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장성연

Jang, Sung-Yeon
Renewable Energy and Nanoelectronics Lab.
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Highly Efficient Plastic Crystal Ionic Conductors for Solid-state Dye-sensitized Solar Cells

Author(s)
Hwang, DaesubKim, Dong YoungJo, Seong MuArmel, VanessaMacFarlane, Douglas R.Kim, DonghoJang, Sung-Yeon
Issued Date
2013-12
DOI
10.1038/srep03520
URI
https://scholarworks.unist.ac.kr/handle/201301/26797
Fulltext
https://www.nature.com/articles/srep03520
Citation
SCIENTIFIC REPORTS, v.3, pp.3520
Abstract
We have developed highly efficient, ambient temperature, solid-state ionic conductors (SSICs) for dye-sensitized solar cells (DSSCs) by doping a molecular plastic crystal, succinonitrile (SN), with trialkyl-substituted imidazolium iodide salts. High performance SSICs with enhanced ionic conductivity (2-4 mScm(-1)) were obtained. High performance solid-state DSSCs with power conversion efficiency of 7.8% were fabricated using our SSICs combined with unique hierarchically nanostructured TiO2 sphere (TiO2-SP) photoelectrodes; these electrodes have significant macroporosity, which assists penetration of the solid electrolyte into the electrode. The performance of our solid-state DSSCs is, to the best of our knowledge, the highest reported thus far for cells using plastic crystal-based SSICs, and is comparable to that of the state-of-the-art DSSCs which use ionic liquid type electrolytes. This report provides a logical strategy for the development of efficient plastic crystal-based SSICs for DSSCs and other electrochemical devices.
Publisher
NATURE PUBLISHING GROUP
ISSN
2045-2322

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