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A New Dithienylbenzotriazole-Based Poly(2,7-carbazole) for Efficient Photovoltaics

✍ Scribed by Bo Peng; Ahmed Najari; Bo Liu; Philippe Berrouard; David Gendron; Yuehui He; Kechao Zhou; Yingping Zou; Mario Leclerc

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
497 KB
Volume
211
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

A new dithienyl benzotriazole‐based conjugated polymer was synthesized by Suzuki coupling reaction. The polymer was found to be soluble in common organic solvents, such as chloroform, tetrahydrofuran and chlorobenzene, with excellent film‐forming properties. The structure of the polymer was confirmed by ^1^H NMR, the molecular weights determined by GPC and the thermal properties investigated by TGA and DSC. The polymer films exhibited an absorption band in the wavelength range 300 to 610 nm. Preliminary photovoltaic cells based on the composite structure of indium tin oxide (ITO)/PEDOT:PSS/PCDTBTz:PC~60~BM (1:2 w/w)/Al showed an open‐circuit voltage of 0.92 V, a power conversion efficiency of 2.2% and a short circuit current of 5.33 mA cm^−2^.

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