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Multiple linker half-squarylium dyes for dye-sensitized solar cells; are two linkers better than one?

Arthur Connell, Peter Holliman Orcid Logo, Eurig W. Jones, Leo Furnell, Christopher Kershaw, Matthew Davies Orcid Logo, Christopher D. Gwenin, Mateusz B. Pitak, Simon J. Coles, Graeme Cooke

Journal of Materials Chemistry A, Volume: 3, Issue: 6, Pages: 2883 - 2894

Swansea University Authors: Peter Holliman Orcid Logo, Matthew Davies Orcid Logo

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DOI (Published version): 10.1039/C4TA06896C

Abstract

The synthesis and full characterization of new half-squaraine dyes (Hf-SQ) containing two or three carboxylate-based linker units is reported and these dyes tested in dye-sensitized solar cell (DSC) devices. The data show improved device efficiency for a Hf-SQ dye with two linkers (η = 5.5%) compare...

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Published in: Journal of Materials Chemistry A
ISSN: 2050-7488 2050-7496
Published: 2015
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URI: https://cronfa.swan.ac.uk/Record/cronfa21549
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first_indexed 2015-05-20T02:03:26Z
last_indexed 2018-09-18T18:12:29Z
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spelling 2018-09-18T13:38:45.3168846 v2 21549 2015-05-19 Multiple linker half-squarylium dyes for dye-sensitized solar cells; are two linkers better than one? c8f52394d776279c9c690dc26066ddf9 0000-0002-9911-8513 Peter Holliman Peter Holliman true false 4ad478e342120ca3434657eb13527636 0000-0003-2595-5121 Matthew Davies Matthew Davies true false 2015-05-19 MTLS The synthesis and full characterization of new half-squaraine dyes (Hf-SQ) containing two or three carboxylate-based linker units is reported and these dyes tested in dye-sensitized solar cell (DSC) devices. The data show improved device efficiency for a Hf-SQ dye with two linkers (η = 5.5%) compared to the highest efficiency Hf-SQ previously reported which had only a single linker (η = 5.0%); this is mainly due to improved Voc. To understand the effects of using multiple dye linker groups, device I–V data have been correlated with single crystal X-ray structural analysis and dye electrical properties (both in solution and adsorbed to TiO2) using UV-visible and ATR-IR spectroscopy along with cyclic voltammetry, and also theoretical studies using density functional theory (DFT) calculations. These data show that positioning the linkers near the dye LUMO and so that this enables complete linker chemisorption are key factors for device performance. Journal Article Journal of Materials Chemistry A 3 6 2883 2894 2050-7488 2050-7496 31 12 2015 2015-12-31 10.1039/C4TA06896C COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2018-09-18T13:38:45.3168846 2015-05-19T14:38:38.7188323 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering Arthur Connell 1 Peter Holliman 0000-0002-9911-8513 2 Eurig W. Jones 3 Leo Furnell 4 Christopher Kershaw 5 Matthew Davies 0000-0003-2595-5121 6 Christopher D. Gwenin 7 Mateusz B. Pitak 8 Simon J. Coles 9 Graeme Cooke 10
title Multiple linker half-squarylium dyes for dye-sensitized solar cells; are two linkers better than one?
spellingShingle Multiple linker half-squarylium dyes for dye-sensitized solar cells; are two linkers better than one?
Peter Holliman
Matthew Davies
title_short Multiple linker half-squarylium dyes for dye-sensitized solar cells; are two linkers better than one?
title_full Multiple linker half-squarylium dyes for dye-sensitized solar cells; are two linkers better than one?
title_fullStr Multiple linker half-squarylium dyes for dye-sensitized solar cells; are two linkers better than one?
title_full_unstemmed Multiple linker half-squarylium dyes for dye-sensitized solar cells; are two linkers better than one?
title_sort Multiple linker half-squarylium dyes for dye-sensitized solar cells; are two linkers better than one?
author_id_str_mv c8f52394d776279c9c690dc26066ddf9
4ad478e342120ca3434657eb13527636
author_id_fullname_str_mv c8f52394d776279c9c690dc26066ddf9_***_Peter Holliman
4ad478e342120ca3434657eb13527636_***_Matthew Davies
author Peter Holliman
Matthew Davies
author2 Arthur Connell
Peter Holliman
Eurig W. Jones
Leo Furnell
Christopher Kershaw
Matthew Davies
Christopher D. Gwenin
Mateusz B. Pitak
Simon J. Coles
Graeme Cooke
format Journal article
container_title Journal of Materials Chemistry A
container_volume 3
container_issue 6
container_start_page 2883
publishDate 2015
institution Swansea University
issn 2050-7488
2050-7496
doi_str_mv 10.1039/C4TA06896C
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Chemical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemical Engineering
document_store_str 0
active_str 0
description The synthesis and full characterization of new half-squaraine dyes (Hf-SQ) containing two or three carboxylate-based linker units is reported and these dyes tested in dye-sensitized solar cell (DSC) devices. The data show improved device efficiency for a Hf-SQ dye with two linkers (η = 5.5%) compared to the highest efficiency Hf-SQ previously reported which had only a single linker (η = 5.0%); this is mainly due to improved Voc. To understand the effects of using multiple dye linker groups, device I–V data have been correlated with single crystal X-ray structural analysis and dye electrical properties (both in solution and adsorbed to TiO2) using UV-visible and ATR-IR spectroscopy along with cyclic voltammetry, and also theoretical studies using density functional theory (DFT) calculations. These data show that positioning the linkers near the dye LUMO and so that this enables complete linker chemisorption are key factors for device performance.
published_date 2015-12-31T03:25:35Z
_version_ 1763750901974040576
score 10.999207

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