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Proceedings Paper

Organic-fullerene composite anode structures for organic light-emitting diodes
Author(s): Y. Y. Yuan; S. Han; S. W. Tsang; D. Grozea; J. Zhang; Z. H. Lu
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Paper Abstract

CuPc:C60 Organic-Fullerene composites together with metals such as Au are found to form efficient hole injection structures for organic light-emitting diodes. C60 concentration of 30 wt.% yielded optimum device characteristics including low driving voltage, high current efficiency, and high thermal stability. In the case of Au/CuPc:C60 anode structure, extremely high current efficiency of ~ 8.7 cd/A and low operating voltage (i.e. 20 mA/cm2 at ~8V) has been achieved in a simple bi-layer device using Alq as emitter. Through a study on single carrier devices, the versatility of the composite injection structure is attributed to that C60 in the composite layer facilitate hole transfer from the metals to the composite whereas CuPc facilitate hole transport and transfer to a hole transport layer.

Paper Details

Date Published: 5 December 2006
PDF: 5 pages
Proc. SPIE 6333, Organic Light Emitting Materials and Devices X, 63331S (5 December 2006); doi: 10.1117/12.683415
Show Author Affiliations
Y. Y. Yuan, Univ. of Toronto (Canada)
S. Han, Univ. of Toronto (Canada)
S. W. Tsang, Univ. of Toronto (Canada)
D. Grozea, Univ. of Toronto (Canada)
J. Zhang, Univ. of Toronto (Canada)
Z. H. Lu, Univ. of Toronto (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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