title: Comparison between transient and frequency modulated excitation: application to silicon nitride and aluminum oxide coatings of silicon.
abstract: Contactless measurements of the lifetime of charge carriers are presented with varying ways of photo excitation: with and without bias light and pulsed and frequency modulated. These methods are applied to the study of the surface passivation of single crystalline silicon by a-SiN(x):H and Al2O3 coatings. The properties of these coatings are investigated under consideration of the merits of the different methods.
authors.affiliation: Helmholtz-Zentrum Berlin für Materialien und Energie, Institute Solar Fuels (E-IF), Hahn-Meitner-Platz 1, D-14109 Berlin, Germany.
authors.forename: D
authors.initials: D
authors.lastname: Klein
authors.affiliation: Helmholtz-Zentrum Berlin für Materialien und Energie, Institut für Heterogene Materialsysteme (E-IH), Hahn-Meitner-Platz 1, D-14109 Berlin, Germany.
authors.forename: W
authors.initials: W
authors.lastname: Ohm
authors.affiliation: Helmholtz-Zentrum Berlin für Materialien und Energie, Institut für Heterogene Materialsysteme (E-IH), Hahn-Meitner-Platz 1, D-14109 Berlin, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Fengler
authors.affiliation: Helmholtz-Zentrum Berlin für Materialien und Energie, Institute Solar Fuels (E-IF), Hahn-Meitner-Platz 1, D-14109 Berlin, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Kunst