Ambient effect on the electronic structures of tris-(8-hydroxyquinoline) aluminum films investigated by photoelectron spectroscopy

L. S. Liao; X. H. Sun; L. F. Cheng; N. B. Wong; C. S. Lee; S. T. Lee

doi:10.1016/S0009-2614(00)01360-9

Author(s)

L. S. Liao
X. H. Sun
L. F. Cheng
N. B. Wong
S. T. Lee

Related Research Unit(s)

Centre of Super-Diamond and Advanced Films

Detail(s)

Original language	English
Pages (from-to)	212-216
Journal / Publication	Chemical Physics Letters
Volume	333
Issue number	3-4
Publication status	Published - 12 Jan 2001

Link(s)

DOI	DOI https://doi.org/10.1016/S0009-2614(00)01360-9 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-0010058008&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(206b70e7-1e9d-4a9f-a705-b8f73427e3f0).html

Abstract

Thin films of tris-(8-hydroxyquinoline) aluminum (Alq₃) were exposed to trace amounts of O₂, CO₂, H₂O, or to ambient air. Evolution of electronic structures of Alq₃ films with increasing gas exposure was measured using ultraviolet photoelectron spectroscopy and X-ray photoelectron spectroscopy (XPS). The vacuum energy level, the highest occupied molecular orbital, and XPS core levels of the constituting elements in Alq₃ shifted according to the kind of gas exposure. Chemical reaction between oxygen and the Alq₃ films was observed upon oxygen exposure. Moreover, it was found that the dominant influence of ambient conditions on the electronic structures of the Alq₃ films was from H₂O. © 2001 Elsevier Science B.V.

Citation Format(s)

[ RIS ] [ BibTeX ]

Ambient effect on the electronic structures of tris-(8-hydroxyquinoline) aluminum films investigated by photoelectron spectroscopy. / Liao, L. S.; Sun, X. H.; Cheng, L. F. et al.
In: Chemical Physics Letters, Vol. 333, No. 3-4, 12.01.2001, p. 212-216.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Liao, LS, Sun, XH, Cheng, LF, Wong, NB, Lee, CS & Lee, ST 2001, 'Ambient effect on the electronic structures of tris-(8-hydroxyquinoline) aluminum films investigated by photoelectron spectroscopy', Chemical Physics Letters, vol. 333, no. 3-4, pp. 212-216. https://doi.org/10.1016/S0009-2614(00)01360-9

Liao, L. S., Sun, X. H., Cheng, L. F., Wong, N. B., Lee, C. S., & Lee, S. T. (2001). Ambient effect on the electronic structures of tris-(8-hydroxyquinoline) aluminum films investigated by photoelectron spectroscopy. Chemical Physics Letters, 333(3-4), 212-216. https://doi.org/10.1016/S0009-2614(00)01360-9

Liao LS, Sun XH, Cheng LF, Wong NB, Lee CS, Lee ST. Ambient effect on the electronic structures of tris-(8-hydroxyquinoline) aluminum films investigated by photoelectron spectroscopy. Chemical Physics Letters. 2001 Jan 12;333(3-4):212-216. doi: 10.1016/S0009-2614(00)01360-9

Liao, L. S. ; Sun, X. H. ; Cheng, L. F. et al. / Ambient effect on the electronic structures of tris-(8-hydroxyquinoline) aluminum films investigated by photoelectron spectroscopy. In: Chemical Physics Letters. 2001 ; Vol. 333, No. 3-4. pp. 212-216.