Physical, Structural and Luminescence Properties of ZnO-Bi2O3-B2O3 Glass System

2013 ◽  
Vol 431 ◽  
pp. 8-13 ◽  
Author(s):  
Patarawagee Yasaka ◽  
K. Boonin ◽  
P. Limsuwan ◽  
W. Chewpraditkul ◽  
N. Pattanaboonmee ◽  
...  
Keyword(s):  
Decay Time ◽  
Optical Spectra ◽  
Glass System ◽  
Luminescence Properties ◽  
Photoluminescence Spectra ◽  
Melt Quenching ◽  
Structural Units ◽  
Ir Studies ◽  
Increase With Increase

The ZnO-Bi2O3-B2O3(ZBB) glasses with different concentrations of Bi2O3have been prepared by a conventional melt quenching technique and investigated the effect of Bi2O3on the physical, structural and luminescence properties. The density and hardness of glasses are also measured and found to increase with increase of Bi2O3concentration. The IR studies indicate that these glasses are made up of [BiO3], [BO3], [BO4] and [B basic structural units. From optical spectra, the cut-off wavelengths were shifted from 423 nm to 447 nm as the content of Bi2O3increases from 15 to 30 mol%. The photoluminescence spectra exhibit characteristic peaks at 602 nm corresponding to3P11S0transitions of Bi3+. The decay time for3P1level of Bi3+increases with increase of Bi2O3concentration.

Effect of BaO on physical, optical and structural characteristics of ZnO– Al2O3–B2O3 glasses

2015 ◽  
Vol 11 (3) ◽  
pp. 3190-3197
Author(s):  
H. A. Saudi
Keyword(s):  
Optical Band Gap ◽  
Structural Characteristics ◽  
Band Gap Energy ◽  
Borate Glasses ◽  
Barium Borate ◽  
Melt Quenching ◽  
Structural Units ◽  
Gap Energy ◽  
Ir Studies ◽  
Absorption Studies

Zinc barium borate glasses with composition (65-x) B2O3-10Na2O-10Al2O3-10ZnO-5Li2O-xBaO with (0 ≤ x ≤40 % mol)have been prepared using melt quenching technique.The density, molar volume and the optical absorption studies revealed that the optical band gap energy (Eopt) and Urbachenergy increase with the increase of BaOcontent.This is mainly due to the increased polarization of theBa2+ ions and theenhanced formation of non-bridging oxygen (NBO). The IR studies indicate that these glasses are made up of [AlO6],[BO3],[BO4], and [AlO4] basic structural units.

Optical and Luminescence Properties of Dy3+ Doped in Soda Lime Borate Glasses

2016 ◽  
Vol 702 ◽  
pp. 51-56 ◽  
Author(s):  
Suwimon Ruengsri ◽  
Nattapon Srisittipokakun ◽  
Falak Zaman ◽  
Gul Rooh ◽  
Jakrapong Kaewkhao
Keyword(s):  
Photo Luminescence ◽  
Soda Lime ◽  
Luminescence Properties ◽  
Luminescence Spectra ◽  
Excitation Wavelength ◽  
White Led ◽  
Photoluminescence Spectra ◽  
Melt Quenching ◽  
Hypersensitive Transition ◽  
Absorption Measurements

The aim of this study is to develop soda lime borate (SLB) doped with Dy3+ glass and investigate their optical and luminescence properties, for different applications in photonics and optoelectronics. The glass were melt by conventional melt quenching technique. Optical properties have been determined by measuring their absorption spectra and luminescence properties were studied by photo luminescence spectra. From optical absorption measurements, there are ten peaks with transition 6H15/2 to 6F11/2 + 6H9/2 at 1262 nm has higher spectral intensity and is a hypersensitive transition. As a result of 350 nm excitation the photoluminescence spectra have four peaks. Higher luminescence intensity peak was observed for 0.5 mol% Dy3+ doped SLB glass at 4F9/2 to 6H13/2 (575 nm). Hence it is suggest from the chromaticity results that SLB glasses with different Dy2O3 concentration may be a promising glass for white LED under 350 nm excitation wavelength. Further investigation is under way for the optimization of different dopend concentration in the SLB glass.

Investigation of Luminescence Properties of Dy3+ Doped Alkaline Earth Oxides Barium Phosphate Glasses

2018 ◽  
Vol 879 ◽  
pp. 27-31 ◽  
Author(s):  
Natthakridta Chanthima ◽  
Yaowaluk Tariwong ◽  
Thanapong Sareein ◽  
Jakrapong Kaewkhao ◽  
Nisakorn W. Sangwaranatee
Keyword(s):  
Alkaline Earth ◽  
Near Infrared ◽  
Emission Spectra ◽  
Phosphate Glasses ◽  
Luminescence Properties ◽  
Excitation Wavelength ◽  
Photoluminescence Spectra ◽  
Melt Quenching ◽  
Absorption Bands ◽  
Light Region

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.

scholarly journals Up- and Downconversion Luminescence Properties of Nd3+Ions Doped in Bi2O3–BaO–B2O3Glass System

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
R. Ruamnikhom ◽  
P. Limsuwan ◽  
M. Horprathum ◽  
N. Chanthima ◽  
H. J. Kim ◽  
...  
Keyword(s):  
Radiative Decay ◽  
Excited State Absorption ◽  
Upconversion Emission ◽  
Luminescence Properties ◽  
Barium Borate ◽  
Melt Quenching ◽  
Strong Fluorescence ◽  
Nir Emission ◽  
Quenching Method ◽  
Barium Borate Glass

Physical, optical, and luminescence properties of Nd3+ions in bismuth barium borate glass system were studied. The glasses prepared by a melt quenching method were doped at various Nd2O3concentrations in compositions (40-x)B2O3 : 40Bi2O3 : 20BaO : xNd2O3(wherex= 0.00, 0.50, 1.00, 1.50, 2.00, and 2.50 in mol%). Luminescence properties of the glasses were studied under two excitations of 585 and 750 nm for downconversion. From both excitations, the results show emission bands in NIR region corresponding to the transitions between4F3/2 → 4I9/2(900 nm),4F3/2 → 4I11/2(1,060 nm), and4F3/2 → 4I13/2(1,345 nm). The luminescence intensity obtained with 585 nm excitation was stronger than 750 nm, with the strongest NIR emission at 1,060 nm. The upconversion emission spectrum exhibits strong fluorescence bands in the UV region at 394 nm (λex=591 nm). The processes are associated with excited state absorption (ESA) from4F3/2level to4D3/2level and it is the radiative decay from the4D3/2to ground levels (4D3/2 → 4I13/2) which are responsible for the emission at 394 nm.

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.

Physical, optical and luminescence properties of Sm 3+ doped lithium aluminium phosphate glass system

2018 ◽  
Vol 5 (7) ◽  
pp. 15066-15071 ◽  
Author(s):  
N. Chanthima ◽  
Y. Tariwong ◽  
M. Djamal ◽  
J. Kaewkhao ◽  
N. Sangwaranatee
Keyword(s):  
Phosphate Glass ◽  
Glass System ◽  
Luminescence Properties ◽  
Aluminium Phosphate ◽  
Lithium Aluminium

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.

Luminescence Properties of Eu[sup 2+]-Activated (Al[sub 2]O[sub 3]⋅2SiO[sub 2]) Phosphor by Photoluminescence Spectra

2004 ◽  
Vol 7 (6) ◽  
pp. H23 ◽  
Author(s):  
Joung Kyu Park ◽  
Mi Ae Lim ◽  
Chang Hae Kim ◽  
Hee Dong Park ◽  
Se Young Choi
Keyword(s):  
Luminescence Properties ◽  
Photoluminescence Spectra

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.

STRUCTURAL STUDY OF x(Fe2O3·V2O5)·(100-x)[P2O5·Li2O] GLASS SYSTEM BY FTIR SPECTROSCOPY

2006 ◽  
Vol 20 (02n03) ◽  
pp. 105-110 ◽  
Author(s):  
I. ARDELEAN ◽  
C. ANDRONACHE ◽  
C. CÎMPEAN ◽  
P. PǍŞCUŢǍ
Keyword(s):  
Ir Spectra ◽  
Ftir Spectroscopy ◽  
Structural Study ◽  
Local Structure ◽  
Glass System ◽  
Nonbridging Oxygen ◽  
Structural Units ◽  
Oxygen Ions ◽  
Structure Of Glasses ◽  
Vanadium Ions

Glasses of the x( Fe 2 O 3· V 2 O 5)·(100-x)[ P 2 O 5· Li 2 O ] system, with 0≤x≤50 mol %, were prepared and investigated by FTIR spectroscopy in an attempt to determine the local structure of glasses. The interpretation of the obtained IR spectra revealed the presence and the dependence of the local structural units in the studied glasses on the iron and vanadium ions content. The results showed that phosphate units are the main structural units of the glass system and the iron and vanadium ions are located in the network. The increasing of iron and vanadium ions content indicate a gradual decreasing in the number of bridging oxygen ions and an increasing in the number of nonbridging oxygen ions.

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