Upconversion Luminescence and Optical Studies of Nd3+ in Bismuth Borate Glasses

2013 ◽  
Vol 770 ◽  
pp. 153-156
Author(s):  
Onanong Chamlek ◽  
Pruittipol Limkitjaroenporn ◽  
Hong Joo Kim ◽  
Jakrapong Kaewkhao
Keyword(s):  
Energy Level ◽  
Band Gap ◽  
Glass Matrix ◽  
Optical Band Gap ◽  
Upconversion Luminescence ◽  
Emission Spectra ◽  
Borate Glasses ◽  
Optical Studies ◽  
Melt Quenching ◽  
Bismuth Borate

Neonymium doped bismuth borate glasses with composition 50Bi2O3 : (50-x)B2O3: xNd2O3 (where x = 0.5, 1.0, 1.5, 2.0 and 2.5 mol%) have been prepared by melt quenching technique. The optical and upconversion luminescence properties of glasses were investigated. The nine absorption peaks were observed, correspond with Nd3+ energy level in glass. The optical band gap decreased with increasing Nd2O3 concentration due to the increase of non-bridging oxygen (NBOs) in glass matrix. The upconversion luminescence emission spectra shows peak at 393 nm, assign to 4D3/24I11/2 transition.

Effect of Addition TiO2 on Bi2O3-TiO2-B2O3 Glasses

2013 ◽  
Vol 770 ◽  
pp. 72-75 ◽  
Author(s):  
Keerati Kirdsiri ◽  
Nattapon Srisittipokakun ◽  
Yotsakit Ruangtaweep ◽  
Kitipun Boonin ◽  
Pichet Limsuwan ◽  
...  
Keyword(s):  
Band Gap ◽  
Molar Volume ◽  
Optical Band Gap ◽  
Measurement Techniques ◽  
Spectroscopic Properties ◽  
Borate Glasses ◽  
Visible Spectroscopy ◽  
Melt Quenching ◽  
Bismuth Borate ◽  
Uv Visible

Bismuth titanium borate glasses in compositions xTiO2 : (30-x)Bi2O3 : 70B2O3 (with x is in mol%, varying from 0% to 10%) were fabricated by the conventional melt quenching technique. The effect of TiO2 on the physical and spectroscopic properties of bismuth borate glasses have been carried out by means of density and UV-Visible spectroscopy measurement techniques. The density and molar volume of all glasses are found to change depend on TiO2 substitution. The fundamental absorption edges for all glasses have been identified using the theory proposed by Davis and Mott. The optical band gap (Eg) is found to decrease with increase in TiO2 content.

scholarly journals Compositional dependence of optical band gap and refractive index in lead and bismuth borate glasses

2015 ◽  
Vol 68 ◽  
pp. 27-34 ◽  
Author(s):  
Saisudha B. Mallur ◽  
Tyler Czarnecki ◽  
Ashish Adhikari ◽  
Panakkattu K. Babu
Keyword(s):  
Refractive Index ◽  
Band Gap ◽  
Optical Band Gap ◽  
Borate Glasses ◽  
Compositional Dependence ◽  
Bismuth Borate

Upconversion Luminescence and Optical Studies of Nd3+: Bi2O3–B2O3–P2O5 Glasses

2014 ◽  
Vol 979 ◽  
pp. 390-394
Author(s):  
Natthakridta Chanthima ◽  
Narong Sangwaranatee
Keyword(s):  
Molar Volume ◽  
Ground State ◽  
Glass Matrix ◽  
Luminescence Band ◽  
Upconversion Luminescence ◽  
Optical Studies ◽  
Melt Quenching ◽  
Absorption Bands ◽  
Borophosphate Glass ◽  
Quenching Method

The bismuth borophosphate glass matrix doped with Nd2O3have been prepared by conventional melt quenching method with the molar compositions of 25Bi2O3: 5B2O3: (70-x)P2O5: xNd2O3(where x = 0.2, 0.4, 0.6, 0.8 and 1.0 mol%). The density, molar volume, optical absorption and upconversion luminescnece spectra were studied. It can be seen that the density is not depend on Nd2O3concentration. The molar volume is tending to be decreased with increasing of Nd2O3due to the decrease in the bond length or interatomic spacing between the atoms. Ten absorption bands at 427, 471, 510, 525, 580 , 622, 682, 743, 802 and 873 nm are observed, which could be ascribed to Nd3+transitions from the4I9/2ground state to2P1/2,2G9/2,4G9/2,4G7/2,4G5/2+2G7/2,2H11/2,4F9/2,4F7/2+4S3/2,4F5/2+4H9/2and4F3/2levels. The upconversion luminescence band at 394 nm was observed and the highest emission intensity was obtained at 0.8 mol% of Nd2O3.

Physical and Optical Properties of Ce3+ Doped in Bismuth Borate Glass

2013 ◽  
Vol 770 ◽  
pp. 254-257 ◽  
Author(s):  
Kitipun Boonin ◽  
Onanong Chamlek ◽  
Pruittipol Limkitjaroenporn ◽  
Hong Joo Kim ◽  
Jakrapong Kaewkhao
Keyword(s):  
Optical Properties ◽  
Absorption Spectra ◽  
Borate Glass ◽  
Optical Band Gap ◽  
Composition Range ◽  
Borate Glasses ◽  
Melt Quenching ◽  
Bismuth Borate ◽  
Bismuth Borate Glass ◽  
No Absorption

Bismuth borate glasses doped with cerium in the composition 50Bi2O3:(50-x)B2O3:xCeF3 were prepared for the composition range 0x2.5 (in mol%). The glass samples have been fabricated by the conventional melt quenching technique. The physical and optical properties of glass samples were investigated. The optical absorption spectra of the glasses have been measured in the wavelength range 190-1100 nm and no absorption peak was obtained in this region. The absorption spectra of all samples were shifted to longer wavelength with increasing of CeF3 concentrations. Optical band gap decreased and refractive index increased with increasing of CeF3 concentrations.

Investigation some Properties of Bismuth Borate Glasses Containing Al2O3

2016 ◽  
Vol 675-676 ◽  
pp. 347-350
Author(s):  
Sopanat Kongsriprapan ◽  
Kanyakorn Teanchai ◽  
Keerati Kirdsiri ◽  
Jakrapong Kaewkhao ◽  
Wichian Siriprom
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Band Gap ◽  
Energy Band ◽  
Glass Matrix ◽  
Borate Glass ◽  
Borate Glasses ◽  
Energy Band Gap ◽  
Bismuth Borate ◽  
Bismuth Borate Glass

The glass samples in bismuth borate glass matrix containing Al2O3, with the composition of xAl2O3 : 30Bi2O3 : (70-x)B2O3 where x are Al2O3 concentration varying from 0.0, 2.0, 4.0, 6.0, 8.0 and 10.0 mol%, have been prepared. The obtained glasses were investigated some physical and optical properties. The results showed that the densities increased with increasing of Al2O3 concentration, whereas the molar volumes decreased. For the absorption spectra, no peak in the UV to NIR regions has been observed. Moreover the energy band gap and the refractive index for all samples have been calculated.

White Light Emission from Dy3+ Doped Zinc Bismuth Borate and Bismuth Borate Glasses: A Comparative Study

2016 ◽  
Vol 675-676 ◽  
pp. 409-413 ◽  
Author(s):  
Patarawagee Yasaka ◽  
Kitipun Boonin ◽  
Jakrapong Kaewkhao
Keyword(s):  
Chemical Composition ◽  
Borate Glass ◽  
Light Emission ◽  
Emission Spectra ◽  
Borate Glasses ◽  
Melt Quenching ◽  
Absorption Bands ◽  
Bismuth Borate ◽  
Chromaticity Coordinates ◽  
Bismuth Borate Glass

In this study, the effect of zinc bismuth borate (ZBB) glass and bismuth borate glass (BB) doped with trivalent dysprosium ion were investigated. Glass were prepared by the conventional melt quenching technique, with the chemical composition of (60-x) B2O3: 30Bi2O3: 10ZnO: xDy2O3 and (70-x) B2O3: 30Bi2O3: xDy2O3 where x = 1.0 mol %. The results show the densities of glasses are 3.91 g/cm3(ZBB) and 4.24 g/cm3 (BB), respectively. The absorption spectra consists of six absorption bands that are located at 752, 796, 902, 1096, 1276 and 1681 nm, and are assigned to 6H15/2 to 6F3/2,6F5/2, 6F7/2, 6H7/2+6F9/2, 6F11/2+6H9/2 and 6H11/2 transitions. The emission spectra exhibited three emission bands corresponding to the 4F9/2 → 6H15/2 (483 nm; blue), 4F9/2 → 6H13/2 (575 nm; yellow) and 4F9/2 → 6H11/2 (664 nm; red) transitions. The lifetime for 4F9/2 → 6H13/2 transition are 0.178 ms (ZBB) and 0.420 ms (BB). Both of Dy3+ in ZBB and BB glasses have been show white emission and illustrated by CIE 1931 chromaticity coordinates.

Photo and X-Rays Induced Optical Luminescence of Sm3+-Doped Bismuth Borate Glasses

2014 ◽  
Vol 979 ◽  
pp. 413-416
Author(s):  
Pruittipol Limkitjaroenporn ◽  
Kitipun Boonin ◽  
Patarawagee Yasaka ◽  
Hong Joo Kim ◽  
Jakrapong Kaewkhao
Keyword(s):  
Emission Spectra ◽  
Borate Glasses ◽  
X Rays ◽  
Melt Quenching ◽  
Exponential Behavior ◽  
Bismuth Borate ◽  
Broad Emission ◽  
Optical Luminescence ◽  
The Relationship ◽  
Single Exponential

Samarium doped bismuth borate glasses with composition 66.7Bi2O3: (33.3-x)B2O3: x Sm2O3(where x = 0.5, 1.0, 1.5, 2.0 and 2.5 mol%) have been prepared by melt quenching technique. The physical, optical, photoluminescence and X-rays luminescence properties were investigated. The densities and molar volumes were not found the relationship with the increasing samarium concentration. The photoluminescence emission spectra shows broad emission bands due to4G5/2→6HJ(J=5/2, 7/2, 9/2, 11/2) transitions when excited with 473 nm. The decay curves of4G5/2level exhibited single exponential behavior for all the concentrations and the measured lifetimes are found to depend strongly on samarium concentrations. The X-rays emission spectra were measured at the X-rays of intensity 100kV and current 1.5mA. The emission peaks observed at 569, 598, 641 and 705 nm. And the intensity of luminescence increase as samarium concentration increase.

Synthesis and Luminescence Properties of Sm3+ in Bismuth Borate Glass

2013 ◽  
Vol 770 ◽  
pp. 42-45
Author(s):  
Suwat Rakpanich ◽  
Natthakridta Chanthima ◽  
Hong Joo Kim ◽  
Mitra Djamal ◽  
Pichet Limsuwan ◽  
...  
Keyword(s):  
Energy Level ◽  
Emission Spectrum ◽  
Borate Glass ◽  
Optical Measurements ◽  
Chemical Compositions ◽  
Borate Glasses ◽  
Melt Quenching ◽  
Bismuth Borate ◽  
Quenching Method ◽  
Bismuth Borate Glass

In this research present the results of the analysis of Sm3+ ions doped bismuth borate glasses. Optical measurements such as absorption, excitation and emission profiles have been carried out. Glasses with the chemical compositions (50-x)B2O350Bi2O3xSm2O3 (x = 0.0, 0.5, 1.0, 1.5, 2.50 and 2.5 mol%) were prepared using a conventional melt-quenching method. The emission spectrum of Sm3+ doped bismuth borate glasses has shown the emission transitions of to 4G5/26H 5/2 (563 nm), 4G5/26H 7/2 (598 nm), 4G5/26H9/2 (644 nm). Energy level schemes relating to the emission mechanisms involved in Sm3+ glasses have been given.

Optical Properties of Silica Borotellurite Glass Doped with Manganese Oxide

2017 ◽  
Vol 268 ◽  
pp. 18-22 ◽  
Author(s):  
I. Zaitizila ◽  
Mohamed Kamari Halimah ◽  
Farah Diana Mohammad ◽  
Mohd Shah Nurisya
Keyword(s):  
Optical Properties ◽  
Manganese Oxide ◽  
Band Gap ◽  
Diffraction Pattern ◽  
Optical Band Gap ◽  
Urbach Energy ◽  
Molar Fraction ◽  
Chemical Formula ◽  
Melt Quenching ◽  
Amorphous Nature

Silica borotellurite glasses doped with manganese oxide with chemical formula {[(TeO2)0.7(B2O3)0.3­]0.8[SiO2]0.2}1-x{MnO2}x (where x = 0.0, 0.01, 0.02, 0.03, 0.04 and 0.05 molar fraction) were fabricated. Silica were extracted from the burning process of rice husk. Glass samples were prepared by using the melt-quenching technique. The FTIR spectra showed that the addition of MnO₂ contributed to the transformation of TeO4 to TeO3. The diffraction pattern of XRD showed a broad hump which indicates the amorphous nature of the samples. The result for both optical band gap and Urbach energy showed decreasing trend as the concentration of manganese increased.

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