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Kwon, Tae-Hyuk
Energy Recognition
Research Interests
  • Energy transfer, organic solar cells, supercapacitor, ultrasonic spray chemistry, dithienothiophene, iridium complexes, phosphorescent bioapplications

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High-efficiency dye-sensitized solar cells with ferrocene-based electrolytes

Cited 230 times inthomson ciCited 218 times inthomson ci
Title
High-efficiency dye-sensitized solar cells with ferrocene-based electrolytes
Author
Daeneke, TorbenKwon, Tae-HyukHolmes, Andrew B.Duffy, Noel W.Bach, UdoSpiccia, Leone
Issue Date
2011-03
Publisher
NATURE PUBLISHING GROUP
Citation
NATURE CHEMISTRY, v.3, no.3, pp.211 - 215
Abstract
Dye-sensitized solar cells based on iodide/triiodide (I(-)/I(3)(-)) electrolytes are viable low-cost alternatives to conventional silicon solar cells. However, as well as providing record efficiencies of up to 12.0%, the use of I(-)/I(3)(-) in such solar cells also brings about certain limitations that stem from its corrosive nature and complex two-electron redox chemistry. Alternative redox mediators have been investigated, but these generally fall well short of matching the performance of conventional I(-)/I(3)(-) electrolytes. Here, we report energy conversion efficiencies of 7.5% (simulated sunlight, AM1.5, 1,000 W m(-2)) for dye-sensitized solar cells combining the archetypal ferrocene/ferrocenium (Fc/Fc(+)) single-electron redox couple with a novel metal-free organic donor-acceptor sensitizer (Carbz-PAHTDTT). These Fc/Fc(+)-based devices exceed the efficiency achieved for devices prepared using I(-)/I(3)(-) electrolytes under comparable conditions, revealing the great potential of ferrocene-based electrolytes in future dye-sensitized solar cells applications. This improvement results from a more favourable matching of the redox potential of the ferrocene couple with that of the new donor-acceptor sensitizer.
URI
https://scholarworks.unist.ac.kr/handle/201301/8690
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=79951991979
DOI
10.1038/NCHEM.966
ISSN
1755-4330
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