Fig. 4
From: CsPbBr3/graphene nanowall artificial optoelectronic synapses for controllable perceptual learning
Controllable photoresponsive characteristics of the GNWs/CsPbBr3 QD artificial optoelectronic synapse under pulsed laser train stimuli. a The photocurrent response curve of the device illuminated by two 450 nm laser pulses (1.90 W/cm2, pulse width: 0.5 s, pulse interval: 0.5 s). b The photocurrent response curve of the device illuminated by two 530 nm laser pulses (1.90 W/cm2, pulse width: 0.5 s, pulse interval: 0.5 s). c The variation of paired-pulse facilitation index with the interval of laser pulse pairs. The pulse frequency is 1 Hz. d, e Controllable photocurrent response induced by increasing the pulse number and frequency of 1.90 W/cm2 530 nm pulsed laser stimulation