title: Imaging photoelectron transmission through self-assembled monolayers: the work-function of alkanethiols coated gold.
abstract: In this paper, we present a new approach for studying the electronic properties of self-assembled monolayers and their interaction with a conductive substrate, the low-energy photoelectron imaging spectroscopy (LEPIS). LEPIS relies on imaging of photoelectrons ejected from a conductive substrate and subsequently transmitted through organic monolayers. Using this method, we measure the relative work-function of alkanethiols of different length on gold substrate, and we are able to follow the changes occurring when the surface coverage is varied. We also computed the work-function of model alkanethiols using a plane-wave density functional theory approach, in order to demonstrate the correlation between changes in the work-function with the monolayer organization and density.
authors: Institute of Electronic Structure and Laser (FORTH) and Department of Chemistry, University of Crete, 71110 Heraklion-Crete, Greece.
authors: Despina
authors: D
authors: Fragouli
authors: Theofanis N
authors: TN
authors: Kitsopoulos
authors: Letizia
authors: L
authors: Chiodo
authors: Fabio
authors: F
authors: Della Sala
authors: Roberto
authors: R
authors: Cingolani
authors: Supratim G
authors: SG
authors: Ray
authors: Ron
authors: R
authors: Naaman