Graphene-titania films by supersonic kinetic spraying for enhanced performance of dye-sensitized solar cells
- Authors
- Kim, Do-Yeon; Joshi, Bhavana N.; Park, Jung-Jae; Lee, Jong-Gun; Cha, You-Hong; Seong, Tae-Yeon; Noh, Suk In; Ahn, Hyo-Jin; Al-Deyabe, Salem S.; Yoon, Sam S.
- Issue Date
- 8월-2014
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Graphene-titania; Dye-sensitized solar cell; Aerosol deposition; Supersonic kinetic spraying
- Citation
- CERAMICS INTERNATIONAL, v.40, no.7, pp.11089 - 11097
- Indexed
- SCIE
SCOPUS
- Journal Title
- CERAMICS INTERNATIONAL
- Volume
- 40
- Number
- 7
- Start Page
- 11089
- End Page
- 11097
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/97845
- DOI
- 10.1016/j.ceramint.2014.03.131
- ISSN
- 0272-8842
- Abstract
- Graphene-titania films were fabricated by supersonic kinetic spray, known as aerosol deposition. Graphene concentration was varied to fabricate 0.1, 0.3, 0.5, 0.7, and 1.0 wt% G-TiO2 films for dye-sensitized solar cell (DSSC) application and to investigate the effect of graphene concentration on their energy conversion efficiency. The G TiO2 films were characterized and analyzed based on results from SEM, XRD, XPS, TEM, and the current-voltage curve. The optimal concentration was 0.3 wt%, which decreased the recombination rate, favoring the formation of photogenerated electron-hole pairs. As a result, the conversion efficiency was 5.02% while that of the pure TiO2 was 3.14%. A clear trend per various concentrations was observed. At higher concentrations than 0.3 wt%, the conversion efficiency decreased owing to higher absorption of light by graphene present on the surface, thus reducing the generation of electron-hole pairs. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
- College of Engineering > Department of Mechanical Engineering > 1. Journal Articles
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