Photoemission spectroscopy investigation of magnesium-Alq3 interfaces

A. Rajagopal, A. Kahn

Research output: Contribution to journalArticle

178 Scopus citations

Abstract

The formation of interfaces between magnesium (Mg) and the organic molecular semiconductor tris(8-hydroxy-quinoline) aluminum (Alq3) is studied via ultraviolet photoemission spectroscopy. The morphology and electronic structure of Mg-on-Alq3 and Alq3-on-Mg interfaces are compared. The energy of the Alq3 molecular levels is determined in both cases with respect to a reference Fermi level as a function of interface formation. The difference in injection characteristics between the two interfaces is examined in terms of differences in interface morphology and of electronic gap states induced by the diffusion of Mg at the Mg/Alq3 interface.

Original languageEnglish (US)
Pages (from-to)355-358
Number of pages4
JournalJournal of Applied Physics
Volume84
Issue number1
DOIs
StatePublished - Jul 1 1998

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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