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Journal Article
Light-Induced Radix Modulation and Optoelectronic Synaptic Properties in Ternary-Logic Devices
- Authors
- Chohyeon Park, Jung Wook Lim
- Issue Date
- 2025-06
- Citation
- Small Structures, v.6, no.6, pp.1-6
- ISSN
- 2688-4062
- Publisher
- John Wiley & Sons
- Language
- English
- Type
- Journal Article
- Abstract
- Multivalued logic (MVL) devices overcome the limitations of binary computing. However, their complex structures and complementary metal–oxide semiconductor (CMOS) incompatibility pose considerable challenges. Herein, a streamlined MVL device has been developed using a transistor with an oxide channel and dual-gate dielectric, eliminating the need for a barrier junction in the channel layer. This new device supports three logic states (OFF, intermediate, and ON) through Fowler–Nordheim tunneling between the gate and source. It exhibits optoelectronic synaptic properties by leveraging the photoresponse of its constituent TiO
2 channel and charge trapping at the gate dielectric/channel interface, achieving optical potentiation of 128 multistates with a linearity of 0.94. Additionally, the device can switch between ternary and binary-logic states within a specific wavelength range. The proposed approach is a practical solution to integrating logic state switching and synaptic functions in a single device, with potential application in advanced semiconductor technologies.
- KSP Keywords
- Channel layer, Charge trapping, Complex structure, Light-induced, Oxide channel, Potential applications, Single device, State switching, Synaptic functions, Wavelength range, dual gate(DG)
This work is distributed under the term of Creative Commons License (CCL)
(CC BY)
(CC BY)
