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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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Highly improved photocurrents of dye-sensitized solar cells containing ultrathin 3D inverse opal electrodes sensitized with a dithienothiophene-based organic dye

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Title
Highly improved photocurrents of dye-sensitized solar cells containing ultrathin 3D inverse opal electrodes sensitized with a dithienothiophene-based organic dye
Author
Kwon, Tae-HyukHa, Su-JinKim, Jeong SooCho, Chang-YeolLee, Jung WooHan, Hyun-GyuMoon, Jun Hyuk
Issue Date
2014-10
Publisher
ROYAL SOC CHEMISTRY
Citation
RSC ADVANCES, v.4, no.77, pp.40980 - 40984
Abstract
Ultrathin but highly efficient dye-sensitized solar cells (DSCs) may be beneficial for making flexible devices and lowering production costs. Here, a uniform, ultrathin inverse opal (IO) electrode sensitized with a dithienothiophene (DTT)-based sensitizer (Carbz-PAHTDTT) was successfully prepared and demonstrated as a high-efficiency DSC electrode. The ultrathin IO was fabricated using a polystyrene opal template subsequently coated with TiO2via a chemical vapor deposition approach. The Carbz-PAHTDTT-sensitized IO film was compared to an IO film sensitized by a conventional N719 dye. The charge collection efficiency of the Carbz-PAHTDTT-sensitized TiO2IO electrode was comparable to the N719-sensitized electrode. However, the Carbz-PAHTDTT TiO2IO electrode DSCs exhibited remarkably high light-harvesting efficiency due to high adsorption density and visible light absorption features of the Carbz-PAHTDTT-sensitized electrode. The Carbz-PAHTDTT DSCs containing a 3.5 μm thick IO electrode displayed a photocurrent density of 11.23 mA cm-2, which was 1.5 times higher compared to the N719-sensitized DSCs.
URI
https://scholarworks.unist.ac.kr/handle/201301/6643
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84907158297
DOI
10.1039/c4ra06847e
ISSN
2046-2069
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