Abstract

This paper presents fabrication of multi-state inverters incorporating SiOx-cladded Si quantum dot in the channel and gate region of driver, load, and access transistors. Experimental characteristics are presented exhibiting 3-state behavior in Quantum-dot Channel (QDC)-Quantum-dot Gate (QDG) FETs having Si quantum dots. It is shown that QDC-QDG-FETs-based enhancement mode inverter configurations are the building blocks of a multi-bit static random access memory (SRAM). QDC-QDG-FETs exhibiting four states can also be used to implement compact 4-state logic and nonvolatile memories or random access nonvolatile memories.

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