Optimization of Organic Light Emitting Diode Structures

Chan, J., Rakic, A. D., Kwong, C. Y., Djurisic, A. B., Majewski, M. L., Chan, W. K. and Chui, P. C. (2004). Optimization of Organic Light Emitting Diode Structures. In: C. Jagadish and K. Choquette etal, Proceedings of the Photonics: Design, Technology, and Packaging. SPIE International Symposium on Microelectronics, MEMS, and Nanotechnology, Perth, Australia, (311-319). 10-12 December, 2003. doi:10.1117/12.522861

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Author Chan, J.
Rakic, A. D.
Kwong, C. Y.
Djurisic, A. B.
Majewski, M. L.
Chan, W. K.
Chui, P. C.
Title of paper Optimization of Organic Light Emitting Diode Structures
Conference name SPIE International Symposium on Microelectronics, MEMS, and Nanotechnology
Conference location Perth, Australia
Conference dates 10-12 December, 2003
Proceedings title Proceedings of the Photonics: Design, Technology, and Packaging   Check publisher's open access policy
Journal name Photonics: Design, Technology, and Packaging   Check publisher's open access policy
Place of Publication Washington
Publisher The Society of Photo-Optical Instrumentation Engineers
Publication Year 2004
Sub-type Fully published paper
DOI 10.1117/12.522861
Open Access Status File (Publisher version)
ISBN 9780819451705
ISSN 0277-786X
Editor C. Jagadish
K. Choquette etal
Volume 5277
Start page 311
End page 319
Total pages 9
Collection year 2004
Language eng
Abstract/Summary In this work we present detailed analysis of the emitted radiation spectrum from tris(8-hydroxyquinoline) aluminum (Alq3) based OLEDs as a function of: the choice of cathode, the thickness of organic layers, and the position of the hole transport layer/Alq3 interface. The calculations fully take into account dispersion in glass substrate, indium tin oxide anode, and in the organic layers, as well as the dispersion in the metal cathode. Influence of the incoherent transparent substrate (1 mm glass substrate) is also fully accounted for. Four cathode structures have been considered: Mg/Ag, Ca/Ag, LiF/Al, and Ag. For the hole transport layer, N,N'-diphenyl-N,N'-(3-methylphenyl)-1,1'-biphenyl-4,4'-diamine (TPD) was considered. As expected, emitted radiation is strongly dependent on the position of the emissive layer inside the cavity and its distance from the metal cathode. Although our optical model for an OLED does not explicitly include exciton quenching in vicinity of the metal cathode, designs placing emissive layer near the cathode are excluded to avoid unrealistic results. Guidelines for designing devices with optimum emission efficiency are presented. Finally, the optimized devices were fabricated and characterized and experimental and calculated emission spectra were compared.
Subjects 240400 Optical Physics
240402 Quantum Optics and Lasers
240401 Optics and Opto-electronic Physics
671299 Computer hardware and electronic equipment not elsewhere classified
Q-Index Code E1
Additional Notes Copyright 2004 Society of Photo-Optical Instrumentation Engineers. This paper was published in Proceedings of SPIE 5277 (2004) and is made available as an electronic reprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. Preprint of: J. Chan, A. D. Rakic, C. Y. Kwong, A. B. Djurisic, M. L. Majewski, W. K. Chan and P. C. Chui "Optimization of organic light emitting diode structures" Proc. SPIE 5277(1), 311-319 (2004)

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Created: Wed, 15 Feb 2006, 10:00:00 EST by Jesse Chan on behalf of School of Information Technol and Elec Engineering