High levels of alkali-metal storage in thin films of hexa-peri-hexabenzocoronene

M. Keil, P. Samorí, D. A. Dos Santos, J. Birgerson, R. Friedlein*, A. Dkhissi, M. Watson, K. Müllen, Jean-Luc Bredas, J. P. Rabe, W. R. Salaneck

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

The results of the doping of molecular solid films of the medium-sized aromatic hydrocarbon hexa-peri-hexabenzocoronene (HBC), using lithium or sodium atoms were presented. The evolution of the valence band electronic structure was monitored by x-ray photoelectron spectroscopy and studied by ultraviolet photoelectron spectroscopy. Results indicated that n-doping depended on the type of alkali-metal atom employed and on the molecular order of the film. The smaller Li ion was found to have a stronger influence on the electronic structure than Na ions. These results revealed the potential use of the graphene materials in lithium-ion batteries with a high charge-storage capacity.

Original languageEnglish (US)
Pages (from-to)10854-10860
Number of pages7
JournalJournal of Chemical Physics
Volume116
Issue number24
DOIs
StatePublished - Jun 22 2002

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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