Title: High performance photoelectrode of dye-sensitised solar cells by Mo-Ce doped TiO2 nanoparticles/nanotubes

Authors: Ji Won Kim; Kyung Hwan Kim; Chang Seob Kim; Hyung Wook Choi

Addresses: Department of Electrical Engineering, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-Si, Gyeonggi-Do 461-701, South Korea ' Department of Electrical Engineering, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-Si, Gyeonggi-Do 461-701, South Korea ' Department of Energy IT, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-Si, Gyeonggi-Do 461-701, South Korea ' Department of Electrical Engineering, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-Si, Gyeonggi-Do 461-701, South Korea

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 JSC of 14.80 mA/cm2 under a simulated solar light irradiation of 100 mW/cm2 (AM 1.5).

Keywords: dye-sensitised solar cells; DSSC; TiO2 nanotubes; titanium dioxide; titania; CeO2; cerium dioxide; MoO3; molybdenum trioxide; photoelectrodes; nanoparticles; nanotechnology; sol-gel; hydrothermal doping; solar energy; solar power.

DOI: 10.1504/IJNT.2016.080359

International Journal of Nanotechnology, 2016 Vol.13 No.10/11/12, pp.790 - 800

Published online: 16 Nov 2016 *

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