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- W2804643078 endingPage "1703551" @default.
- W2804643078 startingPage "1703551" @default.
- W2804643078 abstract "2017 saw the publication of several new material systems that challenge the long-held notion that a driving force is necessary for efficient exciton dissociation in organic photovoltaics (OPVs) and that a loss of ≈0.6 eV between the energy of the charge transfer state E ct and the energy corresponding to open circuit is general. In light of these developments, the authors combine insights from device physics and spectroscopy to review the two key tradeoffs limiting OPV performances. These are the tradeoff between the charge carrier generation efficiency and the achievable open circuit voltage (V oc ) and the tradeoff between device thickness (light absorption) and fill factor. The emergence of several competitive nonfullerene acceptors (NFAs) is exciting for both of these. The authors analyze what makes these materials compare favorably to fullerenes, including the potential role of molecular vibrations, and discuss both design criteria for new molecules and the achievable power conversion efficiencies." @default.
- W2804643078 created "2018-06-01" @default.
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- W2804643078 date "2018-05-17" @default.
- W2804643078 modified "2023-10-03" @default.
- W2804643078 title "Key Tradeoffs Limiting the Performance of Organic Photovoltaics" @default.
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