Photoactive devices including porphyrinoids with coordinating additives

摘要

Coordinating additives are included in porphyrinoid-based materials to promote intermolecular organization and improve one or more photoelectric characteristics of the materials. The coordinating additives are selected from fullerene compounds and organic compounds having free electron pairs. Combinations of different coordinating additives can be used to tailor the characteristic properties of such porphyrinoid-based materials, including porphyrin oligomers. Bidentate ligands are one type of coordinating additive that can form coordination bonds with a central metal ion of two different porphyrinoid compounds to promote porphyrinoid alignment and/or pi-stacking. The coordinating additives can shift the absorption spectrum of a photoactive material toward higher wavelengths, increase the external quantum efficiency of the material, or both.

主权项

1. An organic photoactive device, comprising:
a substrate; first and second electrodes supported by the substrate; and a donor material and an acceptor material arranged together to form a heterojunction between the first and second electrodes, wherein at least one of the donor or acceptor materials includes a metallated porphyrinoid and at least one coordinating additive.