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)|
|Number of pages||7|
|Journal||Journal of Materials Chemistry|
|State||Published - Oct 28 2011|
Bibliographical noteGenerated from Scopus record by KAUST IRTS on 2023-02-14
ASJC Scopus subject areas
- Materials Chemistry