Nano Electronics and Optoelectronics Lab @ GIST
광주과학기술원 나노 전자/광전소자 연구실
RESEARCH AREA
1) Advanced Semiconductor Device Fabrication Technologies (차세대 반도체 소재 공정 기술 개발)
Two-dimensional (2D) materials, as a potential candidate for beyond Silicon, possess unique properties that are highly suitable for the development of next-generation electronic and optoelectronic applications. These unique characteristics include their high mechanical strength, high electron mobility, and tunable electronic band structure.
In our efforts to push the boundaries of semiconductor device fabrication, we intend to focuse of the following areas:
Development of dry/wet transfer technique for sub-micrometer scale alignment of van der Waals heterostructure
Fabrication of uniform/non-uniform strain platform to modulate the electrical/optical properties of 2D materials.
Highlighted Papers
Strain technique: Nature Communications 2021
Doping technique: ACS Nano 2015 | Advanced Functional Materials 2015
2) Next-generation AI semiconductor(Neuromorphics) devices (차세대 AI반도체/뉴로모픽 소자 개발)
2D van der Waals materials, through a combination of different materials and device scheme, have the potential to create next-generation functional devices that cannot be achieved through traditional semiconductor technologies.
Our group aims to implement the following next-generation electronic devices and integrated circuit designs:
Development of neuromorphic devices (synapse and neural devices) for building next-generation AI semiconductor platform.
Study on programmable reconfigurable logic device/circuit based on van der Waals platform.
Highlighted Papers
Conductive Bridge Memory: ACS AMI 2017
CBRAM-based Neuromorphic devices: Advanced Science 2019
3) Valleytronic Device for Optical Quantum Computing (광학 양자컴퓨터를 위한 밸리트로닉스 소자 개발)
Optical quantum computing is one of the next-generation computing technologies that utilizes optical information encoded in quantum states. In particular, recent developments have shown promise in the ability to generate, transmit, and detect the valley degree of freedom, which is a specific type of optical information.
Our group aims to implement the following photonic applications for building optical quantum computing:
Development of valleytronic devices by harnessing pseudo-magnetic fields in strained graphene.
Implementation of ultra-high-sensitive photodetectors (e.g., hybrid structure, avalanche photodetector) based on van der Waals heterostructure.
Highlighted Papers
Optical properties of pseudo-Landau-quantized Graphene: Nature Communications 2021
Photodetector enhanced by Hybrid structure: Advanced Materials 2016
Photodetector enhanced by Doping: Advanced Functional Materials 2015 | Advanced Science 2019