DOI: 10.1002/marc.200600007. Linking Polythiophene Chains Through Conjugated Bridges: A Way to Improve Charge Transport in Polymer Solar Cells

Linking Polythiophene Chains Through Conjugated Bridges: A Way to Improve Charge Transport in Polymer Solar Cells

10.1002/marc.200600007

Crossref journal-article

Wiley

Macromolecular Rapid Communications (311)

Abstract

AbstractSummary: A series of cross‐linked polythiophene derivatives (P1–4) are synthesized by adding different ratio (0, 2, 5, and 10%) of conjugated cross‐linker via a Stille coupling reaction. From P1–4, with the increase of the content of the conjugated bridges, the UV‐visible absorption peaks of the polymers were shifted towards blue and their electrochemical bandgap increased. The hole mobilities of P1–4 as determined from the SCLC model are 5.23 × 10−6, 1.28 × 10−4, 7.01 × 10−3, and 2.34 × 10−5 cm2 · V−1 · s−1, respectively. The PCEs of the polymer solar cells based on P1–4 are 0.37, 1.05, 1.26, and 0.78%, respectively. The improvement of PCE of the devices based on P2–4 compared with that of P1 may be due to the increase of hole mobility.Molecular structure of the polythiophene derivatives (P1–4).magnified imageMolecular structure of the polythiophene derivatives (P1–4).

Bibliography

Zhou, E., Tan, Z., Yang, C., & Li, Y. (2006). Linking Polythiophene Chains Through Conjugated Bridges: A Way to Improve Charge Transport in Polymer Solar Cells. Macromolecular Rapid Communications, 27(10), 793â798. Portico.

Authors 4

Erjun Zhou (first)
Zhan'ao Tan (additional)
Chunhe Yang (additional)
Yongfang Li (additional)

References 36 Referenced 58

Dates

Type	When
Created	19 years, 4 months ago (April 27, 2006, 12:43 p.m.)
Deposited	1 year, 10 months ago (Oct. 9, 2023, 6:53 a.m.)
Indexed	11 months, 1 week ago (Sept. 20, 2024, 11:44 a.m.)
Issued	19 years, 4 months ago (April 27, 2006)
Published	19 years, 4 months ago (April 27, 2006)
Published Online	19 years, 4 months ago (April 27, 2006)
Published Print	19 years, 3 months ago (May 19, 2006)

Funders 0

None

BibTeX

@article{Zhou_2006, title={Linking Polythiophene Chains Through Conjugated Bridges: A Way to Improve Charge Transport in Polymer Solar Cells}, volume={27}, ISSN={1521-3927}, url={http://dx.doi.org/10.1002/marc.200600007}, DOI={10.1002/marc.200600007}, number={10}, journal={Macromolecular Rapid Communications}, publisher={Wiley}, author={Zhou, Erjun and Tan, Zhan’ao and Yang, Chunhe and Li, Yongfang}, year={2006}, month=apr, pages={793–798} }

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  "abstract": "<jats:title>Abstract</jats:title><jats:p><jats:bold>Summary:</jats:bold> A series of cross\u2010linked polythiophene derivatives (<jats:bold>P1</jats:bold>\u2013<jats:bold>4</jats:bold>) are synthesized by adding different ratio (0, 2, 5, and 10%) of conjugated cross\u2010linker via a Stille coupling reaction. From <jats:bold>P1</jats:bold>\u2013<jats:bold>4</jats:bold>, with the increase of the content of the conjugated bridges, the UV\u2010visible absorption peaks of the polymers were shifted towards blue and their electrochemical bandgap increased. The hole mobilities of <jats:bold>P1</jats:bold>\u2013<jats:bold>4</jats:bold> as determined from the SCLC model are 5.23\u2009\u00d7\u200910<jats:sup>\u22126</jats:sup>, 1.28\u2009\u00d7\u200910<jats:sup>\u22124</jats:sup>, 7.01\u2009\u00d7\u200910<jats:sup>\u22123</jats:sup>, and 2.34\u2009\u00d7\u200910<jats:sup>\u22125</jats:sup> cm<jats:sup>2</jats:sup>\u2009\u00b7\u2009V<jats:sup>\u22121</jats:sup>\u2009\u00b7\u2009s<jats:sup>\u22121</jats:sup>, respectively. The PCEs of the polymer solar cells based on <jats:bold>P1</jats:bold>\u2013<jats:bold>4</jats:bold> are 0.37, 1.05, 1.26, and 0.78%, respectively. The improvement of PCE of the devices based on <jats:bold>P2</jats:bold>\u2013<jats:bold>4</jats:bold> compared with that of <jats:bold>P1</jats:bold> may be due to the increase of hole mobility.</jats:p><jats:p><jats:boxed-text content-type=\"graphic\" position=\"anchor\"><jats:caption><jats:p>Molecular structure of the polythiophene derivatives (<jats:bold>P1</jats:bold>\u2013<jats:bold>4</jats:bold>).</jats:p></jats:caption><jats:graphic xmlns:xlink=\"http://www.w3.org/1999/xlink\" mimetype=\"image/gif\" position=\"anchor\" specific-use=\"enlarged-web-image\" xlink:href=\"graphic/mgra001.gif\"><jats:alt-text>magnified image</jats:alt-text><jats:caption><jats:p>Molecular structure of the polythiophene derivatives (<jats:bold>P1</jats:bold>\u2013<jats:bold>4</jats:bold>).</jats:p></jats:caption></jats:graphic></jats:boxed-text>\n</jats:p>",
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