'Donor-free' oligo(3-hexylthiophene) dyes for efficient dye-sensitized solar cells
The common trend in designing dyes for use in DSSCs with iodide-based electrolyte is based on a donor-π spacer-acceptor (D-π-A) architecture. Here, we report two 'donor-free' cyanoacrylic end-functionalized oligo(3-hexylthiophene) dyes ( 5T and 6T ). Despite having no donor group, both dye...
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| Veröffentlicht in: | Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2016-01, Vol.4 (7), p.259-2516 |
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| container_title | Journal of materials chemistry. A, Materials for energy and sustainability |
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| creator | Hu, Yue Ivaturi, Aruna Planells, Miquel Boldrini, Chiara L Biroli, Alessio Orbelli Robertson, Neil |
| description | The common trend in designing dyes for use in DSSCs with iodide-based electrolyte is based on a donor-π spacer-acceptor (D-π-A) architecture. Here, we report two 'donor-free' cyanoacrylic end-functionalized oligo(3-hexylthiophene) dyes (
5T
and
6T
). Despite having no donor group, both dyes show reversible first oxidation process. Both
5T
and
6T
have
n
-hexyl alkyl chains to retard aggregation at different positions as well as different numbers of thiophene moieties. However, the dyes showed similar absorption properties and redox potentials. The DSSCs based on these dyes give power conversion efficiencies of more than 7%, although a significant difference in the
V
OC
and FF has been observed. Using electrochemical impedance spectroscopy, this is attributed to the presence of more trap states when
6T
attaches to TiO
2
and modifies the surface, mainly affecting the fill factor. Overall, these dyes introduce a new and effective design concept for liquid-electrolyte DSSC sensitisers.
Easily synthesized 'donor-free' dyes work as efficient sensitisers for dye-sensitised solar cells. |
| doi_str_mv | 10.1039/c5ta09133k |
| format | Article |
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5T
and
6T
). Despite having no donor group, both dyes show reversible first oxidation process. Both
5T
and
6T
have
n
-hexyl alkyl chains to retard aggregation at different positions as well as different numbers of thiophene moieties. However, the dyes showed similar absorption properties and redox potentials. The DSSCs based on these dyes give power conversion efficiencies of more than 7%, although a significant difference in the
V
OC
and FF has been observed. Using electrochemical impedance spectroscopy, this is attributed to the presence of more trap states when
6T
attaches to TiO
2
and modifies the surface, mainly affecting the fill factor. Overall, these dyes introduce a new and effective design concept for liquid-electrolyte DSSC sensitisers.
Easily synthesized 'donor-free' dyes work as efficient sensitisers for dye-sensitised solar cells.</description><identifier>ISSN: 2050-7488</identifier><identifier>EISSN: 2050-7496</identifier><identifier>DOI: 10.1039/c5ta09133k</identifier><language>eng</language><subject>Agglomeration ; Dyes ; Electrolytes ; Energy conversion efficiency ; Photovoltaic cells ; Solar cells ; Titanium dioxide ; Volatile organic compounds</subject><ispartof>Journal of materials chemistry. A, Materials for energy and sustainability, 2016-01, Vol.4 (7), p.259-2516</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c458t-e65ea012bddfe2224707ce5d65235d35235dcd7a51fb162f096fe895a20d18273</citedby><cites>FETCH-LOGICAL-c458t-e65ea012bddfe2224707ce5d65235d35235dcd7a51fb162f096fe895a20d18273</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27903,27904</link.rule.ids></links><search><creatorcontrib>Hu, Yue</creatorcontrib><creatorcontrib>Ivaturi, Aruna</creatorcontrib><creatorcontrib>Planells, Miquel</creatorcontrib><creatorcontrib>Boldrini, Chiara L</creatorcontrib><creatorcontrib>Biroli, Alessio Orbelli</creatorcontrib><creatorcontrib>Robertson, Neil</creatorcontrib><title>'Donor-free' oligo(3-hexylthiophene) dyes for efficient dye-sensitized solar cells</title><title>Journal of materials chemistry. A, Materials for energy and sustainability</title><description>The common trend in designing dyes for use in DSSCs with iodide-based electrolyte is based on a donor-π spacer-acceptor (D-π-A) architecture. Here, we report two 'donor-free' cyanoacrylic end-functionalized oligo(3-hexylthiophene) dyes (
5T
and
6T
). Despite having no donor group, both dyes show reversible first oxidation process. Both
5T
and
6T
have
n
-hexyl alkyl chains to retard aggregation at different positions as well as different numbers of thiophene moieties. However, the dyes showed similar absorption properties and redox potentials. The DSSCs based on these dyes give power conversion efficiencies of more than 7%, although a significant difference in the
V
OC
and FF has been observed. Using electrochemical impedance spectroscopy, this is attributed to the presence of more trap states when
6T
attaches to TiO
2
and modifies the surface, mainly affecting the fill factor. Overall, these dyes introduce a new and effective design concept for liquid-electrolyte DSSC sensitisers.
Easily synthesized 'donor-free' dyes work as efficient sensitisers for dye-sensitised solar cells.</description><subject>Agglomeration</subject><subject>Dyes</subject><subject>Electrolytes</subject><subject>Energy conversion efficiency</subject><subject>Photovoltaic cells</subject><subject>Solar cells</subject><subject>Titanium dioxide</subject><subject>Volatile organic compounds</subject><issn>2050-7488</issn><issn>2050-7496</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNqFkU1LAzEQhoMoWKoX78LeWoXVSdJsdo-lfmJBkHpe0mRio9tNTbZg_fXutlKPzmFmGB7m4x1CzihcUeDFtRaNgoJy_nFAegwEpHJUZIf7PM-PyWmM79BaDpAVRY-8DG587UNqA-Ig8ZV780OeLvBrUzUL51cLrPEiMRuMifUhQWuddlg3XSmNWEfXuG80SfSVConGqoon5MiqKuLpb-yT17vb2eQhnT7fP07G01SPRN6kmAlUQNncGIuMsZEEqVGYTDAuDN96baQS1M5pxiwUmcW8EIqBoTmTvE-Gu76r4D_XGJty6WK3garRr2NJ2xtHUkLO_kelzNq5wDr0cofq4GMMaMtVcEsVNiWFspO5nIjZeCvzUwuf7-AQ9Z77ewP_AbIceFs</recordid><startdate>20160101</startdate><enddate>20160101</enddate><creator>Hu, Yue</creator><creator>Ivaturi, Aruna</creator><creator>Planells, Miquel</creator><creator>Boldrini, Chiara L</creator><creator>Biroli, Alessio Orbelli</creator><creator>Robertson, Neil</creator><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>7U6</scope><scope>C1K</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20160101</creationdate><title>'Donor-free' oligo(3-hexylthiophene) dyes for efficient dye-sensitized solar cells</title><author>Hu, Yue ; Ivaturi, Aruna ; Planells, Miquel ; Boldrini, Chiara L ; Biroli, Alessio Orbelli ; Robertson, Neil</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c458t-e65ea012bddfe2224707ce5d65235d35235dcd7a51fb162f096fe895a20d18273</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Agglomeration</topic><topic>Dyes</topic><topic>Electrolytes</topic><topic>Energy conversion efficiency</topic><topic>Photovoltaic cells</topic><topic>Solar cells</topic><topic>Titanium dioxide</topic><topic>Volatile organic compounds</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hu, Yue</creatorcontrib><creatorcontrib>Ivaturi, Aruna</creatorcontrib><creatorcontrib>Planells, Miquel</creatorcontrib><creatorcontrib>Boldrini, Chiara L</creatorcontrib><creatorcontrib>Biroli, Alessio Orbelli</creatorcontrib><creatorcontrib>Robertson, Neil</creatorcontrib><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Sustainability Science Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of materials chemistry. A, Materials for energy and sustainability</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hu, Yue</au><au>Ivaturi, Aruna</au><au>Planells, Miquel</au><au>Boldrini, Chiara L</au><au>Biroli, Alessio Orbelli</au><au>Robertson, Neil</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>'Donor-free' oligo(3-hexylthiophene) dyes for efficient dye-sensitized solar cells</atitle><jtitle>Journal of materials chemistry. A, Materials for energy and sustainability</jtitle><date>2016-01-01</date><risdate>2016</risdate><volume>4</volume><issue>7</issue><spage>259</spage><epage>2516</epage><pages>259-2516</pages><issn>2050-7488</issn><eissn>2050-7496</eissn><abstract>The common trend in designing dyes for use in DSSCs with iodide-based electrolyte is based on a donor-π spacer-acceptor (D-π-A) architecture. Here, we report two 'donor-free' cyanoacrylic end-functionalized oligo(3-hexylthiophene) dyes (
5T
and
6T
). Despite having no donor group, both dyes show reversible first oxidation process. Both
5T
and
6T
have
n
-hexyl alkyl chains to retard aggregation at different positions as well as different numbers of thiophene moieties. However, the dyes showed similar absorption properties and redox potentials. The DSSCs based on these dyes give power conversion efficiencies of more than 7%, although a significant difference in the
V
OC
and FF has been observed. Using electrochemical impedance spectroscopy, this is attributed to the presence of more trap states when
6T
attaches to TiO
2
and modifies the surface, mainly affecting the fill factor. Overall, these dyes introduce a new and effective design concept for liquid-electrolyte DSSC sensitisers.
Easily synthesized 'donor-free' dyes work as efficient sensitisers for dye-sensitised solar cells.</abstract><doi>10.1039/c5ta09133k</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 2050-7488 |
| ispartof | Journal of materials chemistry. A, Materials for energy and sustainability, 2016-01, Vol.4 (7), p.259-2516 |
| issn | 2050-7488 2050-7496 |
| language | eng |
| recordid | cdi_rsc_primary_c5ta09133k |
| source | Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection |
| subjects | Agglomeration Dyes Electrolytes Energy conversion efficiency Photovoltaic cells Solar cells Titanium dioxide Volatile organic compounds |
| title | 'Donor-free' oligo(3-hexylthiophene) dyes for efficient dye-sensitized solar cells |
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