Fig. 2: Photoconductivity properties of volitional neuromorphic devices.
From: Sub-picojoule-per-bit volitional neuromorphic devices for precise targeting and tracking
a Logarithmic I–V curves measured in dark and under illumination of primary colors with the same intensity of 0.1 mW/cm2. Cumulative b positive and c negative photoconductivity measurements with progressive multilevel states. The pulse width and interval of incident light are programmed as 200 ms and 10 s, respectively. d Photocurrent mapping as a function of gate voltage within the spectrum ranging from 450 to 800 nm. The gate voltage ranges from −40 to 40 V with a step size of 2 V and a bias voltage of 1 V. e The histogram of the optimal gate voltage corresponding to the minimum differential photoresponse. Each color represents its corresponding wavelength.
