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Electroluminescent Diodes Using Cyclohexane-Based Glass Forming Liquid Crystals and Their Analogues

Published online by Cambridge University Press:  10 February 2011

C. P. Lin ,
T. Tsutsui ,
S. Saito ,
S. H. Chen ,
J. C. Mastrangelo  and
H. Shi
C. P. Lin
Affiliation:
Graduate School of Engineering Science, Kyushu University, Fukuoka, Japan
T. Tsutsui
Affiliation:
Graduate School of Engineering Science, Kyushu University, Fukuoka, Japan
S. Saito
Affiliation:
Graduate School of Engineering Science, Kyushu University, Fukuoka, Japan
S. H. Chen
Affiliation:
University of Rochester, Center for Optoelectrons and Imaging, Rochester, NY 14623-1212
J. C. Mastrangelo
Affiliation:
University of Rochester, Center for Optoelectrons and Imaging, Rochester, NY 14623-1212
H. Shi
Affiliation:
University of Rochester, Center for Optoelectrons and Imaging, Rochester, NY 14623-1212
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Abstract

Organic electroluminescent(EL) diodes using spin-coat films of cyclohexane-based glass-forming liquid crystal (LC) materials were fabricated. The cyclohexane-based LC materials were found to be useful for EL diodes. Blending the LC materials with charge transport molecules was found to be a promising method for improving device performance. Conventional hole transport and electron transport molecules were found to show a tendency to form exciplexes with cyclohexanebased LC materials. This difficulty was overcome by the introduction of cyclohexane-based charge transport molecules. The EL quantum efficiency of 0.06% was attained in the single-layer devices with two-component blends.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 425: Symposium I – Liquid Crystals for Advanced Technologies , 1996 , 233
Copyright
Copyright © Materials Research Society 1996

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