Abstract
The performances of fiber dye-sensitized solar cells (FDSSCs), in terms of charge collection efficiency, light-harvesting ability, and structural stability, are improved through a novel hierarchically structured photoanode based on a Ti microridge/nanorod-modified wire substrate. The microridge made of several Ti micropits is inserted into TiO2 layer to shorten the photoelectron transport distance from the original place in the TiO2 layer to substrate and to increase the electron transport rate. The Ti micropits are used as light-gathering centers to collect the reflected light. Meanwhile, the Ti nanorods are evenly distributed on the surface of the microridge-coated Ti wire substrate, which increases the contact area between the substrate and the TiO2 layer in order to suppress the electron recombination and scatters the incident light to further improve the light-harvesting ability. Therefore, the charge collection and power conversion efficiencies of the novel FDSSC have been accordingly enhanced by 17.7% and 61.6%, respectively, compared with traditional FDSSC. Moreover, the structural stability of the novel FDSSC has been strengthened.
Original language | English (US) |
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Pages (from-to) | 95-102 |
Number of pages | 8 |
Journal | Nano Energy |
Volume | 49 |
DOIs | |
State | Published - Jul 2018 |
Bibliographical note
Funding Information:This work was supported by the research grants of ( NRF-2017R1A2B2002607 ) NRF funded by the National Research Foundation under the Ministry of Science, ICT & Future, Republic of Korea; the framework of international cooperation program managed by the National Research Foundation of Korea (NRF-2017K2A9A2A06015754, FY2017), and KIST Institutional Program ( 2E28141 ). The authors also thank Mr. Joo Man Woo for the support during the preparation of this study.
Funding Information:
This work was supported by the research grants of (NRF-2017R1A2B2002607) NRF funded by the National Research Foundation under the Ministry of Science, ICT & Future, Republic of Korea; the framework of international cooperation program managed by the National Research Foundation of Korea (NRF-2017K2A9A2A06015754, FY2017), and KIST Institutional Program (2E28141). The authors also thank Mr. Joo Man Woo for the support during the preparation of this study.
Publisher Copyright:
© 2018 Elsevier Ltd
Keywords
- Charge collection efficiency
- Fiber-shaped dye-sensitized solar cell
- Light harvesting
- Light scattering
- Titanium based photoanode
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- General Materials Science
- Electrical and Electronic Engineering