학술논문
Synthesis of titanium dioxide nanorods combining with titanium dioxide nanoparticles/reduced graphene oxide nanocomposite for fabrication of photoanodes in dye–sensitized solar cells.
Document Type
Article
Author
Source
Subject
*TITANIUM dioxide nanoparticles
*DYE-sensitized solar cells
*TITANIUM dioxide
*NANORODS
*NANOCOMPOSITE materials
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Language
ISSN
1066-7857
Abstract
Titanium dioxide nanoparticles/reduced graphene oxide nanocomposite (TG) was synthesised by ex situ method. The obtained nanocomposite was screen–printed onto surface modified fluorine-doped tin oxide (FTO) plates with titanium dioxide nanorods (TNRs) to prepare dye–sensitised solar cells (DSSCs). The electrochemical properties of as-prepared photoanodes were analysed via current density–voltage curves and electrochemical impedance spectroscopy. Characterisation of TG was measured by modern analytical methods. Results indicated that the DSSCs reached an efficiency of 6.76% with 1 wt.% content of graphene oxide (GO) precursor, higher than that of commercial titanium dioxide nanoparticles (TNPs) photoanodes. Furthermore, transmission electron microscopy images demonstrated that TNPs with a diameter of 20–25 nm were well distributed on reduced graphene oxide (rGO) sheets. TNRs exhibited lengths in the range of 2.7 to 3.0 µm and an average diameter of 0.7 µm. The TNRs combining TG demonstrated potential in improving DSSCs efficiency. [ABSTRACT FROM AUTHOR]