We have synthesized and characterized two new carbazole-based conjugated polymers, PCDCN and PCDTA, incorporating two strong light-absorbing organic dyes. These polymers exhibit relatively low band gaps (∼1.5 eV) and broad absorption ranges (from 300 to 700 nm). We fabricated polymer solar cells incorporating these polymers as donors and [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) as the acceptor. At a blending ratio of 1:4, we obtained power conversion efficiencies, under simulated AM 1.5 (100 mW/cm2) conditions, of 2.31% and 2.47% for the PCDCN- and PCDTA-based devices, respectively.
|Number of pages||9|
|Journal||Journal of Polymer Science, Part A: Polymer Chemistry|
|State||Published - 15 Nov 2010|
- conjugated polymers
- photovoltaic cells