Flat-band voltage and surface states in amorphous silicon-based alloy field-effect transistors

Abstract
We propose a new technique to determine both the flat-band voltage and the characteristic energy of the deep localized states in amorphous silicon-based alloy field-effect transistors from their current-voltage characteristics. We also analyze the effects of surface states and show that they become important when their density is greater than 1011 cm−2 eV−1.