Enhancement of light-energy conversion efficiency by multi-porphyrin arrays of porphyrin-peptide oligomers with fullerene clusters.

摘要: Organic photovoltaic cells using supramolecular complexes of porphyrin−peptide oligomers (porphyrin-functionalized α-polypeptides) with fullerene demonstrate remarkable enhancement in the photoelectrochemical performance as well broader photoresponse visible and near-infrared regions by increasing number porphyrin units α-polypeptide structures. A high power conversion efficiency (η) 1.3% a maximum incident photon-to-photocurrent (IPCE) 42% were attained composite clusters octamer fullerene. These results clearly show that formation molecular assembly between multi-porphyrin arrays polypeptide backbone controls electron transfer complex, which is essential for light-energy conversion.