Negative electron affinity of adamantane on Cu(111). (25th January 2021)

• Record Type: Journal Article
• Authors: Li, Jieru; Niesner, Daniel; Fauster, Thomas
• Is Part Of: Journal of physics. Volume 33:Number 13(2021)
• Publication Date: 2021-01-25
• Subjects: electron affinity -- adamantane -- photoemission spectroscopy; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/abd99a
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: Photoelectron spectroscopy is used to show that thick adamantane films on Cu(111) have a negative electron affinity of −0.3 ± 0.1 eV. The ionization potential is obtained as 8.55 ± 0.15 eV resulting in a band gap of 8.9 ± 0.1 eV. For films of about 1.4 monolayer thickness the electron affinity is close to zero and the valence bands are shifted toward the Fermi energy due to charge transfer from Cu 3d bands.