Universal formation of compositionally graded bulk heterojunction for efficiency enhancement in organic photovoltaics.
basic_science · Level V
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- Record sourced from PubMed, PMID 24615999.
- Also identified by DOI 10.1002/adma.201305196.
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Abstract
A universal method is reported to form graded bulk heterojunction (BHJ) organic photovoltaic devices (OPVs) by a simple solvent-fluxing process. Donors are enriched at the anode and acceptors are enriched at cathode side, matching the gradient electron and hole current across the film. Efficiency enhancements by 15-50% are achieved for all BHJ systems tested compared with the optimized regular BHJ OPVs.