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Wrinkled silica/titania nanoparticles with tunable interwrinkle distances for efficient utilization of photons in dye-sensitized solar cells

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Title
Wrinkled silica/titania nanoparticles with tunable interwrinkle distances for efficient utilization of photons in dye-sensitized solar cells
Author(s)
Jin Soo Kang; Lim J.; Rho W.-Y.; Jin Kim; Moon D.-S.; Juwon Jeong; Jung D.; Jung-Woo Choi; Lee J.-K.; Yung-Eun Sung
Publication Date
2016-08
Journal
SCIENTIFIC REPORTS, v.6, pp.30829
Publisher
NATURE PUBLISHING GROUP
Abstract
Efficient light harvesting is essential for the realization of high energy conversion efficiency in dye-sensitized solar cells (DSCs). State-of-the-art mesoporous TiO2 photoanodes fall short for collection of long-wavelength visible light photons, and thus there have been efforts on introduction of scattering nanoparticles. Herein, we report the synthesis of wrinkled silica/titania nanoparticles with tunable interwrinkle distances as scattering materials for enhanced light harvesting in DSCs. These particles with more than 20 times larger specific surface area (>400 m2/g) compared to the spherical scattering particles (<20 m2/g) of the similar sizes gave rise to the dye-loading amounts, causing significant improvements in photocurrent density and efficiency. Moreover, dependence of spectral scattering properties of wrinkled particles on interwrinkle distances, which was originated from difference in overall refractive indices, was observed. © The Author(s) 2016
URI
https://pr.ibs.re.kr/handle/8788114/3141
DOI
10.1038/srep30829
ISSN
2045-2322
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > 1. Journal Papers (저널논문)
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