Broadband Photodetector Based on In2S3/InAs/In2S3 Heterostructure for Artificial Vision

As biomimetic neuromorphic computing gains increasing research interest, optoelectronic synapses have emerged as particularly noteworthy due to their ability to perform in-sensor computations. This study presents an optoelectronic synapse array based on In2S3/InAs/In2S3 heterostructure, which can detect and respond across a wide spectral range from ultraviolet (UV) to near-infrared (NIR). These arrays replicate the functionality of biological photoreceptors, offering improved spectral sensitivity and selectivity, which are crucial for artificial vision applications. The In2S3/InAs/In2S3 heterostructure studied demonstrates wide spectral response, synaptic plasticity, low cost, and ease of array integration, highlighting its significant potential for applications in neuromorphic computing and biomimetic vision.