Preparation and Properties of Er3+ Doped with Bi2O3-BaO-B2O3 Glass

2013 ◽  
Vol 770 ◽  
pp. 54-58
Author(s):  
Rungsan Ruamnikhom ◽  
Pichet Limsuwan ◽  
Natthakridta Chanthima ◽  
Jakrapong Kaewkhao
Keyword(s):  
Molar Volume ◽  
Absorption Spectra ◽  
Room Temperature ◽  
Visible Region ◽  
Photoluminescence Spectra ◽  
Melt Quenching ◽  
Volume Measurements ◽  
Upconversion Photoluminescence ◽  
Quenching Method

Er2O3-doped Bi2O3BaOB2O3 glasses were prepared by the conventional melt-quenching method. The glasses of the composition (in mol%) (40-x)B2O3:40Bi2O3:20BaO:xEr2O3 (where x = 0.00, 0.50, 1.00, 1.50, 2.00 and 2.50) were prepared by the melt quenching method. The density and molar volume measurements were carried out at room temperature. Absorption spectra were investigated in the UVVISNIR region from 300 to1800 nm. The upconversion photoluminescence spectra were observed in the visible region.

Preparation and Properties of La2O3-CaO-P2O5 Glasses Doped with Eu3+ Ions

2016 ◽  
Vol 675-676 ◽  
pp. 376-379 ◽  
Author(s):  
Narun Luewarasirikul ◽  
Piyachat Meejitpaisan ◽  
Jakrapong Kaewkhao
Keyword(s):  
Calcium Phosphate ◽  
Molar Volume ◽  
Absorption Spectra ◽  
Room Temperature ◽  
Emission Spectra ◽  
Phosphate Glasses ◽  
Excitation Wavelength ◽  
Melt Quenching ◽  
Volume Measurements ◽  
Doped Glasses

Lanthanum calcium phosphate glasses doped with Eu3+ ions in compositions 20La2O3:10CaO:(70-x)P2O5:xEu2O3 (where x = 0.05, 0.10, 0.50 and 1.50 mol%) were prepared by melt-quenching technique. The density and molar volume measurements were carried out at room temperature. The absorption spectra were investigated in the UV-Vis-NIR region from 200 to 2500 nm. The emission spectra of Eu3+-doped glasses centered at 590 nm (5D0→7F1), 612 nm (5D0→7F2), 652 nm (5D0→7F3) and 699 nm (5D0→7F4) have been observed with 393 nm excitation wavelength.

scholarly journals Optical Properties of Erbium Zinc Tellurite Glass System

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Sidek Hj. Abdul Aziz ◽  
R. El-Mallawany ◽  
Siti Shawaliza Badaron ◽  
Halimah Mohamed Kamari ◽  
Khamirul Amin Matori
Keyword(s):  
Optical Properties ◽  
Band Gap ◽  
Molar Volume ◽  
Absorption Spectra ◽  
Wavelength Range ◽  
Room Temperature ◽  
Tellurite Glass ◽  
Tellurite Glasses ◽  
Melt Quenching ◽  
Quenching Method

Er3+-doped tellurite glasses with molar compositions ofxEr2O3-20ZnO-(80-x)TeO2(x=0, 1, 2, 3, and 4 mole%) (EZT) have been successfully synthesized by the melt-quenching method. Density and molar volume have been measured. UV-VIS absorption spectra in the wavelength range of 400–800 nm at room temperature has been measured. The band gap for every composition has been calculated. Photoluminescence spectroscopy in the wavelength range of 400–650 nm and at room temperature has been evaluated.

Luminescence Properties of Nd3+ Ions Doped in CaO-Y2O3-SiO2-B2O3 Glasses

2016 ◽  
Vol 675-676 ◽  
pp. 355-358
Author(s):  
Natthakridta Chanthima ◽  
Jakrapong Kaewkhao
Keyword(s):  
Molar Volume ◽  
Absorption Spectra ◽  
Luminescence Intensity ◽  
Room Temperature ◽  
Luminescence Properties ◽  
Melt Quenching ◽  
Absorption Bands ◽  
Ion Concentrations ◽  
Volume Measurements ◽  
Nir Luminescence

Calcium yttrium silicoborate glasses doped with different Nd3+ ion concentrations have been prepared using the melt quenching technique at 1400 °C. Physical, optical and luminescence properties of glass samples were investigated. The density and molar volume measurements were carried out at room temperature. The results show that, the density and molar volume of glass samples not deepened on the concentration of Nd2O3. Absorption spectra were investigated in the UV–VIS–NIR region from 200 to 2500 nm. It was observed that the absorption bands have 8 peaks with corresponding to 467, 521, 584, 638, 682, 747, 805 and 877 nm. The luminescence properties were investigated in the NIR region. On excitation, with 584 and 805 nm, it is found that the emission peaks are located at 896 (904), 1060 and 1332 nm that correspond to the emission transitions from 4F3/2 to 4I9/2, 4I11/2 and 4I13/2, respectively. The NIR luminescence intensity obtained with 584 nm excitation was stronger than 805 nm.

Influence of Bi2O3 on Borophosphate Glasses Properties

2014 ◽  
Vol 979 ◽  
pp. 343-346 ◽  
Author(s):  
Natthakridta Chanthima ◽  
Jakrapong Kaewkhao
Keyword(s):  
Optical Properties ◽  
Molar Volume ◽  
Absorption Spectra ◽  
Packing Density ◽  
Visible Range ◽  
Melt Quenching ◽  
Borophosphate Glasses ◽  
Borophosphate Glass ◽  
Uv Visible

Borophosphate glasses have been synthesized with a Bi2O3concentration of 15.0 to 25.0 mol%, added 2.5 mol% for each concentration, by the normal melt quenching technique at 1200 °C. The physical and optical properties of bismuth borophosphate glass systems have been studied. The glasses are characterized for their physical and optical properties. The density and molar volume of these glasses were found in the range 3.4391 to 3.9338 g/cm3and 52.2515 to 55.7557 cm3/mol, respectively. It was observed that the density and molar volume of these glasses was increased with increasing the concentration of Bi2O3. The absorption spectra of these glasses were recorded in the UV-Visible range. It has been found that, the absorption spectra were shifted to longer wavelength with higher Bi2O3concentration. In addition, the oxygen packing density of glass samples have been also investigated.

Optical Absorption and Photoluminescence Properties of Dy3+ Ions in Bi2O3-SiO2-B2O3 Glass System

2014 ◽  
Vol 979 ◽  
pp. 280-284
Author(s):  
Narong Sangwaranatee ◽  
Yaowaluk Tariwong ◽  
Sunisa Sarachai ◽  
Jakrapong Kaewkhao ◽  
Natthakridta Chanthima
Keyword(s):  
Optical Absorption ◽  
Emission Spectrum ◽  
Molar Volume ◽  
Borosilicate Glass ◽  
Excitation Wavelength ◽  
Optical Absorption Spectra ◽  
Photoluminescence Spectra ◽  
Photoluminescence Properties ◽  
Melt Quenching ◽  
Absorption Bands

This research studied the effect of dysprosium on the physical, optical and luminescence properties of the bismuth borosilicate glass in compositions 40Bi2O3 : 20SiO2 : (40-x)B2O3 : xDy2O3 (where x = 0.0, 0.5, 1.0, 1.5, 2.0 and 2.5 mol%). The glass systems have been prepared at 1100 °C by melt quenching technique. The results showed that the density and molar volume of glass samples are between 4.6477 ± 0.0020 to 5.0047 ± 0.0041 g/cm3 and 45.6608 to 48.6797 cm3/mol, respectively. The values of density and molar volume of these glasses were not depend on the Dy2O3 concentration. The optical absorption spectra of glass samples in the UV-Vis-NIR region shows absorption bands at 794, 906, 1094, 1276 and 1690 nm, respectively. The photoluminescence spectra show emission bands at 482 (blue), 576 (green), 663 (yellow) and 756 (red) nm under 453 nm excitation wavelength. The emission spectrum at 576 nm has shown a strongest intensity.

Structural Studies of Lead Sodium Borate Glasses

2010 ◽  
Vol 93-94 ◽  
pp. 439-442
Author(s):  
Pruittipol Limkitjaroenporn ◽  
Jakrapong Kaewkhao ◽  
Suparat Tuscharoen ◽  
Pichet Limsuwan ◽  
Weerapong Chewpraditkul
Keyword(s):  
Molar Volume ◽  
Glass Network ◽  
Sodium Borate ◽  
Borate Glasses ◽  
Structural Studies ◽  
Melt Quenching ◽  
Network Modifier ◽  
Ir Analysis ◽  
Quenching Method ◽  
Glass Compositions

Glass compositions xPbO : 20Na2O : (80-x)B2O3 (x = 5,10,15,20,25,30,35,40,45,50 and 55 %mol) have been prepared using melt-quenching method. The density and molar volume of these glass samples have been found to be compositional dependent. The results indicate that PbO acts on the glass structures were different between the range 0≤ x ≤ 20 %mol and beyond x = 20 %mol (with inflection at x = 20 %mol). These due to the PbO can enter the glass network both as a network modifier and also as a network former. This role depends on the type of bond between lead and oxide. These results are interpreted in term of IR analysis.

Effect of Li2O and Na2O on Optical Properties of Bismuth Borate Glasses

2016 ◽  
Vol 675-676 ◽  
pp. 322-326
Author(s):  
Narong Sangwaranatee ◽  
Jakrapong Kaewkhao ◽  
Yotsakit Ruangtaweep
Keyword(s):  
Optical Properties ◽  
Optical Absorption ◽  
Molar Volume ◽  
Absorption Spectra ◽  
Borate Glasses ◽  
Optical Absorption Spectra ◽  
Melt Quenching ◽  
Bismuth Borate ◽  
Work Effect

In this work, effect of Li2O and Na2O on bismuth borate glasses have been investigated. The glass samples were prepared in composition 44B2O3 : 50Bi2O3 : 5Li2O : 1A2O3 and 44B2O3 : 50Bi2O3 : 5Na2O3 : 1A2O3 (where A2O3= Sm2O3 and Dy2O3).Glasses were prepared using the melt-quenching technique at 1,100 oc under normal atmosphere. The result found that, the density and molar volume of lithium bismuth borate glasses are less than sodium bismuth borate glasses both in Sm2O3 and Dy2O3. In addition, the optical absorption spectra and luminescence of lithium bismuth borate glasses are higher than sodium bismuth borate glasses both in Sm2O3 and Dy2O3.

scholarly journals Europium-doped boro-bismuth-tellurite glasses for multicolor phosphor applications

2016 ◽  
Vol 94 (2) ◽  
pp. 188-191 ◽  
Author(s):  
K. Keshavamurthy ◽  
B. Eraiah
Keyword(s):  
Band Gap ◽  
Molar Volume ◽  
Urbach Energy ◽  
Glass System ◽  
Band Gaps ◽  
Tellurite Glasses ◽  
Melt Quenching ◽  
Yellow Orange ◽  
Quenching Method ◽  
Indirect Band Gap

The glass system (50–x)B2O3–30Bi2O3–20TeO2–xEu2O3 (x = 0, 0.1, 0.5, 1.0, 1.5, and 2.0 mol%) having been prepared using the conventional melt quenching method, is investigated in terms of physical, optical, and luminescence properties. The density of these glasses is measured and the corresponding molar volume is also calculated. The (αhν)1/n versus hν graph was plotted and it is well fitted to both direct (n = 1/2) and indirect (n = 2) band gaps. The direct and indirect band gap values range from 2.57 to 2.94 eV and 1.74 to 2.58 eV, respectively. The Urbach energy of the glass system was calculated to have values ranging from 0.29 to 0.62 eV. Yellow, orange, and red emissions have been observed through photoluminescence (PL) spectroscopy excited at 464 nm and the obtained multicolor emissions have been demonstrated according to the Commission International de l’Eclairage de France 1931 standards. The results of PL studies indicated the possibility towards the development of multicolor phosphor applications.

Study on Physical and Photoluminescence Properties of Er3+Doped Zinc Barium Tellurite Glasses

2017 ◽  
Vol 728 ◽  
pp. 155-159 ◽  
Author(s):  
Patarawagee Yasaka ◽  
Yotsakit Ruangtaweep ◽  
Jakrapong Kaewkhao
Keyword(s):  
Molar Volume ◽  
Ground State ◽  
Atmospheric Pressure ◽  
Tellurite Glasses ◽  
Photoluminescence Spectra ◽  
Photoluminescence Properties ◽  
Melt Quenching ◽  
Absorption Bands ◽  
Volume Absorption ◽  
Doped Zno

Er3+-doped ZnO – BaO – TeO2 glasses with the formula (80-x)TeO2–15ZnO–5BaO–xEr2O3 were fabricated using melt quenching technique. The 5 glass samples with different concentrations of Er2O3 were prepared under atmospheric pressure. The samples were investigated on their properties: density, molar volume, absorption spectra and photoluminescence. Density was increased with an increase in Er3+ content. The molar volume trend is in the opposite way to that of the density. The absorption bands are assigned as absorptions from the 4I15/2 ground state to the 4F7/2, 2H11/2, 4S3/2, 4F9/2, 4I9/2, 4I11/2 and 4I13/2 levels. All absorption bands are increase with increasing content of Er3+. The photoluminescence spectra were measured with 980 nm light pumped by flash lamp. The spectra trends to increase with increasing concentration of the dopant.

scholarly journals Correlation of Optical and Mechanical Properties of Silver Nanoparticles Sensitized Europium Doped Magnesium Zinc Sulfophosphate Glasses

2020 ◽  
Vol 2 (2) ◽  
pp. 147-155
Author(s):  
Ibrahim Mohammed Danmalam ◽  
Ibrahim Bulus
Keyword(s):  
Mechanical Properties ◽  
Silver Nanoparticles ◽  
Vickers Hardness ◽  
Room Temperature ◽  
Surface Engineering ◽  
Glass Composition ◽  
Melt Quenching ◽  
Optical And Mechanical Properties ◽  
Quenching Method ◽  
The Relationship

Magnesium-zinc-sulfophosphate glasses with various concentration of Silver nanoparticles (AgNPs) of molar composition 63.5P2O5–20MgO –15ZnSO4–1.5Eu2O3 –yAgNps (y = 0.0, 0.1, 0.3, 0.5, 0.7,0.9 and 1.1 g in excess) were prepared via melt-quenching method.  As-synthesized glasses were characterized at room temperature to determine the relationship between structural and mechanical properties. Densities of glasses were increased from 3.0720 to 4.3304 g.cm-3 with increase in AgNPs embedding levels, suggesting the network shrinkages and enhanced compactness. The Young’s, shear and bulk modulus of glasses were observed to enhance with the increase in AgNPs contents. The Poisson’s ratio of the studied glasses was increased from (0.0978 to 0.1416) while the values of both Vickers hardness (from 0.0658 to 0. 0.0682 GPa) as well as  (from 0.8350 to 0.8916) were increased. The proposed glass composition may be useful for the development of hard surface engineering.

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