. 813
Tunable white light and energy transfer of Eu 2+ ‐Tb 3+ ‐Eu 3+ tri‐activated glasses synthesized in air
journal, May 2019
- Guo, Hai; Teng, Liming; Wei, Rongfei
- Journal of the American Ceramic Society, Vol. 102, Issue 11
Effects of electron irradiation and subsequent annealing on the optical absorption and photoluminescence of CaF2 single crystals
journal, June 2006
- Xiang, X.; Zu, X. T.; Zhu, S.
- Optical Materials, Vol. 28, Issue 8-9
Correlations between Crystallite/Particle Size and Photoluminescence Properties of Submicrometer Phosphors
journal, April 2007
- Wang, Wei-Ning; Widiyastuti, W.; Ogi, Takashi
- Chemistry of Materials, Vol. 19, Issue 7
Defect chemistry in CaF 2 :Eu 3+
journal, July 1982
- Hamers, R. J.; Wietfeldt, J. R.; Wright, J. C.
- The Journal of Chemical Physics, Vol. 77, Issue 2
Linear arrays of CaF2 nanostructures on Si
journal, April 1999
- Viernow, J.; Petrovykh, D. Y.; Men, F. K.
- Applied Physics Letters, Vol. 74, Issue 15
Optical excitation of deep defect levels in insulators within many-body perturbation theory: The center in calcium fluoride
journal, March 2008
- Ma, Yuchen; Rohlfing, Michael
- Physical Review B, Vol. 77, Issue 11
Sodium Chloride and Calcium Fluoride Windows for High-Pressure Infrared Spectroscopy*
journal, January 1956
- Parsons, R. W.; Drickamer, H. G.
- Journal of the Optical Society of America, Vol. 46, Issue 6
Preparation and investigation of suitability of gadolinium oxide nanoparticle doped polyvinyl alcohol films for optoelectronic applications
journal, April 2019
- Madhuri, S. N.; Hemalatha, K. S.; Rukmani, K.
- Journal of Materials Science: Materials in Electronics, Vol. 30, Issue 9
Phase diagram analysis and crystal growth of solid solutions
journal, January 2008
- Klimm, D.; Rabe, M.; Bertram, R.
- Journal of Crystal Growth, Vol. 310, Issue 1
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
journal, January 2014
- Lorbeer, C.; Behrends, F.; Cybinska, J.
- J. Mater. Chem. C, Vol. 2, Issue 44
Glass-ceramics and epoxy-composites for radiation imaging
journal, April 2007
- Williams, G. V. M.; Bittar, A.; Dotzler, C.
- Radiation Measurements, Vol. 42, Issue 4-5
Surface modification of a calcium fluoride filler and the effect on the nonisothermal crystallization behavior of poly(ethylene terephthalate)
journal, January 2014
- Sánchez-Leija, Regina Janet; Riba-Moliner, Marta; Cayuela-Marín, Diana
- Polymer Engineering & Science, Vol. 54, Issue 12
Crystal-Site Engineering Control for the Reduction of Eu 3+ to Eu 2+ in CaYAlO 4 : Structure Refinement and Tunable Emission Properties
journal, January 2015
- Zhang, Yang; Li, Xuejiao; Li, Kai
- ACS Applied Materials & Interfaces, Vol. 7, Issue 4
Preparation and scintillation properties of Eu2+:CaF2 scintillation ceramics
journal, April 2019
- Lan, Yuangang; Mei, Bingchu; Li, Weiwei
- Journal of Luminescence, Vol. 208
A neutron scintillator based on transparent nanocrystalline CaF 2 :Eu glass ceramic
journal, April 2016
- Struebing, Christian; Chong, JooYun; Lee, Gyuhyon
- Applied Physics Letters, Vol. 108, Issue 15
Optical studies of samarium-doped fluoride nanoparticles
journal, December 2011
- Pandurangappa, C.; Lakshminarasappa, B. N.
- Philosophical Magazine, Vol. 91, Issue 35
Transparent Luminescent Hyperbranched Epoxy/Carbon Oxide Dot Nanocomposites with Outstanding Toughness and Ductility
journal, October 2013
- De, Bibekananda; Voit, Brigitte; Karak, Niranjan
- ACS Applied Materials & Interfaces, Vol. 5, Issue 20
Ambient temperature synthesis of citrate stabilized and biofunctionalized, fluorescent calcium fluoridenanocrystals for targeted labeling of cancer cells
journal, January 2013
- Sasidharan, Sisini; Jayasree, Aswathy; Fazal, Sajid
- Biomater. Sci., Vol. 1, Issue 3
CaF2(Eu2+):LiF – Structural and spectroscopic properties of a new system for neutron detection
journal, February 2010
- Trojan-Piegza, Joanna; Glodo, Jarek; Sarin, Vinod Kumar
- Radiation Measurements, Vol. 45, Issue 2
Highly luminescent and transparent ZnO quantum dots–epoxy composite used for white light emitting diodes
journal, January 2014
- Huang, Jia Jia; Ye, Yi Bin; Lei, Zhou Qiao
- Physical Chemistry Chemical Physics, Vol. 16, Issue 12
A facile synthesis of CaF2:Eu2+ nanoparticles using citrate-stabilized Au catalysts
journal, January 2017
- Ye, Weihao; Huang, Qiying; Liu, Xiaotang
- Acta Materialia, Vol. 122
Afterglow properties of CaF2:Tm nanoparticles and its potential application in photodynamic therapy
journal, March 2016
- Zahedifar, M.; Sadeghi, E.; Shanei, M. M.
- Journal of Luminescence, Vol. 171
Chemical and Optical Studies of Samarium Doped CaF[sub 2] Type Single Crystals
journal, January 1965
- Weller, P. F.; Axe, J. D.; Pettit, G. D.
- Journal of The Electrochemical Society, Vol. 112, Issue 1
Color-tunable visible photoluminescence of Eu:CaF 2 single crystals: variations of valence state and local lattice environment of Eu ions
journal, January 2019
- Yu, Hao; Zhang, Bo; Chen, Xueyuan
- Optics Express, Vol. 27, Issue 2
Scintillation and dosimeter properties of CaF2 transparent ceramic doped with Eu2+
journal, January 2017
- Nakamura, Fumiya; Kato, Takumi; Okada, Go
- Ceramics International, Vol. 43, Issue 1
Optical absorption and luminescence of 14-MeV neutron-irradiated CaF2 single crystals
journal, September 2003
- Cooke, D. W.; Bennett, B. L.
- Journal of Nuclear Materials, Vol. 321, Issue 2-3
The thermoluminescent properties of natural calcium fluoride for radiation dosimetry
journal, December 2009
- 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
The Surface Structure of CaF 2 ; A Comparison of Techniques
journal, May 2001
- Vyas, Shyam; Grimes, Robin W.; Bulatov, Vladimir
- Molecular Simulation, Vol. 26, Issue 5
Preparation and luminescent properties of CaF2:Ln3+ (Ln:Er, Er/Yb)/Nafion composite films
journal, March 2019
- Song, Limei; Gao, Jianhua; Liang, Minmin
- Journal of Rare Earths, Vol. 37, Issue 3
Luminescent and Transparent Wood Composites Fabricated by Poly(methyl methacrylate) and γ-Fe 2 O 3 @YVO 4 :Eu 3+ Nanoparticle Impregnation
journal, March 2017
- Gan, Wentao; Xiao, Shaoliang; Gao, Likun
- ACS Sustainable Chemistry & Engineering, Vol. 5, Issue 5
Photoluminescent Epoxy/Gd 2 O 3 :Eu 3+ UV-cured Nanocomposites
journal, June 2012
- Roppolo, Ignazio; Debasu, Mengistie L.; Ferreira, Rute A. S.
- Macromolecular Materials and Engineering, Vol. 298, Issue 2
Fluorescence resonance energy transfer of CaF 2 : Eu 2+ , Tb 3+ applied to dye-sensitized solar cells
journal, September 2018
- Wang, Lege; Yang, Zijian; Li, You-Fen
- Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, Vol. 202
Novel ultraviolet-opaque, visible-transparent and light-emitting ZnO-QD/silicone composites with tunable luminescence colors
journal, May 2010
- Yang, Yang; Li, Wan-Nan; Luo, Yong-Song
- Polymer, Vol. 51, Issue 12
Reduction of Eu3+ to Eu2+ in aluminoborosilicate glasses under ionizing radiation
journal, September 2010
- Malchukova, E.; Boizot, B.
- Materials Research Bulletin, Vol. 45, Issue 9
Synthesis and optical characterizations of Nd, Y: CaF 2 transparent ceramics
journal, September 2017
- Sun, Zaichun; Mei, Bingchu; Li, Weiwei
- Optical Materials, Vol. 71
The reduction of Eu3+ to Eu2+ in air and luminescence properties of Eu2+ activated ZnO–B2O3–P2O5 glasses
journal, March 2007
- Lian, Zhihong; Wang, Jing; Lv, Yuhua
- Journal of Alloys and Compounds, Vol. 430, Issue 1-2
Ultrastable, highly luminescent quantum dot composites based on advanced surface manipulation strategy for flexible lighting-emitting
journal, June 2018
- Kong, Lingqing; Zhang, Lin; Meng, Zhaohui
- Nanotechnology, Vol. 29, Issue 31
Self-Compensation in Transparent Conducting F-Doped SnO 2
journal, November 2017
- Swallow, Jack E. N.; Williamson, Benjamin A. D.; Whittles, Thomas J.
- Advanced Functional Materials, Vol. 28, Issue 4
Luminescence of polystyrene composites loaded with CeF nanoparticles
journal, November 2018
- 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
The lifetime of Eu 2+ fluorescence in CaF 2 :Eu 2+ crystals
journal, November 1991
- Tsuboi, T.; Silfsten, P.
- Journal of Physics: Condensed Matter, Vol. 3, Issue 46
Probing the Influence of Disorder on Lanthanide Luminescence Using Eu-Doped LaPO 4 Nanoparticles
journal, August 2017
- van Hest, Jacobine J. H. A.; Blab, Gerhard A.; Gerritsen, Hans C.
- The Journal of Physical Chemistry C, Vol. 121, Issue 35
Nanoscale CaF 2 doped with Eu 3+ and Tb 3+ through fluorolytic sol–gel synthesis
journal, January 2014
- Ritter, Benjamin; Krahl, Thoralf; Rurack, Knut
- J. Mater. Chem. C, Vol. 2, Issue 40
Modification of luminescence spectra of CaF 2 : Eu 2+: Luminescence spectra of CaF 2 : Eu 2+
journal, March 2015
- Singh, Vartika S.; Joshi, C. P.; Moharil, S. V.
- Luminescence, Vol. 30, Issue 7
Role of monovalent alkali ions in the Yb3+ centers of CaF2 laser crystals
journal, March 2010
- Hraiech, Sana; Jouini, Anis; Jin Kim, Kyoung
- Radiation Measurements, Vol. 45, Issue 3-6
pH-responsive drug delivery system based on luminescent CaF2:Ce3+/Tb3+-poly(acrylic acid) hybrid microspheres
journal, March 2012
- Dai, Yunlu; Zhang, Cuimiao; Cheng, Ziyong
- Biomaterials, Vol. 33, Issue 8
Novel CaF 2 Nanocomposite with High Strength and Fluoride Ion Release
journal, May 2010
- Xu, H. H. K.; Moreau, J. L.; Sun, L.
- Journal of Dental Research, Vol. 89, Issue 7
Preparation and luminescence properties of ZnO:Ga – polystyrene composite scintillator
journal, January 2016
- Burešová, Hana; Procházková, Lenka; Turtos, Rosana Martinez
- Optics Express, Vol. 24, Issue 14
Epoxy to Carbonyl Group Conversion in Graphene Oxide Thin Films: Effect on Structural and Luminescent Characteristics
journal, August 2012
- Rani, J. R.; Lim, Juhwan; Oh, Juyeong
- The Journal of Physical Chemistry C, Vol. 116, Issue 35
Charge-transfer bands in alkaline-earth fluoride crystals doped by Eu3+ or Y b3+ ions
journal, June 2008
- Radzhabov, E.; Nepomnyashchikh, A.
- Solid State Communications, Vol. 146, Issue 9-10
Temperature sensing and bio-imaging applications based on polyethylenimine/CaF2 nanoparticles with upconversion fluorescence
journal, July 2017
- Liu, Guofeng; Sun, Zhen; Fu, Zuoling
- Talanta, Vol. 169
Luminescence and energy transfer of Eu 2+ /Tb 3+ /Eu 3+ in LiBaBO 3 phosphors with tunable-color emission
journal, January 2015
- Xu, Shuchao; Li, Panlai; Wang, Zhijun
- Journal of Materials Chemistry C, Vol. 3, Issue 35
Site-selective laser spectroscopy of BaF2:Eu3+
journal, June 1987
- Jouart, J. P.; Bissieux, C.; Mary, G.
- Journal of Luminescence, Vol. 37, Issue 3
Fast luminescence from rare-earth-codoped BaSiF 6 nanowires with high aspect ratios
journal, January 2018
- George, Gibin; Jackson, Shanell L.; Mobley, Zariana R.
- Journal of Materials Chemistry C, Vol. 6, Issue 27
Laser interactions with embedded Ca metal nanoparticles in single crystal CaF2
journal, April 2005
- Cramer, L. P.; Schubert, B. E.; Petite, P. S.
- Journal of Applied Physics, Vol. 97, Issue 7
Optical properties of a transparent CaF2:Er3+ fluoropolymer nanocomposite
journal, June 2005
- Kumar, G. A.; Chen, C. W.; Riman, R.
- Applied Physics Letters, Vol. 86, Issue 24
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]
journal, March 2014
- Zhyshkovych, A. V.
- Functional materials, Vol. 21, Issue 1
Synthesis and characterization of CaF2 nanocrystals
journal, January 2010
- Pandurangappa, C.; Lakshminarasappa, B. N.; Nagabhushana, B. M.
- Journal of Alloys and Compounds, Vol. 489, Issue 2
Study on the reduction of Eu3+→Eu2+ in Sr4Al14O25: Eu prepared in air atmosphere
journal, March 2003
- Peng, Mingying; Pei, Zhiwu; Hong, Guangyan
- Chemical Physics Letters, Vol. 371, Issue 1-2
Materials for Gamma-Ray Spectrometers: Inorganic Scintillators
journal, July 2018
- McGregor, Douglas S.
- Annual Review of Materials Research, Vol. 48, Issue 1
Ytterbium calcium fluoride waveguide laser
journal, January 2019
- Loiko, Pavel; Soulard, Rémi; Kifle, Esrom
- Optics Express, Vol. 27, Issue 9
Ionic Conductivity of Calcium Fluoride Crystals
journal, June 1957
- Ure, Roland W.
- The Journal of Chemical Physics, Vol. 26, Issue 6
Size-dependent upconversion luminescence in CaF2:Yb3+,Tm3+ nanocrystals
journal, May 2012
- Jiang, Tao; Qin, Weiping; Zhao, Dan
- Materials Letters, Vol. 74
Na+, Li+ and cubic centres in rare-earth-doped CaF2 and SrF2
journal, May 2000
- Jones, Glynn D.; Reeves, Roger J.
- Journal of Luminescence, Vol. 87-89
Luminescence of Eu 3+ Activated CaF 2 and SrF 2 Nanoparticles: Effect of the Particle Size and Codoping with Alkaline Ions
journal, January 2018
- Cortelletti, Paolo; Pedroni, Marco; Boschi, Federico
- Crystal Growth & Design, Vol. 18, Issue 2
A spectroscopic study of Eu 3+ centres in SrF 2 using a site-selective excitation technique
journal, March 1985
- Jouart, J. P.; Bissieux, C.; Mary, G.
- Journal of Physics C: Solid State Physics, Vol. 18, Issue 7
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
journal, April 2011
- Duan, Chengjun; Zhang, Zhijun; Rösler, Sven
- Chemistry of Materials, Vol. 23, Issue 7
Coexistence of the Eu2+ and Eu3+ Centers in the CaO : Eu Powder Phosphor
journal, March 1993
- Yamashita, N.
- Journal of The Electrochemical Society, Vol. 140, Issue 3
Direct Observation of Defect Dynamics in Nanocrystalline CaF 2 : Results from 19 F MAS NMR Spectroscopy
journal, March 2010
- Jain, Pragati; Kim, Sangtae; Youngman, Randall E.
- The Journal of Physical Chemistry Letters, Vol. 1, Issue 7
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
journal, November 2004
- Lehmann, Olaf; Kömpe, Karsten; Haase, Markus
- Journal of the American Chemical Society, Vol. 126, Issue 45
Investigation on electronic structure and luminescence mechanism of CaF2:Eu3+ from first principles calculations
journal, March 2019
- Hoat, D. M.; Rivas Silva, J. F.; Méndez Blas, A.
- Optik, Vol. 181
Structural and optical study of CaF2 nanoparticles produced by a microwave-assisted hydrothermal method
journal, November 2016
- Bezerra, Claudiane dos S.; Valerio, Mário E. G.
- Physica B: Condensed Matter, Vol. 501
Syntheses of Eu-Activated Alkaline Earth Fluoride MF 2 (M=Ca, Sr) Nanoparticles
journal, September 2007
- Hong, Byung-Chul; Kawano, Katsuyasu
- Japanese Journal of Applied Physics, Vol. 46, Issue 9B
Improving 800 nm Triggered Upconversion Emission for Lanthanide-Doped CaF 2 Nanoparticles through Sodium Ion Doping
journal, August 2017
- Xu, Bing; He, Huimei; Gu, Zhanjun
- The Journal of Physical Chemistry C, Vol. 121, Issue 33
Reduction from Eu3+ to Eu2+ in BaAl2O4:Eu phosphor prepared in an oxidizing atmosphere and luminescent properties of BaAl2O4:Eu
journal, December 2007
- Peng, Mingying; Hong, Guangyan
- Journal of Luminescence, Vol. 127, Issue 2