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22-07-2016

Few-layered graphene decked with TiO2 nano particles by ultrasonic assisted synthesis and its dye-sensitized solar cell application

Authors: Satish Bykkam, K. Venkateswara Rao, R. Naresh kumar, Ch. Shilpa Chakra, T. Dayakar

Published in: Journal of Materials Science: Materials in Electronics | Issue 12/2016

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Abstract

Few-layered graphene (FLG, 1.0, 2.0 and 3.0 wt%)/titania (TiO2) nanocomposites were prepared by ultrasonic assisted synthesis. The phase and compositional analysis of FLG/TiO2 nanocomposites were performed with X-ray diffraction and Raman spectroscopy, optical properties carried out by UV–Vis diffuse reflectance spectra and functional groups identified by Fourier transform infrared spectroscopy. Surface morphologies were characterized by field emission scanning electron microscopy and high-resolution transmission electron microscopy. The prepared FLG/TiO2 nanocomposites were used as working electrodes to form thin films deposited onto fluorine doped tin oxide through a doctor blade technique. The assembled solar cell, current density–voltage characteristics were measured with N719 dye under AM 1.5G, 100 m W/m2 of the solar simulator. The efforts showed that the optimized η was observed to be 6.70 % in appropriate with FLG (1.0 wt%)/TiO2 working electrode, compared to the TiO2 working electrode. However, by increasing wt% of FLG the η was decreased due to the surface interaction of FLG with TiO2 NPs. The results revealed that the FLG (1.0 wt%)/TiO2 working electrode has increased the electron charge transport rate which further leads to enhanced η of DSSC.

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Metadata
Title
Few-layered graphene decked with TiO2 nano particles by ultrasonic assisted synthesis and its dye-sensitized solar cell application
Authors
Satish Bykkam
K. Venkateswara Rao
R. Naresh kumar
Ch. Shilpa Chakra
T. Dayakar
Publication date
22-07-2016
Publisher
Springer US
Published in
Journal of Materials Science: Materials in Electronics / Issue 12/2016
Print ISSN: 0957-4522
Electronic ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-016-5388-2