TiO2/silver/carbon nanotube nanocomposite working electrodes for high-performance dye-sensitized solar cells
- Title
- TiO2/silver/carbon nanotube nanocomposite working electrodes for high-performance dye-sensitized solar cells
- Other Titles
- silver
- Author
- 김학성
- Keywords
- Dye-sensitized solar cell; surface plasmon effect; TiO2; silver nanoparticles; carbon nanotube
- Issue Date
- 2014-05
- Publisher
- EDP SCIENCES S A, 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE
- Citation
- Journal of composite materials, 2014, 48(14), pp.1679 - 1690
- Abstract
- In this study, we developed a new way to increase the efficiency of dye-sensitized solar cells by using TiO2/silver/carbon nanotube composites as the working electrode. Silver nanoparticles and multi-walled carbon nanotubes were mixed with TiO2 nanoparticles and used as working electrodes in a dye-sensitized solar cell. The effect of the silver nanoparticles and multi-walled carbon nanotubes on the efficiency of the dye-sensitized solar cell was studied as function of their volume fractions using several microscopic and spectroscopic characterization techniques such as scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, ultra-violet-vis and electrochemical impedance spectroscopy. It was found that the silver nanoparticles could induce surface plasmonic phenomena, where the light absorption was enhanced in the ultra-violet wavelength range. Additionally, the carbon nanotubes could increase the electron mobility in the working electrode due to their high surface-to-volume ratio and superior electrical conductivity. The efficiency of the silver/carbon nanotube/TiO2 nanocomposite working electrode was compared with that of a conventional TiO2 working electrode under one-sun illumination (100mWcm(-2), AM 1.5 G). The TiO2/Ag/carbon nanotube nanocomposite working electrode had a two-fold higher efficiency (3.76%) than the conventional pure TiO2 working electrode (1.88%).
- URI
- http://journals.sagepub.com/doi/abs/10.1177/0021998313490215?journalCode=jcmahttp://hdl.handle.net/20.500.11754/46106
- ISSN
- 0021-9983
- DOI
- 10.1177/0021998313490215
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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