Chiropto‐Neuromorphic Devices Based on a Photocatalytic Dye/Polymer Semiconductor Bulk Heterojunction for Circularly Polarized Light Detection and Memorization

Neuromorphic computing, which emulates the energy-efficient processing of the human brain, has emerged as a key technology for next-generation artificial intelligence. Integrating sensitivity to circularly polarized light (CPL) provides an additional degree of freedom for optical data encoding, yet practical implementation remains limited by material instability and complex, non-scalable fabrication. This work introduces a chiropto-neuromorphic device that addresses these challenges through a polarized light-induced charge transfer doping mechanism. The system employs a solution-processed bulk heterojunction (BHJ) composed of a chiral boron dipyrromethene (BODIPY) dye and a polymer semiconductor (PBTTT-C12) to translate CPL handedness into a stable nonvolatile memory state. Chirality-dependent charge transfer modulates the polymer's doping level, enabling precise control of synaptic weig…