SiO2-SnO2:Er3+ Glass-Ceramic Monoliths

The development of efficient luminescent systems, such as microcavities, solid-state lasers, integrated optical amplifiers, and optical sensors is the main topic in glass photonics. The building blocks of these systems are glass-ceramics activated by rare-earth ions because they exhibit specific morphologic, structural, and spectroscopic properties. Among various materials that could be used as nanocrystals to be imbedded in a silica matrix, tin dioxide presents some interesting peculiarities, e.g., the presence of tin dioxide nanocrystals allows an increase in both solubility and emission of rare-earth ions. Here, we focus our attention on Er3+—doped silica—tin dioxide photonic glass-ceramics fabricated by a sol-gel route. Although the SiO2-SnO2:Er3+ could be fabricated in different forms, such as thin films, monoliths, and planar waveguides, we herein limit ourselves to the monoliths. The effective role of tin dioxide as a luminescence sensitizer for Er3+ ions is confirmed by spectroscopic measurements and detailed fabrication protocols are discussed.

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SiO2-SnO2:Er3+ Glass-Ceramic Monoliths

10.20944/preprints201807.0081.v1 ◽

2018 ◽

Author(s):

Lam Thi Ngoc Tran ◽

Damiano Massella ◽

Lidia Zur ◽

Alessandro Chiasera ◽

Stefano Varas ◽

...

Keyword(s):

Rare Earth ◽

Optical Sensors ◽

Tin Dioxide ◽

Sol Gel ◽

Glass Ceramics ◽

Building Blocks ◽

Spectroscopic Properties ◽

Silica Matrix ◽

Rare Earth Ions ◽

Planar Waveguides

The development of efficient luminescent systems, such as microcavities, solid state lasers, integrated optical amplifiers, optical sensors is the main topic in glass photonics. The building blocks of these systems are glass-ceramics activated by rare earth ions because they exhibit specific morphologic, structural and spectroscopic properties. Among various materials that could be used as nanocrystals to be imbedded in silica matrix, tin dioxide presents some interesting peculiarities, e.g. the presence of tin dioxide nanocrystals allows increase in both solubility and emission of rare earth ions. Here, we focus our attention on Er3+ - doped silica – tin dioxide photonic glass-ceramics fabricated by sol-gel route. Although the SiO2-SnO2:Er3+ could be fabricated in different geometrical systems: thin films, monoliths and planar waveguides we herein limit ourselves to the monoliths. The effective role of tin dioxide as luminescence sensitizer for Er3+ ions is confirmed by spectroscopic measurements and detailed fabrication protocols are discussed.

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Fabrication and characterization of sol‐gel planar waveguides doped with rare‐earth ions

Applied Physics Letters ◽

10.1063/1.117980 ◽

1996 ◽

Vol 69 (7) ◽

pp. 895-897 ◽

Cited By ~ 84

Author(s):

X. Orignac ◽

D. Barbier ◽

X. M. Du ◽

R. M. Almeida

Keyword(s):

Rare Earth ◽

Sol Gel ◽

Rare Earth Ions ◽

Planar Waveguides ◽

Fabrication And Characterization

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Sol–gel-derived transparent silica–(Gd,Pr)PO4 glass-ceramic narrow-band UVB phosphors

Dalton Transactions ◽

10.1039/c8dt02998a ◽

2018 ◽

Vol 47 (35) ◽

pp. 12085-12091

Author(s):

Mayu Suda ◽

Ryosui Nakagawa ◽

Kiyoshi Kanamura ◽

Koichi Kajihara

Keyword(s):

Rare Earth ◽

Quantum Efficiency ◽

Glass Ceramic ◽

External Quantum Efficiency ◽

Narrow Band ◽

Internal Quantum Efficiency ◽

Sol Gel ◽

Glass Ceramics ◽

Rare Earth Ions

Transparent sol–gel-derived silica–(Gd,Pr)PO4 glass-ceramics free from inert rare-earth ions exhibit narrow-band UVB photoluminescence from Gd3+ ions at ∼313 nm with internal quantum efficiency close to unity and external quantum efficiency higher than 0.9 under excitation into the 5d state of Pr3+ ions.

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Replacement of glass-former B2O3 by GeO2 in amorphous host evidenced by optical methods

Photonics Letters of Poland ◽

10.4302/plp.v9i4.790 ◽

2017 ◽

Vol 9 (4) ◽

pp. 113

Author(s):

Joanna Pisarska ◽

Wojciech Pisarski

Keyword(s):

Heavy Metal ◽

Rare Earth ◽

Glass Ceramics ◽

Spectroscopic Properties ◽

Rare Earth Ions ◽

Optical Methods ◽

Lead Borate ◽

Rare Earth Doped ◽

Germanate Glasses ◽

Metal Glasses

Two completely different glass-host matrices containing lead, i.e. borate and germanate glasses doped with erbium were studied. Replacement of glass-former B2O3 by GeO2 in amorphous host was evidenced by optical methods. The luminescence decay from the 4I13/2 upper laser state of Er3+ ions is relatively short, whereas up-converted emission signal is reduced definitely in borate glass containing lead due to its high B-O stretching vibrations. The results indicate that germanate glasses containing lead are promising for near-infrared luminescence and up-conversion applications. Full Text: PDF ReferencesR. Balda, A. Oleaga, J. Fernandez, J.M. Fdez-Navarro, "Spectroscopy and frequency upconversion of Er3+ ions in lead niobium germanate glasses", Opt. Mater. 24, 83 (2003). CrossRef H. Yamauchi, Y. Ohishi, "Spectroscopic properties of Er3+-doped PbO?Ga2O3?GeO2 glass for optical amplifiers", Opt. Mater. 27, 679 (2005). CrossRef W.A. Pisarski, Ł. Grobelny, J. Pisarska, R. Lisiecki, W. Ryba-Romanowski, "Spectroscopic properties of Yb3+ and Er3+ ions in heavy metal glasses", J. Alloys Compd. 509, 8088 (2011). CrossRef M.B. Saisudha, J. Ramakrishna, "Effect of host glass on the optical absorption properties of Nd3+, Sm3+, and Dy3+ in lead borate glasses", Phys. Rev. B 53, 6186 (1996). CrossRef C.K. Jayasankar, V. Venkatramu, S. Surendra Babu, P. Babu, "Luminescence properties of Dy3+ ions in a variety of borate and fluoroborate glasses containing lithium, zinc, and lead", J. Alloys Compd. 374, 22 (2004). CrossRef W.A. Pisarski et al. "Luminescence spectroscopy of rare earth-doped oxychloride lead borate glasses", J. Lumin. 131, 649 (2011). CrossRef M. Kochanowicz, W. Mazerski, J. Żmojda, K. Czajkowski, D. Dorosz, "Green upconversion emission in tellurite optical fibre codoped with Yb3+/Er3+", Phot. Lett. Poland 5, 35 (2013). CrossRef J. Dorosz, "Novel constructions of optical fibers doped with rare ? earth ions", Ceramics 86 (2005). CrossRef J. Żmojda, D. Dorosz, M. Kochanowicz, J. Dorosz, "Spectroscopic properties of Yb3+/Er3+ - doped antimony-phosphate glasses for fiber amplifiers", Phot. Lett. Poland 2, 76 (2010). CrossRef J. Dorosz, R. S. Romaniuk, "Development of Optical Fiber Technology in Poland", INTL J. Electron. Telecom. 57, 191 (2011). CrossRef Q.Y. Zhang et al. "Effects of PbF2 doping on structure and spectroscopic properties of Ga2O3?GeO2?Bi2O3?PbO glasses doped with rare earths", J. Appl. Phys. 99, 033510 (2006) CrossRef W.A. Pisarski, G. Dominiak-Dzik, W. Ryba-Romanowski, J. Pisarska, "Role of PbO substitution by PbF2 on structural behavior and luminescence of rare earth-doped lead borate glass", J. Alloys Compd. 451, 220 (2008). CrossRef M. Sołtys, J. Pisarska, L. Żur, T. Goryczka, W.A. Pisarski, "Influence of M2O3 (M = Al, Ga) glass modifiers on structure, thermal and spectroscopic properties of rare earth ions in lead phosphate based systems", Proc. SPIE 9228, 92280A (2014). CrossRef J. Janek, J. Pisarska, W.A. Pisarski, "Rare earth doped lead-free germanate glasses for modern photonics", Phot. Lett. Poland 6, 71 (2014). CrossRef W.A. Pisarski et al. "Infrared-to-visible conversion luminescence of Er3+ ions in lead borate transparent glass-ceramics", Opt. Mater. 31, 1781 (2009). CrossRef J. Pisarska, L. Żur, W.A. Pisarski, "Optical spectroscopy of Dy3+ ions in heavy metal lead-based glasses and glass?ceramics", J. Mol. Struct. 993, 160 (2011). CrossRef L. Żur, M. Sołtys, J. Pisarska, W.A. Pisarski, "Absorption and luminescence properties of terbium ions in heavy metal glasses", J. Alloys Compd. 578, 512 (2013). CrossRef W.A. Pisarski, L. Żur, M. Kowal, J. Pisarska, "Enhancement and quenching photoluminescence effects for rare earth ? Doped lead bismuth gallate glasses", J. Alloys Compd. 651, 565 (2015). CrossRef M. Shojiya, Y. Kawamoto, K. Kadono, "Judd?Ofelt parameters and multiphonon relaxation of Ho3+ ions in ZnCl2-based glass", J. Appl. Phys. 89, 4944 (2001). CrossRef

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Structural, Morphological and Magnetic Characterization of Sm-substituted Ni-Zn Ferrite

Nanoscience &Nanotechnology-Asia ◽

10.2174/2210681208666181018093813 ◽

2020 ◽

Vol 10 (2) ◽

pp. 152-156 ◽

Cited By ~ 1

Author(s):

Muhammad Hanif bin Zahari ◽

Beh Hoe Guan ◽

Lee Kean Chuan ◽

Afiq Azri bin Zainudin

Keyword(s):

Magnetic Properties ◽

Rare Earth ◽

Saturation Magnetization ◽

Sol Gel ◽

Magnetic Behavior ◽

Rare Earth Ions ◽

Ion Concentration ◽

Zn Ferrite ◽

Auto Combustion ◽

Combustion Technique

Background: Rare earth materials are known for its salient electrical insulation properties with high values of electrical resistivity. It is expected that the substitution of rare earth ions into spinel ferrites could significantly alter its magnetic properties. In this work, the effect of the addition of Samarium ions on the structural, morphological and magnetic properties of Ni0.5Zn0.5SmxFe2-xO4 (x=0.00, 0.02, 0.04, 0.06, 0.08, 0.10) synthesized using sol-gel auto combustion technique was investigated. Methods: A series of Samarium-substituted Ni-Zn ferrite nanoparticles (Ni0.5Zn0.5SmxFe2-xO4 where x=0.00, 0.02, 0.04, 0.06, 0.08, 0.10) were synthesized by sol-gel auto-combustion technique. Structural, morphological and magnetic properties of the samples were examined through X-Ray Diffraction (XRD), Field-Emission Scanning Electron Microscope (FESEM) and Vibrating Sample Magnetometer (VSM) measurements. Results: XRD patterns revealed single-phased samples with spinel cubic structure up to x= 0.04. The average crystallite size of the samples varied in the range of 41.8 – 85.6 nm. The prepared samples exhibited agglomerated particles with larger grain size observed in Sm-substituted Ni-Zn ferrite as compared to the unsubstituted sample. The prepared samples exhibited typical soft magnetic behavior as evidenced by the small coercivity field. The magnetic saturation, Ms values decreased as the Sm3+ concentration increases. Conclusion: The substituted Ni-Zn ferrites form agglomerated particles inching towards more uniform microstructure with each increase in Sm3+ substitution. The saturation magnetization of substituted samples decreases with the increase of samarium ion concentration. The decrease in saturation magnetization can be explained based on weak super exchange interaction between A and B sites. The difference in magnetic properties between the samples despite the slight difference in Sm3+ concentrations suggests that the properties of the NiZnFe2O4 can be ‘tuned’, depending on the present need, through the substitution of Fe3+ with rare earth ions.

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Luminescence properties of the rare earth (Eu3+ and Tb3+) complexes with 1,10-Phenanthroline incorporated in silica matrix by a sol–gel method

Materials Science and Engineering B ◽

10.1016/s0921-5107(97)00216-x ◽

1998 ◽

Vol 52 (2-3) ◽

pp. 123-128 ◽

Cited By ~ 39

Author(s):

B Yan ◽

H.J Zhang ◽

J.Z Ni

Keyword(s):

Rare Earth ◽

Sol Gel ◽

Silica Matrix ◽

Luminescence Properties ◽

Gel Method ◽

Sol Gel Method ◽

The Rare Earth

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A Unique Approach to Characterization of Sol-Gel-Derived Rare-Earth-Doped Oxyfluoride Glass-Ceramics

Journal of the American Ceramic Society ◽

10.1111/jace.12053 ◽

2012 ◽

Vol 96 (2) ◽

pp. 476-480 ◽

Cited By ~ 1

Author(s):

Go Kawamura ◽

Ryota Yoshimura ◽

Kazunari Ota ◽

Song-Yul Oh ◽

Norio Hakiri ◽

...

Keyword(s):

Rare Earth ◽

Sol Gel ◽

Glass Ceramics ◽

Oxyfluoride Glass ◽

Unique Approach ◽

Rare Earth Doped

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Structural and Spectroscopic Assessment of Er3+-Activated SiO2-HfO2 Glass Ceramics Planar Waveguides

Advances in Science and Technology ◽

10.4028/www.scientific.net/ast.55.56 ◽

2008 ◽

Vol 55 ◽

pp. 56-61

Author(s):

L. Minati ◽

Giorgio Speranza ◽

Yoann Jestin ◽

Cristina Armellini ◽

Andrea Chiappini ◽

...

Keyword(s):

Thermal Treatment ◽

Spinodal Decomposition ◽

Photoelectron Spectroscopy ◽

Sol Gel ◽

Glass Ceramics ◽

Emission Spectra ◽

Planar Waveguides ◽

Material Structure ◽

Crystalline Environment ◽

Concentration Threshold

Two series of xHfO2 - (100-x) SiO2 (x=10, 20, 30 mol%) glass-ceramics planar waveguides doped with 0.3 mol% Er3+ ions were prepared by the sol-gel route. A thermal treatment at 1000°C was applied to the second series of samples to nucleate HfO2 crystals. The waveguides were analyzed by X-ray photoelectron spectroscopy to study the effect of the Hf concentration and of the annealing on the material structure. XPS shows that in the first series of samples a Hf concentration threshold exists. Above this threshold the material undergoes a spinodal decomposition with formation of HfO2 rich domains. In the second series of samples the presence of thermal treatment lowers the concentration threshold so that the phase separation occurs also at a Hf concentration of 10%mol. In the waveguides where spinodal decomposition in present, the emission spectra from the Er3+ ions reveal a sensible narrowing of the 4I13/2 → 4I15/2 line. This demonstrates the presence of a crystalline environment for the Er3+ ions since the inhomogeneous broadening due to the disordered glassy network is suppressed. These results may have important implications for the fabrication of photonic devices with increased efficiency.

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