Surface Second Harmonic Studies of Si(111)/Electrolyte and Si(111)/SiO2/ Electrolyte Interfaces
Abstract
The optical second harmonic (SH) response from Si(111) electrode surfaces has been studied and has been found to be highly potential dependent. For both H-terminated Si(111) surfaces in NJ4F, and oxide covered surfaces biased in H2SO4, the phase and the amplitude display a potential dependence which we attribute to field effect within the semiconductor space-charge region and at the surface of the Si(111) electrode. The studies are the first to demonstrate that for Si(1110)/oxide samples the potential dependence in the SH phase can be correlated with oxide thickness as demonstrated by examining samples of 0-40 Angstrom thickness. Si(111)/Oxide electrodes, Electrochemistry
Document Details
- Document Type
- Technical Report
- Publication Date
- May 13, 1994
- Accession Number
- ADA279450
Entities
People
- Geraldine L. Richmond
- J. L. Daschbach
- P. R. Fischer
Organizations
- University of Oregon