Energy-resolved DLTS measurement of interface states in MIS structures

N. M. Johnson

Applied Physics Letters · 1979 · 101 citations · 8 references

Concepts

Abstract

A new method is described for determining the energy of emitting centers in an interface-state continuum independently of the emission rate in transient-capacitance measurements on MIS structures. Deep-level transient spectroscopy (DLTS) is performed in the double-correlation mode to analyze the energy profile of a continuous interface-trap distribution. With this method, DLTS can be used to evaluate interface-state distributions with energy-dependent capture cross sections, and the extraneous effects of bulk defect levels in the semiconductor are minimized. Experimental results are presented for electron traps at the Si-SiO2 interface.

References

8