| Autor: |
Fallon, Kealan J., Wijeyasinghe, Nilushi, Manley, Eric F., Dimitrov, Stoichko D., Yousaf, Syeda A., Ashraf, Raja S., Duffy, Warren, Guilbert, Anne A. Y., Freeman, David M. E., Al-Hashimi, Mohammed, Nelson, Jenny, Durrant, James R., Chen, Lin X., McCulloch, Iain, Marks, Tobin J., Clarke, Tracey M., Anthopoulos, Thomas D., Bronstein, Hugo |
| Zdroj: |
Chemistry of Materials; 20240101, Issue: Preprints |
| Abstrakt: |
Herein, we present the synthesis and characterization of four conjugated polymers containing a novel chromophore for organic electronics based on an indigoid structure. These polymers exhibit extremely small band gaps of ∼1.2 eV, impressive crystallinity, and extremely high n-type mobility exceeding 3 cm2V s–1. The n-type charge carrier mobility can be correlated with the remarkably high crystallinity along the polymer backbone having a correlation length in excess of 20 nm. Theoretical analysis reveals that the novel polymers have highly rigid nonplanar geometries demonstrating that backbone planarity is not a prerequisite for either narrow band gap materials or ultrahigh mobilities. Furthermore, the variation in backbone crystallinity is dependent on the choice of comonomer. OPV device efficiencies up to 4.1% and charge photogeneration up to 1000 nm are demonstrated, highlighting the potential of this novel chromophore class in high-performance organic electronics. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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