High performance photoelectrode of dye-sensitised solar cells by Mo-Ce doped TiO₂ nanoparticles/nanotubes
by Ji Won Kim; Kyung Hwan Kim; Chang Seob Kim; Hyung Wook Choi
International Journal of Nanotechnology (IJNT), Vol. 13, No. 10/11/12, 2016

Abstract: The one-dimensional structure of TiO₂ provides improved photoelectric performance, but it has a small surface area that reduces the adsorption of dye on its surface. Therefore, in this study, TiO₂ nanoparticles doped with different amounts of cerium (CeO₂) prepared using the sol-gel method and molybdenum (MoO₃)-doped TiO₂ nanotube photoelectrodes were successfully fabricated via the three-step anodisation of titanium followed by a hydrothermal doping treatment process. The samples were characterised by XRD, SEM, UV-vis, EIS, and I-V curves. The results indicate that metal-doped TiO₂ nanoparticles/nanotubes exhibit a broadened absorption in the visible region and a reduced ion recombination as well. The dye-sensitised solar cells (DSSCs) show a maximum conversion efficiency of 6.14% and J_SC of 14.80 mA/cm² under a simulated solar light irradiation of 100 mW/cm² (AM 1.5).

Online publication date: Wed, 16-Nov-2016

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