Light induced photovoltaic and pyroelectric effects in ferroelectric BaTiO_(3) film based Schottky interface for self-powered and flexible multi-modal logic gates

Optoelectronic logic gates have emerged as one of the key candidates for the creation of next generation logic devices.However,current optoelectronic logic gates can provide only one or two logic gates,severely limiting their applica-tions.Here we report a self-powered and mechanically flexible device based on a BaTiO_(3) ferroelectric film to produce multi-modal logic gates.By exploiting the photo-induced photovoltaic and pyroelectric effects of a Schottky junction which is created between BaTiO_(3) and LaNiO_(3),the device is able to provide five different optoelectronic logic gates,which can be operated using input lasers of different wavelength(405 or 785 nm).The mode of operation of the logic gate can be switched by controlling the wavelength and intensity of the input laser,where the switching process is both lossless and reversible.A logic gate array was designed to conduct the five logic operations,with 100%accuracy,thereby providing application potential for the Internet of Things,big data,and secure solutions for data processing and transmission.

A multifunctional optical-thermal logic gate sensor array based on ferroelectric BiFeO_(3) thin films

The growing need to process a diverse range of data has ignited effort in developing new multifunctional logic gate devices.In this article,we report a new form of all-in-one logic gate system that exploits the photoresponsivity of a self-powered multifunctional BiFeO_(3)(BFO)sensor material.The BFO sensor can not only detect both light intensity and temperature,but it can also execute three common logic gates of“AND”,“OR”,and“NOT”by converting optical and thermal inputs into electrical output.The diverse functionality of the BFO logic gate sensor array utilizes the unique light-and temperaturecontrolled energy band structure and carrier behavior of the BFO material.To demonstrate the potential,a 3×3 logic gate sensor matrix is developed,which successfully detected light and temperature distributions,and accurately produced the three basic logic gate operations.This work provides a new route to construct highly integrated multifunctional electronic devices for the advancement of large sensing,communication,and computing operations.