Efficient all-polymer solar cells based on blend of tris(thienylenevinylene)-substituted polythiophene and poly[perylene diimide-alt-bis(dithienothiophene)]

Zhan'ao Tan; Erjun Zhou; Xiaowei Zhan; Xiang Wang; Yongfang Li; Stephen Barlow; Marder, Seth R.
August 2008
Applied Physics Letters;8/18/2008, Vol. 93 Issue 7, p073309
Academic Journal
A narrow band-gap alternating copolymer of perylene diimide and bis(dithienothiophene) (2) and a polythiophene derivative substituted by a tris(thienylenevinylene) conjugated side chain (4) are used as acceptor and donor, respectively, in all-polymer solar cells (SCs). The optimized device based on the blend of 4 and 2 in the ratio 3:1 (w/w) gives a short circuit current (Jsc) of 5.02 mA cm-2 and a power conversion efficiency of 1.48%, under simulated AM 1.5 illumination at 100 mW cm-2. These values are among the highest values reported for all-polymer SCs.


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