78 Int. J. Nanotechnol., Vol. 15, Nos. 1/2/3, 2018 Copyright © 2018 Inderscience Enterprises Ltd. One-step hydrothermal synthesis of titanium dioxide decorated on reduced graphene oxide for dye-sensitised solar cells application Foo Wah Low, Chin Wei Lai and Sharifah Bee Abd Hamid* Nanotechnology & Catalysis Research Centre (NANOCAT), Institute of Postgraduate Studies (IPS), University of Malaya, 3rd Floor, Block A, 50603 Kuala Lumpur, Malaysia Email: raymondlow85@gmail.com Email: cwlai@um.edu.my Email: sharifahbee@um.edu.my *Corresponding author 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% TiO 2 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 TiO 2 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 TiO 2 lattice in this binary hybrid photoelectrode. Keywords: reduced graphene oxide; rGO; titanium dioxide; rGO-TiO 2 nanocomposite; dye-sensitised solar cells; DSSCs. Reference to this paper should be made as follows: Low, F.W., Lai, C.W. and Abd Hamid, S.B. (2018) ‘One-step hydrothermal synthesis of titanium dioxide decorated on reduced graphene oxide for dye-sensitised solar cells application’, Int. J. Nanotechnol., Vol. 15, Nos. 1/2/3, pp.78–92. Biographical notes: Foo Wah Low received his Master Degree in Institute of Nanoelectronic Engineering from Universiti Malaysia Perlis (UniMAP) in 2013. Currently, he is a PhD student with full time research in Nanotechnology & Catalysis Research Centre (NANOCAT), University of Malaya (UM). His research interests include material science, environmental science, and solar panel system. Chin Wei Lai is a Senior Lecturer in the Nanotechnology & Catalysis Research Centre, University of Malaya. He received his PhD (2013) from School of Materials and Mineral Resources Engineering, University of Science Malaysia