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Proceedings Paper

Photoluminescence studies of organic light-emitting devices based on 9,10-bis (2-naphthyl)-2-t-butylanthracene (TBADN)
Author(s): Yichun Luo; Qi Wang; Hany Aziz
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Paper Abstract

We studied changes in photoluminescence yield of 9,10-bis (2-naphthyl)-2-t-butylanthracene (TBADN), a commonly used blue emitter in organic light emitting devices (OLEDs). Our studies show that, unlike in case of tris (8-hydroxyquinoline) aluminum (AlQ3), current flow does not bring about a significant change in TBADN photoluminescence yield under 400nm excitation. We attribute the different behavior of TBADN to its bipolar carrier transport nature, which, in comparison to AlQ3, does not facilitate the build-up of significant space charges. Excitation at 360nm, however, leads to a rapid decrease in photoluminescence yield, even in the absence of electrical stressing, revealing that higher excited states of TBADN are less stable, and suggesting they could be playing a role in OLED electroluminescence degradation.

Paper Details

Date Published: 20 August 2009
PDF: 6 pages
Proc. SPIE 7415, Organic Light Emitting Materials and Devices XIII, 741503 (20 August 2009); doi: 10.1117/12.827970
Show Author Affiliations
Yichun Luo, Univ. of Waterloo (Canada)
Qi Wang, Univ. of Waterloo (Canada)
Hany Aziz, Univ. of Waterloo (Canada)

Published in SPIE Proceedings Vol. 7415:
Organic Light Emitting Materials and Devices XIII
Franky So; Chihaya Adachi, Editor(s)

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