Current-voltage characteristics of dendrimer light-emitting diodes

Stevenson, S. G., Samuel, I. D. W., Staton, S. V,, Knights, K. A., Burn, P. L., Williams, J. H. T. and Walker, A. B. (2010) Current-voltage characteristics of dendrimer light-emitting diodes. Journal of Physics D: Applied Physics, 43 38: 385106-1-385106-8. doi:10.1088/0022-3727/43/38/385106


Author Stevenson, S. G.
Samuel, I. D. W.
Staton, S. V,
Knights, K. A.
Burn, P. L.
Williams, J. H. T.
Walker, A. B.
Title Current-voltage characteristics of dendrimer light-emitting diodes
Journal name Journal of Physics D: Applied Physics   Check publisher's open access policy
ISSN 0022-3727
Publication date 2010-09-29
Sub-type Article (original research)
DOI 10.1088/0022-3727/43/38/385106
Volume 43
Issue 38
Start page 385106-1
End page 385106-8
Total pages 8
Place of publication London, United Kingdom
Publisher Institute of Physics Publishing
Collection year 2011
Language eng
Formatted abstract
We have investigated current–voltage (I–V) characteristics of unipolar and bipolar organic diodes that use phosphorescent dendrimers as the emissive organic layer. Through simulation of the measured I–V characteristics we were able to determine the device parameters for each device structure studied, leading to a better understanding of injection and transport behaviour in these devices. It was found that the common practice of assuming injection barriers are equal to the difference between bare electrode work functions and molecular orbital levels is unsuitable for the devices considered here, particularly for gold contacts. The studies confirm that different aromatic units in the dendrons can give significant differences in the charge transporting properties of the dendrimers.
© IOP Publishing 2011
Keyword Soft matter, liquids and polymers
Condensed matter: electrical, magnetic and optical
Electronics and devices
Surfaces, interfaces and thin films
Optics, quantum optics and lasers
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article number 385106.

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2011 Collection
School of Chemistry and Molecular Biosciences
 
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Created: Sun, 10 Oct 2010, 00:03:19 EST