Photoluminescence studies of organic light-emitting devices based on 9,10-bis (2-naphthyl)-2-t-butylanthracene (TBADN)

Yichun Luo; Qi Wang; Hany Aziz

doi:10.1117/12.827970

20 August 2009 Photoluminescence studies of organic light-emitting devices based on 9,10-bis (2-naphthyl)-2-t-butylanthracene (TBADN)

Yichun Luo, Qi Wang, Hany Aziz

Author Affiliations +

Proceedings Volume 7415, Organic Light Emitting Materials and Devices XIII; 741503 (2009) https://doi.org/10.1117/12.827970
Event: SPIE Photonic Devices + Applications, 2009, San Diego, California, United States

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.

Citation Download Citation

Yichun Luo, Qi Wang, and Hany Aziz "Photoluminescence studies of organic light-emitting devices based on 9,10-bis (2-naphthyl)-2-t-butylanthracene (TBADN)", Proc. SPIE 7415, Organic Light Emitting Materials and Devices XIII, 741503 (20 August 2009); https://doi.org/10.1117/12.827970

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