Neuromorphic optoelectronic devices based on metal halide perovskite

Neuromorphic electronics has received increased attention for their application in brain-inspired computing and artificial sensorimotor nerves. Metal halide perovskite (MHP) has been proved to be a candidate material for use in optoelectronic neuromorphic devices. Herein, we review on the recent research progress of MHP materials, with the focus on their applications in neuromorphic optoelectronics. First, we review on the MHP materials that are used for optoelectronic devices especially for neuromorphic applications, in the sequence of all-inorganic, organic-inorganic hybrid and lead-free MHP materials. Then, we summarize the design and fabrication of two-terminal (2-T) and three-terminal (3-T) synaptic devices, including working mechanisms as operated by electrical and light inputs, and the relationship between electrical properties with material composition and structure of functional layers. Finally, we review on the applications of these devices on pattern recognition, bionic vision, neuromorphic sensing and modulation, experience and associative learning, logic computing and high-pass filtering. This review aims could potentially inspire future research in the field of neuromorphic optoelectronic electronics.