Integration of synaptic phototransistors and quantum dot light-emitting diodes for visualization and recognition of UV patterns.

ABSTRACT: Synaptic photodetectors exhibit photon-triggered synaptic plasticity, which thus can improve the image recognition rate by enhancing the image contrast. However, still, the visualization and recognition of invisible ultraviolet (UV) patterns are challenging, owing to intense background noise. Here, inspired by all-or-none potentiation of synapse, we develop an integrated device of synaptic phototransistors (SPTrs) and quantum dot light-emitting diodes (QLEDs), facilitating noise reduction and visualization of UV patterns through on-device preprocessing. The SPTrs convert noisy UV inputs into a weighted photocurrent, which is applied to the QLEDs as a voltage input through an external current-voltage-converting circuit. The threshold switching characteristics of the QLEDs result in amplifie

SUBMITTER: Seung H 

PROVIDER: S-EPMC9555778 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature