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Polymers 2014, 6(10), 2645-2669;

Fused-Thiophene Based Materials for Organic Photovoltaics and Dye-Sensitized Solar Cells

Department of Chemistry, National Central University, Jhong-Li 32001, Taiwan
Department of Chemistry, PSG College of Arts and Science, Coimbatore 641014, India
Department of Chemical and Biomolecular Engineering, Sogang University, 1 Shinsoo-dong, Mapo-gu, Seoul 121742, Korea
Department of Electrical Engineering, National Cheng-Kung University, No.1 University road, Tainan 701, Taiwan
Authors to whom correspondence should be addressed.
Received: 10 September 2014 / Revised: 7 October 2014 / Accepted: 15 October 2014 / Published: 22 October 2014
(This article belongs to the Special Issue Organic Solar Cells)
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Organic photovoltaics (OPVs) and dye-sensitized solar cells (DSSCs) have drawn great interest from both academics and industry, due to the possibility of low-cost conversion of photovoltaic energy at reasonable efficiencies. This review focuses on recent progress in molecular engineering and technological aspects of fused-thiophene-based organic dye molecules for applications in solar cells. Particular attention has been paid to the design principles and stability of these dye molecules, as well as on the effects of various electrolyte systems for DSSCs. Importantly, it has been found that incorporation of a fused-thiophene unit into the sensitizer has several advantages, such as red-shift of the intramolecular charge transfer band, tuning of the frontier molecular energy level, and improvements in both photovoltaic performance and stability. This work also examines the correlation between the physical properties and placement of fused-thiophene in the molecular structure with regard to their performance in OPVs and DSSCs. View Full-Text
Keywords: organic photovoltaics; dye-sensitized solar cells; solar energy; fused-thiophenes organic photovoltaics; dye-sensitized solar cells; solar energy; fused-thiophenes

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Kumaresan, P.; Vegiraju, S.; Ezhumalai, Y.; Yau, S.L.; Kim, C.; Lee, W.-H.; Chen, M.-C. Fused-Thiophene Based Materials for Organic Photovoltaics and Dye-Sensitized Solar Cells. Polymers 2014, 6, 2645-2669.

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