Supramolecular nanofibers paired with nanohole substrate improve exciton transport in organic solid

Researchers at Science Tokyo have demonstrated that self‑assembling, anthracene‑based supramolecular nanofibers can transport singlet excitons across distances of several hundred nanometres. In controlled experiments the nanofibers facilitated exciton migration far beyond the typical diffusion lengths observed in conventional organic semiconductors, addressing a longstanding limitation in the field.

When the nanofibers were integrated with a plasmonic gold nanohole substrate, the exciton diffusivity was reported to double, further enhancing charge‑carrier transport. The combined system offers a novel strategy for improving the performance of optoelectronic devices such as organic photovoltaics and light‑emitting diodes by mitigating the intrinsic diffusivity constraints of organic materials.