Journal
NANOMATERIALS
Volume 10, Issue 8, Pages -Publisher
MDPI
DOI: 10.3390/nano10081598
Keywords
titanium dioxide; zinc oxide; core-shell nanorods; mist chemical vapor deposition; dye-sensitized solar cell
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Funding
- Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan
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Well-arrayed zinc oxide nanorods applied as photoelectrodes for dye-sensitized solar cells were synthesized on an aluminum-doped zinc oxide substrate by the multi-annealing method. In order to improve the chemical stability and surface-to-volume ratio of photoanodes in dye-sensitized solar cells, the synthesized zinc oxide nanorods were coated with pure anatase phase titanium dioxide film using a novel mist chemical vapor deposition method. The effects of the titanium dioxide film on the morphological, structural, optical, and photovoltaic properties of zinc oxide-titanium dioxide core-shell nanorods were investigated. It was found that the diameter and surface-to-volume ratio of zinc oxide nanorods were significantly increased by coating them with titanium dioxide thin film. The power conversion efficiency of dye-sensitized solar cells was improved from 1.31% to 2.68% by coating titanium dioxide film onto the surface of zinc oxide nanorods.
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