Kim, Seok-Soon Na, Seok-In Nah, Yoon-Chae 2024-01-20T15:34:38Z 2024-01-20T15:34:38Z 2021-09-05 2011-12-30 0013-4686 https://pubs.kist.re.kr/handle/201004/129705 To increase the efficiency of TiO2 nanotube-based dye-sensitized solar cells, we fabricated TiO2 nanotubes and decorated them with ZnO rod-like nanostructures via anodization of Ti metal sheets followed by the hydrothermal growth of ZnO. Compared to conventionally anodized nanotubes, the modified nanotubes provided a higher specific surface area for dye adsorption. Besides increased dye adsorption, suppression of the recombination of photo-induced electrons at the electrode/electrolyte interface was observed in the modified nanotube-based systems because of the existence of a ZnO thin layer on the surface of nanotubes. This thin layer was applied as a seed for an oriented growth of ZnO. Dye-sensitized solar cells based on TiO2 nanotubes decorated with ZnO rod-like nanostructures showed a higher power conversion efficiency of 3.84%, compared to standard nanotube devices with an efficiency of 2.06%. (C) 2011 Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD NANOPOROUS ELECTRODES PERFORMANCE NANORODS GROWTH NANOPARTICLES NANOWIRES ARRAYS TiO2 nanotubes decorated with ZnO rod-like nanostructures for efficient dye-sensitized solar cells Article 10.1016/j.electacta.2011.09.076 1 ELECTROCHIMICA ACTA, v.58, pp.503 - 509 ELECTROCHIMICA ACTA 58 503 509 scie scopus 000298765300068 2-s2.0-81855198997 Electrochemistry Electrochemistry Article NANOPOROUS ELECTRODES PERFORMANCE NANORODS GROWTH NANOPARTICLES NANOWIRES ARRAYS Dye-sensitized solar cells TiO2 nanotubes Anodization ZnO rod-like nanostructure Hydrothermal synthesis