Interfacial electronic structure of Na deposited on rubrene thin film studied by synchrotron radiation photoemission

Ching Hsuan Wei, Chiu Ping Cheng*, Hong-Cheu Lin, Tun Wen Pi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The electronic structure of rubrene doped with various concentrations of Na was studied by synchrotron-radiation photoemission. Three stages of development were found with increasing Na concentration; Na penetrating deep into the organic film, followed by development of gap states, and ended with a metallic Na film. The charge transfer from Na to rubrene resulted in a vacuum-level shift. By doping Na into rubrene, we could control the IP of the organic molecule, which is favorable for application in organic semiconductor devices.

Original languageEnglish
Pages (from-to)2255-2259
Number of pages5
JournalApplied Surface Science
Volume357
DOIs
StatePublished - 1 Dec 2015

Keywords

  • Rubrene
  • Sodium
  • Synchrotron radiation photoemission

Fingerprint Dive into the research topics of 'Interfacial electronic structure of Na deposited on rubrene thin film studied by synchrotron radiation photoemission'. Together they form a unique fingerprint.

Cite this