Journal
MACROMOLECULES
Volume 45, Issue 15, Pages 5934-5940Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ma300839c
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Funding
- NSF [STC-MDITR DMR 0120967, DMR 1035196, EFRI-SEED 1038165, DMR 0747489]
- Emerging Frontiers & Multidisciplinary Activities
- Directorate For Engineering [1038165] Funding Source: National Science Foundation
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A series of donor-acceptor copolymers based on a new silafluorene containing multifused heptacylic arenes have been designed and synthesized in order to further modulate and optimize their electronic and optical properties. Polymer solar cells based on a blend of these polymers and PC61BM exhibited high open circuit voltages of up to 0.86 V. Through simple and straightforward engineering of molecular structures, the devices based on the PSiFDCTBT:PC61BM (1:3.5 in wt %) blend provided, on average, a V-oc of 0.86 V, a J(sc) of 8.8 mA/cm(2), a FF of 56%, delivering a PCE of 4.2%.
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