Complementary Logic with Voltage Zero-Loss and Nano-Watt Power via Configurable MoS_2/WSe_2 Gate

摘要

Due to the development of 2D material transistors research and preparation process, many fundamental logic units, like inverter and NAND gate, have been achieved to promote large-scale integration. However, there are critical challenges like voltage loss and large dynamic power consumption for integrated circuits based on 2D semiconductors. Here high-performance logic devices via different MoS2-WSe2 configurations, a MoS2-WSe2 complementary logic transmission gate with the ability to transport electrical level without any voltage loss and a MoS2-WSe2 complementary logic inverter with small dynamic power consumption and maximum voltage gain of 18 are demonstrated. Furthermore, an essential logic unit like Schmidt flip-flop is put forward by combining MoS2-WSe2 inverter and graphene floating gate. The realization of various logics achieved by different MoS2-WSe2 configurations makes it much easier to fabricate multifunctional system on a chip, which has a significant meaning for the development of high density integrated circuits.