Silver nanoparticles enhanced photoluminescence and the spectroscopic performances of Nd3+ ions in sodium lanthanum borate glass host: Effect of heat treatment

2021 ◽  
Author(s):  
B.N. Swetha ◽  
K. Keshavamurthy ◽  
Gaurav Gupta ◽  
Dalal Abdullah Aloraini ◽  
Aljawhara H. Almuqrin ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Silver Nanoparticles ◽  
Borate Glass ◽  
Glass Host ◽  
Enhanced Photoluminescence ◽  
Host Effect

Silver Negative-Ion Implantation into Thermally Grown Thin SiO2Film on Si Substrate and Heat Treatment for Formation of Silver Nanoparticles

2007 ◽  
Vol 46 (9B) ◽  
pp. 6260-6266 ◽  
Author(s):  
Nobutoshi Arai ◽  
Hiroshi Tsuji ◽  
Kouichirou Adachi ◽  
Hiroshi Kotaki ◽  
Yasuhito Gotoh ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Silver Nanoparticles ◽  
Ion Implantation ◽  
Negative Ion ◽  
Si Substrate ◽  
Thermally Grown

scholarly journals Heat Treatment Effect on Eu3+ Doped TeO2-BaO-Bi2O3 Glass Systems with Ag Nanoparticles

2017 ◽  
Vol 2017 ◽  
pp. 1-12 ◽  
Author(s):  
Tomasz Lewandowski ◽  
Michał Dembski ◽  
Michalina Walas ◽  
Marcin Łapiński ◽  
Magdalena Narajczyk ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Silver Nanoparticles ◽  
Photoelectron Spectroscopy ◽  
Rare Earth Ions ◽  
Molar Ratio ◽  
Excitation Wavelength ◽  
X Ray ◽  
Dsc Measurements ◽  
Heat Treated ◽  
Luminescence Measurement

Glass systems of 73TeO2-4BaO-3Bi2O3-2Eu2O3-xAg (in molar ratio where x = 0, 1, 2, and 3) compositions have been successfully synthesized. Silver nanoparticles were obtained with the employment of heat treatment (HT) procedure executed at 350°C. Glass transition temperatures of different compositions have been determined through DSC measurements. XRD results presented characteristic amorphous halo indicating lack of long range order in the samples. FTIR structural studies revealed that glass matrix is mainly composed of TeO3 and TeO4 species and is stable after different applied heat treatment times. X-ray photoelectron spectroscopy (XPS) measurements confirmed that in selected samples part of Ag ions changed oxidation state to form Ag0 species. TEM measurements revealed nanoparticles of size in the range of 20–40 nm. UV-vis absorption results demonstrated characteristic transitions of Eu3+ ions. Additionally, UV-vis spectra of samples heat-treated for 6, 12, 24, and 48 hours presented bands related to silver nanoparticles. Photoluminescence (PL) studies have been performed with excitation wavelength of λexc=395 nm. Obtained spectra exhibited peaks due to 5D0-7FJ (where J=2,3,4) and 5D1-7FJ (where J=1,2,3) transitions of Eu3+. Moreover, luminescence measurement indicated enhancement of rare earth ions emissions in several of the annealed samples. Increase of emission intensity of about 35% has been observed.

scholarly journals Browning of bismuth borate glass by heat treatment under vacuum

2012 ◽  
Vol 120 (1408) ◽  
pp. 599-602
Author(s):  
Kohei FUKUMI ◽  
Naoyuki KITAMURA ◽  
Junji NISHII
Keyword(s):  
Heat Treatment ◽  
Borate Glass ◽  
Bismuth Borate ◽  
Bismuth Borate Glass

Effect of Direct Current Electric Field Assisted Heat Treatment on the Luminescence Properties of TeO2-ZnO-Bi2O3 Glasses Containing Silver Nanoparticles

2021 ◽  
Vol 66 ◽  
pp. 13-25
Author(s):  
Min Hui Zhang ◽  
Jian Lin ◽  
Song Ye ◽  
Zi Min Zhu
Keyword(s):  
Heat Treatment ◽  
Silver Nanoparticles ◽  
Electric Field ◽  
Direct Current ◽  
Emission Intensity ◽  
Metallic Nanoparticles ◽  
Luminescence Properties ◽  
Luminescence Efficiency ◽  
Dc Electric Field ◽  
Current Electric Field

Introduction of metallic nanoparticles into glasses can obviously improve the up-conversion luminescence efficiency through surface plasmon resonance (SPR). In this research, the Er3+/Yb3+ co-doped TeO2-ZnO-Bi2O3 glasses containing silver nanoparticles and nanocrystals were prepared by direct current(DC) electric field assisted heat treatment, to study the effect of silver nanoparticles on the up-conversion luminescence properties of Er3+. The results show that, although the introduction of AgNO3 will weaken the thermal stability of TZB-ErYb to some extent, the number and size of silver nanoparticles can be increased after DC electric field treated at 100°C for 10 minutes. Meanwhile, the nanocrystals do not grow too large to affect the up-conversion emission intensity of Er3+. The up-conversion emission intensity of Er3+ in TZB-ErYb-6AgNO3-100°C-150V-10min is 43 times stronger than that of TZB-ErYb. These results indicate that DC electric field assisted heat treatment can synergistically adjust the silver nanoparticles and nanocrystals and is a promising method to improve the luminescence properties of tellurite glasses.

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