Enhancement-mode InP MISFET's with anodic AI2Q3/ native oxide double-layer for gate insulator are fabricated by anodization processes in electrolyte and in oxygen plasma. Such gate structure greatly improves the device performance; high effective electron mobilities of 1500–3000 cm2/V. s and marked reduction of drain current instability were simultaneously achieved. This device performance is consistent with the interface properties obtained by C-V measurements, InP MISFET inverters as well as ring oscillators are also fabricated to demonstrate the stability of the circuit at low frequency and to show the capability of the process employed.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering