Electron-hole interaction energy in the organic molecular semiconductor PTCDA

C. I. Wu, Y. Hirose, H. Sirringhaus, Antoine Kahn

Research output: Contribution to journalArticlepeer-review

132 Scopus citations


We have used photoemission, inverse photoemission and electron energy loss spectroscopies to determine the on-site attractive electron-hole interaction energy Ee-h in the organic molecular semiconductor 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA). Ee-h is found to be 1.0 ± 0.2 eV, larger than the PTCDA band width estimated to be smaller than 0.4 eV. Correlation effects in PTCDA are therefore important, consistent with the molecular nature of the solid. They are smaller than in purely molecular solids like C60 due to the strong π-electron coupling between overlapping molecules in the molecular stacks.

Original languageEnglish (US)
Pages (from-to)43-47
Number of pages5
JournalChemical Physics Letters
Issue number1-2
StatePublished - Jun 20 1997

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry


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