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Issue 77, 2014
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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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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 TiO2 via 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 TiO2 IO electrode was comparable to the N719-sensitized electrode. However, the Carbz-PAHTDTT TiO2 IO 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.

Graphical abstract: 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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Supplementary files

Article information


Submitted
09 Jul 2014
Accepted
21 Aug 2014
First published
04 Sep 2014

RSC Adv., 2014,4, 40980-40984
Article type
Paper

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

S. Ha, J. S. Kim, C. Cho, J. W. Lee, H. Han, T. Kwon and J. H. Moon, RSC Adv., 2014, 4, 40980
DOI: 10.1039/C4RA06847E

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