Patent · US Active

Photonic synapse based on graphene-perovskite quantum dot for neuromorphic computing

US11574177B2 · kind B2 · utility

1Cited by

0References

20Claims

0Family size

Inventors

Jayan Thomas · Orlando, US
Tania Roy · Orlando, US
Sonali Das · Orlando, US
Basudev Pradhan · Sherghati, IN
Jinxin Li · Orlando, US

Key dates

Filing date	Sep 14, 2020
Grant date	Feb 7, 2023
Priority date	—
Expiry date	Oct 23, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH10K85/50
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A phototransistor device to act as an artificial photonic synapse includes a substrate and a graphene source-drain channel patterned on the substrate. A perovskite quantum dot layer is formed on the graphene source-drain channel. The perovskite quantum dot layer is methylammonium lead bromide material. A method of operating the phototransistor device as an artificial photonic synapse includes applying a first fixed voltage to a gate of the phototransistor and a second fixed voltage across the graphene source-drain channel. A presynaptic signal is applied as stimuli across the graphene source-drain channel. The presynaptic signal includes one or more pulses of light or electrical voltage. A current across the graphene source-drain channel is measured to represent a postsynaptic signal.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.