Romanian Journal of Information Science and Technology (ROMJIST)

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ROMJIST is a publication of Romanian Academy,
Section for Information Science and Technology

Editor – in – Chief:
Academician Dan Dascalu

Secretariate (office):
Adriana Neagu
Adress for correspondence: romjist@nano-link.net (after 1st of January, 2019)

Editing of the printed version: Mihaela Marian (Publishing House of the Romanian Academy, Bucharest)

Technical editor
of the on-line version:
Lucian Milea (University POLITEHNICA of Bucharest)

Sponsors:
• National Institute for R & D
in Microtechnologies
(IMT Bucharest), www.imt.ro
• Association for Generic
and Industrial Technologies (ASTEGI), www.astegi.ro

ROMJIST Volume 23, No. 1, 2020, pp. 105-112, Paper no. 641/2020
 

S. SARAVANAN, R. S. DUBEY
Synthesis of SiO2 Nanoparticles by Sol-Gel Method and Their Optical and Structural Properties

ABSTRACT: This paper focuses on the sol-gel synthesis of SiO2 nanoparticles for solar cells. The prepared samples were characterized by Fourier transform infrared (FTIR) spectroscopy, dynamic light scattering (DLS), fluorescence (FL) spectroscopy and scanning electron microscopy (SEM). Fourier transform infrared spectroscopy studies revealed the presence of Si-O-Si stretching vibration bonding at 1093, 798 and 459cm-1. SEM micrograph showed nearly irregular SiO2 nanoparticles. The calculated average particle diameter was 192 nm by DLS technique. The FL spectrum shows an emission band at 644.8 nm in the visible range and two broad excitation peaks at 359 and 718 nm. The optical and morphological properties of the as-prepared SiO2 nanoparticles are presented.

KEYWORDS: Sol-gel, SiO2 nanoparticles, scattering, fluorescence, morphology

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