Design of New Piezoelectronic Transistors and Their Ultralow-Voltage SRAM Application

Design methodologies of new piezoelectronic transistors (PETs) are developed, which satisfy a desired on-current at an ultralow-voltage (e.g. 0.2 V) or a desired off-current in the shutdown state. Both the designs can keep their on-current density to satisfy a value requested from reliability. Ultralow-voltage SRAM applications of PETs designed for desired on- and off-currents are also demonstrated. Circuit performances of these SRAMs are computationally analyzed using our developed equivalent circuit of PETs. The ultralow-voltage SRAMs exhibit not only ultralow-power but also highspeed performances even at 0.2 V.