Dual-Mode Photonic Synapse Based on a Lead-Free 2D Ruddlesden-Popper Perovskite for Neuromorphic Vision.

ABSTRACT: Inspired by the human visual system, photonic synapses with photonic sensing and data memorization offer a promising alternative to traditional von Neumann architectures for neuromorphic computing. This study introduces a multifunctional artificial photonic synapse based on solution-processed PEA₂SnI₄ 2D Ruddlesden-Popper perovskite. By modulation of the applied bias voltage, the PEA₂SnI₄ device can switch between two distinct optoelectronic modes. In the absence of bias, the device operates in the photodetector mode, demonstrating a responsivity of 42.4 mA W^-1. The low dark current of the device allows for a high detectivity of 3.6 × 10¹⁴ Jones and a broad linear dynamic range of 140 dB. Under reverse bias, the device trans

SUBMITTER: Chen CY 

PROVIDER: S-EPMC12400261 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature