Title: One-step hydrothermal synthesis of titanium dioxide decorated on reduced graphene oxide for dye-sensitised solar cells application

Authors: Foo Wah Low; Chin Wei Lai; Sharifah Bee Abd Hamid

Addresses: Nanotechnology & Catalysis Research Centre (NANOCAT), Institute of Postgraduate Studies (IPS), University of Malaya, 3rd Floor, Block A, 50603 Kuala Lumpur, Malaysia ' Nanotechnology & Catalysis Research Centre (NANOCAT), Institute of Postgraduate Studies (IPS), University of Malaya, 3rd Floor, Block A, 50603 Kuala Lumpur, Malaysia ' Nanotechnology & Catalysis Research Centre (NANOCAT), Institute of Postgraduate Studies (IPS), University of Malaya, 3rd Floor, Block A, 50603 Kuala Lumpur, Malaysia

Abstract: Dye-sensitised solar cells (DSSCs) are one of the promising prospects for efficient renewable resources. To bring DSSCs to the point of commercial readiness and viability in terms of performance and cost, substantial research on the development of a high efficiency DSSCs system is necessary. Our recent studies have indicated that a maximum conductivity of 29.1 µS/cm and conversion efficiency of 4.76% under 1.5 AM condition was successfully achieved from 0.2 wt% TiO₂ loaded on reduced graphene oxide (rGO) forming a nanocomposite film, which is approximately twice or three times higher than that of pure rGO nanosheets and anatase TiO₂ film. The findings were mainly attributed to the fact that rGO nanosheets could further increase the photo-induced electron transportation rate and minimise the recombination losses within the TiO₂ lattice in this binary hybrid photoelectrode.

Keywords: reduced graphene oxide; rGO; titanium dioxide; rGO-TiO₂ nanocomposite; dye-sensitised solar cells; DSSCs.

DOI: 10.1504/IJNT.2018.089561

International Journal of Nanotechnology, 2018 Vol.15 No.1/2/3, pp.78 - 92

Published online: 30 Jan 2018 *

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