More Than a Device: Function Implementation in a Multi-Gate Junctionless FET Structure

Abstract

The miniaturization of transistor sizes to keep up with Moore's Law in Integrated Circuits (ICs) is rapidly approaching physical limits. To extend Moore's Law, single-device-based computing shows promise by achieving more functionality in a smaller footprint. However, existing approaches either embed only primitive logic, leading to inefficient performance, or rely on exotic devices that require costly non-conventional fabrication. Previously, we introduced Crosstalk Computing, which leverages deterministic signal interference between nano-metal lines for logic computation. This paper elaborates on realizing complex Boolean functions through TCAD-based modeling and simulations, using a multi-gate Junctionless FET-based device with independent gates. We demonstrate the implementation of various complex logic functions alongside primitive gates, achieving an average of 8× density improvement and 8× lower power consumption compared to CMOS-based implementations. Delay characteristics are comparable to 14 nm PTM counterparts. This standalone device approach is compatible with existing fabrication processes.