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Photoanode Using Hollow Spherical TiO2 for Duel Functions in Dye-Sensitized Solar Cell

Title
Photoanode Using Hollow Spherical TiO2 for Duel Functions in Dye-Sensitized Solar Cell
Author
이성철
Keywords
Dye Sensitized Solar Cell; Hollow Sphere; Scattering Layer
Issue Date
2013-12
Publisher
AMER SCIENTIFIC PUBLISHERS, 26650 THE OLD RD, STE 208, VALENCIA, CA 91381-0751 USA
Citation
Journal of Nanoscience and Nanotechnology, Vol.13, No.12 [2013], p7906-7911
Abstract
We report a new fabrication method of a bilayer photoanode for dye sensitized solar cell having highly crystalline TiO2 with hollow spherical nanoparticles. The hollow spherical TiO2 nanoparticles in DSSC work not only as scattering layer but also as channel of electrolyte. This is due to the fact that incident light is scattered by the hollow spherical nanoparticle according to Mie theory and spherical hollow spheres allow the empty space inside each sphere to circulate the electrolyte more effectively. The nanoparticles were synthesized by hydrothermal method. The space inside the spheres was fully developed by Ostwald Ripening process and the size of hollow spheres was controlled by concentration of PVPs and hydrothermal synthesis conditions (time and temperature). The nanoparticle size and photoanode morphology of the hollow spheres were measured by scanning electron microscope (SEM). Finally, the power conversion efficiency of 6.26% has been achieved under AM 1.5G simulated sunlights (100 mW cm(-2)).
URI
http://www.ingentaconnect.com/content/asp/jnn/2013/00000013/00000012/art00022http://hdl.handle.net/20.500.11754/46334
ISSN
1533-4880
DOI
10.1166/jnn.2013.8116
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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