On the correlation between surface roughness and inversion layer mobility in Si-MOSFET's

Citation
A. Pirovano et al., On the correlation between surface roughness and inversion layer mobility in Si-MOSFET's, IEEE ELEC D, 21(1), 2000, pp. 34-36
Citations number
15
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
IEEE ELECTRON DEVICE LETTERS
ISSN journal
07413106 → ACNP
Volume
21
Issue
1
Year of publication
2000
Pages
34 - 36
Database
ISI
SICI code
0741-3106(200001)21:1<34:OTCBSR>2.0.ZU;2-M
Abstract
A. quantitative analysis of the Si/SiO2 interface roughness based on atomic force microscope (AFM) and mobility measurements is presented. Our results show that the spatial components of the roughness affecting the carrier tr ansport lie outside the range probed by AFM, thus making questionable the v alidity of previously published correlations between AFM measurements and c arrier mobility, Based on a numerical model of the roughness scattering, a new physically-based correlation is proposed, highlighting the impact, so f ar overlooked, of the roughness correlation length an the carrier mobility.