A fullerene-based organic exciton blocking layer with high electron conductivity.
basic_science · Level V
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- Record sourced from PubMed, PMID 23751049.
- Also identified by DOI 10.1021/nl401531t.
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Abstract
We demonstrate the concentration dependence of C60 absorption in solid solutions of C60 and bathocuprione (BCP), revealing a nonlinear decrease of the C60 charge transfer (CT) state absorption. These blends are utilized to study the photocurrent contribution of the CT in bilayer organic photovoltaics (OPVs); 1:1 blends produce 40% less photocurrent. As exciton blocking electron transporting layers, the blends achieve power conversion efficiencies of 5.3%, an increase of 10% compared to conventional buffers.