Dual-Modulated Vertically Stacked Transistors With Fully Laminated Plate-Type Architecture Featuring Nanoscale...

A transistor with fully laminated plate-type triode electrodes, source, drain and gate offers higher current density than a typical transistor design by allowing a 2D current path. Nanoscale transistors face challenges like off-state leakage, so we introduce a new design using a laminated plate-type architecture and a dual-modulation strategy to improve performance and stability. Both top and bottom gates are used as active electrodes to fully control the channel's thickness. A micro-hole patterned electrode is employed to enable effective gate field penetration into the channel, while a graphene electrode facilitates Fermi-level modulation and improves field transfer. Furthermore, a leakage blocking layer is inserted to suppress unwanted carrier injection in the source and drain overlap regions. The device achieves low off-state current of ≈10^-12 A and an on/off-current ratio exceeding 10⁶ at V_DS of 3 V. It also delivers high output currents under low-voltage operation (1 mA cm^-2 at 0.1 V and 50 mA cm^-2 at 1 V). Despite a nanoscale channel length, the device maintains near-zero V_TH. The fully encapsulated channel shows strong reliability against bias stress and light. This work shows that a laminated vertical design with dual-gate control effectively enhances the stability of nanoscale transistors, highlighting their potential for next-generation low-power logic, memory, and flexible electronics.