Tarafder, Anal and Karmakar, Basudeb and Molla, Atiar Rahaman (2018) Nano Gold (Au0) and Au0-Er3+ Containing Plasmonic K2O-ZnO-iO2 Glass Nanocomposites:Processing and Properties. Transactions of the Indian Ceramic Society, 77 (1). pp. 12-19. ISSN 0371-750X (Submitted)

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Abstract

In this paper, the nano gold (Au) and nano gold-erbium (Au-Er) co-embedded potassium zinc silicate based monolithic plasmonic glass nanocomposites have been evaluated. These plasmonic glass nanocomposites of Au are prepared by a controlled heat-treatment technique of the K2O-ZnO-SiO2 (KZS) as-prepared glasses obtained by the melt-quench technique. Differential scanning calorimeter, dilatometer, ultra violet (UV)-visible absorption spectrophotometer, X-ray diffractometer, transmission electron microscope (TEM), hardness tester, Fourier transform infrared (FTIR) spectrometer, prism coupler and spectrofluorimeter were used to characterize the as-prepared glasses and glass nanocomposites. A gradual creation of more Au0 nanoparticles (NPs) with prolongation of heat-treatment time resulted strong surface plasmon resonance (SPR) band around 520 nm in the glass nanocomposite samples. A decr eased photoluminescence (PL) spectral intensities of Er 3+ ion around 550 and 1540 nm due to 2H11/2,4S3/2 →4I15/2 and 4I13/2 →4I15/2 emission transitions is observed with an increase in heat-treatment time. This decrease is caused by the lower excitation spectral intensity of Er3+ ions and higher absorption intensity of Au0 nanoparticles around 523 nm with progressive increases in heat-treatment time. The advantages of this series of glass nanocomposites are al so discussed.

Item Type:	Article
Subjects:	Glass
Divisions:	Glass
Depositing User:	Bidhan Chaudhuri
Date Deposited:	18 Sep 2018 07:10
Last Modified:	18 Sep 2018 07:10
URI:	http://cgcri.csircentral.net/id/eprint/3911

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