A low band gap co-polymer of dithienogermole and 2,1,3-benzothiadiazole by Suzuki polycondensation and its application in transistor and photovoltaic cells

Zhuping Fei; Jong Soo Kym; Jeremy Smith; Ester Buchaca Domingo; Thomas D. Anthopoulos; Natalie Stingelin; Scott E. Watkins; Ji Seon Kim; Martin Heeney

doi:10.1039/c1jm13628c

A low band gap co-polymer of dithienogermole and 2,1,3-benzothiadiazole by Suzuki polycondensation and its application in transistor and photovoltaic cells

Zhuping Fei, Jong Soo Kym, Jeremy Smith, Ester Buchaca Domingo, Thomas D. Anthopoulos, Natalie Stingelin, Scott E. Watkins, Ji Seon Kim, Martin Heeney

Research output: Contribution to journal › Article › peer-review

89 Scopus citations

Abstract

We report the preparation of a 4,4′-bis(2-ethylhexyl)dithieno[3,2-b: 2′,3′-d]germole monomer and its polymerisation with 2,1,3-benzothiadiazole. Unlike the analogous dithienosilole, the dithienogermole is sufficiently stable under basic conditions to enable Suzuki polycondensation. The resulting high molecular weight polymer exhibits a high propensity to order in the solid state and demonstrates charge carrier mobilities up to 0.11 cm2 V-1 s-1 in field effect transistors. A PGeBTBT based BHJ solar cell device achieved a PCE of 4.5% with a high Jsc of 18.6 mA cm-2. © 2011 The Royal Society of Chemistry.

Original language	English (US)
Pages (from-to)	16257-16263
Number of pages	7
Journal	Journal of Materials Chemistry
Volume	21
Issue number	40
DOIs	https://doi.org/10.1039/c1jm13628c
State	Published - Oct 28 2011
Externally published	Yes

ASJC Scopus subject areas

Materials Chemistry
General Chemistry

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10.1039/c1jm13628c

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Fei, Z., Kym, J. S., Smith, J., Domingo, E. B., Anthopoulos, T. D., Stingelin, N., Watkins, S. E., Kim, J. S., & Heeney, M. (2011). A low band gap co-polymer of dithienogermole and 2,1,3-benzothiadiazole by Suzuki polycondensation and its application in transistor and photovoltaic cells. Journal of Materials Chemistry, 21(40), 16257-16263. https://doi.org/10.1039/c1jm13628c

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abstract = "We report the preparation of a 4,4′-bis(2-ethylhexyl)dithieno[3,2-b: 2′,3′-d]germole monomer and its polymerisation with 2,1,3-benzothiadiazole. Unlike the analogous dithienosilole, the dithienogermole is sufficiently stable under basic conditions to enable Suzuki polycondensation. The resulting high molecular weight polymer exhibits a high propensity to order in the solid state and demonstrates charge carrier mobilities up to 0.11 cm2 V-1 s-1 in field effect transistors. A PGeBTBT based BHJ solar cell device achieved a PCE of 4.5% with a high Jsc of 18.6 mA cm-2. {\textcopyright} 2011 The Royal Society of Chemistry.",

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AU - Fei, Zhuping

AU - Kym, Jong Soo

AU - Smith, Jeremy

AU - Domingo, Ester Buchaca

AU - Anthopoulos, Thomas D.

AU - Stingelin, Natalie

AU - Watkins, Scott E.

AU - Kim, Ji Seon

AU - Heeney, Martin

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AB - We report the preparation of a 4,4′-bis(2-ethylhexyl)dithieno[3,2-b: 2′,3′-d]germole monomer and its polymerisation with 2,1,3-benzothiadiazole. Unlike the analogous dithienosilole, the dithienogermole is sufficiently stable under basic conditions to enable Suzuki polycondensation. The resulting high molecular weight polymer exhibits a high propensity to order in the solid state and demonstrates charge carrier mobilities up to 0.11 cm2 V-1 s-1 in field effect transistors. A PGeBTBT based BHJ solar cell device achieved a PCE of 4.5% with a high Jsc of 18.6 mA cm-2. © 2011 The Royal Society of Chemistry.

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M3 - Article

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EP - 16263

JO - Journal of Materials Chemistry

JF - Journal of Materials Chemistry

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A low band gap co-polymer of dithienogermole and 2,1,3-benzothiadiazole by Suzuki polycondensation and its application in transistor and photovoltaic cells

Abstract

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