Title :
The pressure wave propagation method for the study of interface electric field
Author :
Salame, Basil ; Hole, Stephane
Author_Institution :
Lab. de Phys. et d´Etude des Mater., UPMC Univ. Paris 06, Paris, France
Abstract :
The spatial resolution of the measurement methods used to estimate the microscopic distribution of charges in insulating materials is not sufficient to study the distribution at the interface of metals and semi-conductors. In this paper it is experimentally shown that applying the Pressure Wave Propagation (PWP) method to an aluminum sample generates a signal corresponding to the charges distribution at the interface. This result is attributed to the difference between mechanical and/or electrical properties of the coupled materials that causes a non-symmetrical response of the charges on each side of the interface. Other results with different metal and silica samples show the influence of the metal work function.
Keywords :
semiconductor-metal boundaries; wave propagation; work function; electrical properties; insulating materials; interface electric field; measurement methods; mechanical properties; metal work function; metal-semiconductor interface; microscopic charge distribution; nonsymmetrical charge response; pressure wave propagation method; spatial resolution; Aluminum; Charge measurement; Electric fields; Electrodes; Semiconductor device measurement; Silicon compounds; conductor; electric-field; electro-mechanical coupling; interface; non-destructive testing;
Conference_Titel :
Electrical Insulation Conference (EIC), 2015 IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4799-7352-1
DOI :
10.1109/ICACACT.2014.7223595
