Investigations on Luminescence Properties of Ce3+ Ion Doped Bismuth Borophosphate Glasses

2018 ◽  
Vol 879 ◽  
pp. 22-26 ◽  
Author(s):  
Natthakridta Chanthima ◽  
Thanapong Sareein ◽  
Yaowaluk Tariwong ◽  
Jakrapong Kaewkhao ◽  
Narong Sangwaranatee

Bismuth borophosphate glasses containing different doping cerium oxide have been synthesized at 1200 °C by melt-quenching technique. The doping concentration of the Ce3+ was varied from 0.05 mol% to 2.0 mol%. The glass samples were characterized through optical absorption and luminescence spectral measurements. UV-visible and near infrared absorption spectra of glass samples were not observed nevertheless the absorption edge was shift to the longer wavelength. The photoluminescence and radioluminescence spectra show emission bands around 367 nm under 317 nm excitation wavelength. Also, the highest emission intensity was found at 0.5 mol% CeF3 dopant for both of photoluminescence and radioluminescence.

2014 ◽  
Vol 979 ◽  
pp. 343-346 ◽  
Author(s):  
Natthakridta Chanthima ◽  
Jakrapong Kaewkhao

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.


2014 ◽  
Vol 979 ◽  
pp. 280-284
Author(s):  
Narong Sangwaranatee ◽  
Yaowaluk Tariwong ◽  
Sunisa Sarachai ◽  
Jakrapong Kaewkhao ◽  
Natthakridta Chanthima

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.


1978 ◽  
Vol 21 (85) ◽  
pp. 559-563
Author(s):  
L. Couture

AbstractNear-infrared absorption spectra of a frozen dilute solution of ytterbium chloride have been obtained at 77 K, 20 K, and 4.2 K. They contain two broad lines revealing a Stark splitting of 60 cm-1 of the excited 2F5/2, level of the Yb3+ ion. Such spectra indicate that in frozen solutions of ytterbium chloride the Yb3+ ions have crystalline or quasi-crystalline surroundings which are similar for most ions; different possibilities are discussed.


1978 ◽  
Vol 21 (85) ◽  
pp. 559-563 ◽  
Author(s):  
L. Couture

Abstract Near-infrared absorption spectra of a frozen dilute solution of ytterbium chloride have been obtained at 77 K, 20 K, and 4.2 K. They contain two broad lines revealing a Stark splitting of 60 cm-1 of the excited 2F5/2, level of the Yb3+ ion. Such spectra indicate that in frozen solutions of ytterbium chloride the Yb3+ ions have crystalline or quasi-crystalline surroundings which are similar for most ions; different possibilities are discussed.


2014 ◽  
Vol 979 ◽  
pp. 171-174
Author(s):  
Nuanthip Wantana ◽  
Hong Joo Kim ◽  
Onanong Chamlek ◽  
Jakrapong Kaewkhao ◽  
Natthakridta Chanthima

The lithium lanthanum borate glasses doped with Dy2O3 were prepared by the melt quenching technique. The Dy2O3 doped concentration has been increased and substituted B2O3 from 0.00 to 1.50 mol% in the glasses. The photoluminescence, optical absorption and physical properties of these glasses have been investigated in this work. The experimental results show that, the molar volume of glasses tended to increase with increasing of Dy2O3 concentration, but the density were not depending on the concentration of Dy2O3. The UV-Vis-NIR spectra, absorption bands at 451, 798, 894, 1085 1264 and 1676 nm have been observed. For Dy3+ doped glasses, emission bands centered at 483, 575 and 664 nm have been observed with 388 nm excitation wavelength. The emission spectra have shown the strongest band in the glasses with 0.50 mol% Dy2O3 concentration.


2017 ◽  
Vol 728 ◽  
pp. 137-142
Author(s):  
Keerati Kirdsiri ◽  
Jakrapong Kaewkhao

Lutetuim calcium silico borates (LuCaSiB) glasses doped with Nd3+ ions with molar composition of Lu2O3-CaO-SiO2-B2O3-Nd2O3 have been prepared by conventional melt quenching technique. Their properties have been evaluated throughout the density, refractive index, absorption and emission measurements. The density, molar volume and refractive index increase with increasing Nd2O3 concentration. The optical absorption spectra show twelve bands in visible and near infrared regions. The luminescence spectra exhibit three emission bands were observed at 900, 1072 and 1341 nm corresponding to 4F3/2 → 4I9/2, 4I11/2 and 4I13/2 transition respectively.


2018 ◽  
Vol 879 ◽  
pp. 27-31 ◽  
Author(s):  
Natthakridta Chanthima ◽  
Yaowaluk Tariwong ◽  
Thanapong Sareein ◽  
Jakrapong Kaewkhao ◽  
Nisakorn W. Sangwaranatee

In this work, the optical and luminescence properties of Dy2O3 doped barium phosphate glass with different alkaline earth oxides (MgO, CaO and SrO) have been investigated. The glass samples were prepared by the melt-quenching technique at the melting temperature of 1200 °C. The absorption spectra of glasses were recorded in the ultraviolet, visible and near infrared (UV-Vis-NIR) region. The absorption bands centered at 385, 424, 452, 472, 754, 803, 901, 1093, 1273 and 1683 nm, respectively have been observed. The emission spectra of glass samples centered at 482, 574, 662 and 751 nm, respectively have been observed with 350 nm excitation wavelength. The result of radioluminescence spectra were slightly different with photoluminescence spectra. The coordinate of emitting color (x, y) for 350 excitation wavelength is 0.3781 and 0.4252, respectively which is located in white light region of CIE diagram.


2016 ◽  
Vol 675-676 ◽  
pp. 351-354
Author(s):  
Natthakridta Chanthima ◽  
Jakrapong Kaewkhao

Er3+ ions doped bismuth borophosphate glasses are prepared in different concentration by the conventional melting-quenching method at 1200 °C. Physical properties, absorption and luminescence spectra under visible excitation are investigated. The results showed that density of glasses tended to decrease with increasing the concentration of Er2O3. While, the molar volume of glasses tended to increase with increasing the concentration of Er2O3. The optical absorption spectra were clearly observed in ultraviolet (UV), visible light (VIS) and near infrared (NIR) region. Visible emission spectra have been recorded by exciting the glass samples at 326 nm. The strongest intensity was the green emission at 521 nm. The luminescence intensity was found to increase with Er2O3 content up to 0.8 mol% and it was decreased for higher Er2O3 contents due to concentration quenching effect.


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