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Indexed by:期刊论文

Date of Publication:2011-05-01

Journal:JOURNAL OF APPLIED PHYSICS

Included Journals:SCIE、EI

Volume:109

Issue:9

ISSN No.:0021-8979

Abstract:Tris (8-hydroxyquinolino) aluminum (Alq(3)) films and their chemical failure process are investigated using x-ray photoelectron spectroscopy. We make sure that the O 1s spectrum of the pristine Alq(3) only has one component which is in contrast to the current controversy on this issue. Our experiments further indicate that the chemical failure process of Alq(3) holds the critical role to understand this problem. The chemical failure process also shows the organic carbon contamination and the replacement reaction between Alq(3) and water, ultimately resulted in the failure of the device. These fundamental results provide a basis understanding for future development of Alq(3)-based light emitting devices. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3562151]