Journal
MATERIALS
Volume 8, Issue 12, Pages 8860-8867Publisher
MDPI AG
DOI: 10.3390/ma8125499
Keywords
dye-sensitized solar cells; nanorods; AZO film
Categories
Funding
- Green Technology Research Center of Chang Gung University
- Ministry of Science and Technology of Taiwan [MOST104-2622-E-182-003-CC3, MOST104-2112-M-182-005]
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In this study, aligned zinc oxide (ZnO) nanorods (NRs) with various lengths (1.5-5 mu m) were deposited on ZnO:Al (AZO)-coated glass substrates by using a solution phase deposition method; these NRs were prepared for application as working electrodes to increase the photovoltaic conversion efficiency of solar cells. The results were observed in detail by using X-ray diffraction, field-emission scanning electron microscopy, UV-visible spectrophotometry, electrochemical impedance spectroscopy, incident photo-to-current conversion efficiency, and solar simulation. The results indicated that when the lengths of the ZnO NRs increased, the adsorption of D-719 dyes through the ZnO NRs increased along with enhancing the short-circuit photocurrent and open-circuit voltage of the cell. An optimal power conversion efficiency of 0.64% was obtained in a dye-sensitized solar cell (DSSC) containing the ZnO NR with a length of 5 mu m. The objective of this study was to facilitate the development of a ZnO-based DSSC.
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