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Proceedings Paper

Electric field and temperature dependence of photoluminescence in fluorescent dye doped tris(8-hydroxyquinoline) aluminum
Author(s): Yichun Luo; Hany Aziz; Gu Xu; Zoran D. Popovic
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Paper Abstract

We measured electric-field-induced fluorescence quenching (EFIFQ) under various temperatures in both undoped and fluorescent dye-doped tris(8-hydroxyquinoline )aluminum (AlQ3) layers of organic light-emitting devices (OLEDs). Results show that for a given temperature doped AlQ3 layers demonstrate smaller EFIFQ than undoped ones. The phenomenon is attributed to the narrower energy band-gap of the guest molecule relative to that of the host material, which makes it less prone to electric-field-induced dissociation of the excited state. Results also show that for a given doping condition increasing the temperature leads to an increase in EFIFQ, indicating that the EFIFQ is a thermally assisted process.

Paper Details

Date Published: 5 December 2006
PDF: 5 pages
Proc. SPIE 6333, Organic Light Emitting Materials and Devices X, 63331V (5 December 2006); doi: 10.1117/12.692910
Show Author Affiliations
Yichun Luo, McMaster Univ. (Canada)
Hany Aziz, Xerox Research Ctr. of Canada (Canada)
Gu Xu, McMaster Univ. (Canada)
Zoran D. Popovic, Xerox Research Ctr. of Canada (Canada)

Published in SPIE Proceedings Vol. 6333:
Organic Light Emitting Materials and Devices X
Zakya H. Kafafi; Franky So, Editor(s)

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