Design of microcavity organic light emitting diodes with optimized electrical and optical performance

Lu, Albert W. and Rakic, Aleks D. (2009) Design of microcavity organic light emitting diodes with optimized electrical and optical performance. Applied Optics, 48 12: 2282-2289. doi:10.1364/AO.48.002282


Author Lu, Albert W.
Rakic, Aleks D.
Title Design of microcavity organic light emitting diodes with optimized electrical and optical performance
Journal name Applied Optics   Check publisher's open access policy
ISSN 0003-6935
Publication date 2009-04-01
Year available 2009
Sub-type Article (original research)
DOI 10.1364/AO.48.002282
Open Access Status Not yet assessed
Volume 48
Issue 12
Start page 2282
End page 2289
Total pages 8
Editor Joseph N. Mait
Place of publication Washington , DC
Publisher Optical Society of America
Language eng
Subject 100702 Molecular and Organic Electronics
970109 Expanding Knowledge in Engineering
C1
Abstract A multivariable and multiobjective organic light emitting diode (OLED) design and optimization procedure is presented that produces a microcavity OLED with optimal optical and electrical characteristics. We propose here a design procedure that splits the design process into two design stages where each stage can be optimized independently. In the first stage we design the OLED with optimal electrical and optical performance, where the mirrors are specified by their optimal spectral reflectivity, transmissivity, absorptance, and the phase shift on reflection. In the second stage we synthesize the top and the bottom multilayer mirrors with a minimal number of layers that satisfy the required optimal spectral dependencies determined in the first part of the design process. As a case study we present an optimized design for a top-emitting OLED with a simple bilayered cavity consisting of N, N'-di(naphthalene-1-yi)-N, N'-diphenylbenzidine (NPB) as the hole transport layer and tris(8-hydroxyquinoline)aluminium (Alq(3)) as the electron transport layer. Conventional devices with an ITO-LiF/Al electrode pair and a Ag-Ag electrode pair are used as reference devices to benchmark the performance of our design. Electrical simulations using the drift-diffusion model and optical simulations employing the integrated dipole antenna approach are implemented to test the performance of the devices. The optimized device shows improved optical and electrical performance when compared with the reference devices. (c) 2009 Optical Society of America
Keyword VIEWING-ANGLE
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Information Technology and Electrical Engineering Publications
 
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Created: Thu, 03 Sep 2009, 18:11:04 EST by Mr Andrew Martlew on behalf of School of Information Technol and Elec Engineering