Metal-free organic chromophores featuring an ethynyl-thienothiophene linker with an n-hexyl chain for translucent dye-sensitized solar cells

Lim, D.-S., Park, K.-W., Wiles, A. A. and Hong, J. (2019) Metal-free organic chromophores featuring an ethynyl-thienothiophene linker with an n-hexyl chain for translucent dye-sensitized solar cells. Materials, 12(11), 1741. (doi: 10.3390/ma12111741) (PMID:31146349) (PMCID:PMC6600718)

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Abstract

We report the simple synthesis of two organic chromophores featuring an ethynyl-thienothiophene linker with an n-hexyl chain (CSD-03 and CSD-04), their optical and electrochemical properties, and their use as photosensitizers in dye-sensitized solar cells (DSSCs). Our theoretical and experimental studies show that adding the second thienothiophene allows for narrowing the bandgap of the molecule and thus ensuring more light harvesting in the visible region. The efficiencies of both CSD-03 (5.46 ± 0.03%) and CSD-04 (5.20 ± 0.03%) are comparable to that of N719 (5.92 ± 0.01%) in translucent DSSCs fabricated with 5 μm-thick TiO2 photoanodes.

Item Type:Articles
Additional Information:This work was supported by the National Research Foundation of Korea (NRF) Grant funded by the Ministry of Science and ICT for First-Mover Program for Accelerating Disruptive Technology Development (NRF-2018M3C1B9088457) and the Chung-Ang University Research Grants in 2015.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Wiles, Dr Alan
Authors: Lim, D.-S., Park, K.-W., Wiles, A. A., and Hong, J.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Materials
Publisher:MDPI
ISSN:1996-1944
ISSN (Online):1996-1944
Published Online:29 May 2019
Copyright Holders:Copyright © 2019 The Authors
First Published:First published in Materials 12(11): 1741
Publisher Policy:Reproduced under a Creative Commons License

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