Issue 16, 2009
From the journal:

Soft Matter

Electroluminescence from printed stellate polyhedral oligomeric silsesquioxanes

Madhusudan Singh,ad   Hyun Sik Chae,b   Jesse D. Froehlich,b   Takashi Kondou,b   Sheng Li,b   Amane Mochizukib  and  Ghassan E. Jabbour*acd  

* Corresponding authors

a School of Materials, Arizona State University, Tempe, AZ, USA
E-mail: Jabbour@asu.edu

b Nitto Denko Technical Corporation, Oceanside, CA

c Flexible Display Center, Arizona State University, Tempe, AZ, USA

d Advanced Photovoltaics Center, Arizona State University, Tempe, AZ, USA

Abstract

Iridium-based stellate (star-shaped) polyhedral oligomeric silsesquioxane macromolecular dyes were synthesized and an inkjet printing process to deposit inks based on these materials was developed. Polymeric–macromolecular blended light emitting diodes based on these hybrid organic–inorganic dyes were studied. We find peak luminances of ∼10,000 cd/m2 with peak quantum efficiencies of ∼2.5% are possible with the printed layers. White light interferometry measurements suggest that large printed layer thicknesses and interface roughness play a crucial role in limiting device performance. A cumulative coffee-ring effect is considered to be the source of interface roughness.

Graphical abstract: Electroluminescence from printed stellate polyhedral oligomeric silsesquioxanes

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Article information

DOI
https://doi.org/10.1039/B903531A
Article type
Communication
Submitted
19 Feb 2009
Accepted
16 Jun 2009
First published
14 Jul 2009

Soft Matter, 2009,5, 3002-3005

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Electroluminescence from printed stellate polyhedral oligomeric silsesquioxanes

M. Singh, H. S. Chae, J. D. Froehlich, T. Kondou, S. Li, A. Mochizuki and G. E. Jabbour, Soft Matter, 2009, 5, 3002 DOI: 10.1039/B903531A

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