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Jun, Yongseok
Lab for Solar innovation
Research Interests
  • Dye-Sensitized Solar Cell

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Observation of Positive Effects of Freestanding Scattering Film in Dye-Sensitized Solar Cells

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Title
Observation of Positive Effects of Freestanding Scattering Film in Dye-Sensitized Solar Cells
Author
Shin, KaheeJun, YongseokMoon, Jun HyukPark, Jong Hyeok
Keywords
Bi-layer; Cell efficiency; Cell performance; Dye-Sensitized solar cell; Dye-sensitized solar cells; Electrochemical impedance analysis; High efficiency; Light-scattering films; Light-scattering layer; Long term stability; Nanocrystalline TiO; Polymeric binder; Positive effects; Power conversion efficiencies; Submicrometers; TiO
Issue Date
201001
Publisher
AMER CHEMICAL SOC
Citation
ACS APPLIED MATERIALS & INTERFACES, v.2, no.1, pp.288 - 291
Abstract
Dye-sensitized solar cells (DSSCs) with a nanocrystalline TiO(2) as a anode incorporating a free-standing and Flexible light-scattering film composed of sub-micrometer-sized Al(2)O(3) particles with a small amount of ion-transportable polymeric binder were prepared and compared to DSSCs composed of a nanocrystalline TiO(2)/sub-micrometer-sized TiO2 bilayer as an anode. The cell efficiency of the former was higher than that of the latter. This implies that the enhancement of the light absorption as that obtained with a general DSSC with light-scattering layer (sub-micrometer-sized TiO(2)) is possible by combining a high-surface-area layer of nanocrystalline TiO(2) and free-standing light scattering him. The novel DSSCs with the free-standing light scattering him showed an additional resistance, which was characterized by the electrochemical impedance analysis. However, the cell performance was not seriously influenced by the additional resistance. When the free-standing scattering film was assembled with Flexible type DSSCs, not only a greatly enhanced power conversion efficiency but also better long-term stability than the DSSC without the light scattering film were observed.
URI
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DOI
http://dx.doi.org/10.1021/am900691c
ISSN
1944-8244
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