DC ELECTRIC-FIELD-INDUCED 2ND-HARMONIC GENERATION SPECTROSCOPY OF THESI(001)-SIO2 INTERFACE - SEPARATION OF THE BULK AND SURFACE NONLINEARCONTRIBUTIONS
Oa. Aktsipetrov et al., DC ELECTRIC-FIELD-INDUCED 2ND-HARMONIC GENERATION SPECTROSCOPY OF THESI(001)-SIO2 INTERFACE - SEPARATION OF THE BULK AND SURFACE NONLINEARCONTRIBUTIONS, Thin solid films, 294(1-2), 1997, pp. 231-234
D.c. electric field induced second-harmonic generation (SHG) spectrosc
opy of the Si(001)-SiO2 interface was studied both experimentally and
theoretically. To describe the experimental results the general phenom
enological model of d.c. induced SHG in centrosymmetric semiconductors
is developed, taking into account surface and bulk field dependent as
well as field independent contributions to the non-linear polarizatio
n. The solution of an inverse problem within this model of d.c. induce
d SHG allows all surface and bulk contributions to the non-linear resp
onse from an Si(001)-SiO2 interface to be distinguished.