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Molecular Crystals and Liquid Crystals Volume 471, 2007 - Issue 1
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Organic Photovoltaics, Transistors, Light-Emitting Diodes and Other Devices

Introduction of Interlayer via Oxetane Based Crosslinking Method for Blue Polymer Light-Emitting Diode Applications

Won Suk Shin Center for Plastic Information System, Pusan National University, Busan, Korea
,
Sung Chul Kim Department of Chemistry Education and Interdisciplinary Program of Advanced Information and Display Materials, Pusan National University, Busan, Korea
,
Eun-Jae Lee Department of Chemistry Education and Interdisciplinary Program of Advanced Information and Display Materials, Pusan National University, Busan, Korea
,
Sung-Min Park Department of Chemistry Education and Interdisciplinary Program of Advanced Information and Display Materials, Pusan National University, Busan, Korea
,
Sung-Ho Jin Center for Plastic Information System, Pusan National University, Busan, Korea; Department of Chemistry Education and Interdisciplinary Program of Advanced Information and Display Materials, Pusan National University, Busan, KoreaCorrespondence[email protected]
,
Jae Wook Lee Department of Chemistry, Dong-A University, Busan, Korea
&
Yeong-Soon Gal Polymer Chemistry Lab., Kyungil University, Hayang, Korea
 show all
Pages 335-343 | Published online: 22 Sep 2010
 
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Abstract

Two interlayers, blended interlayer based on TPD-oxetane with PFO-TPD-OCH3 and crosslinkable polymer interlayer based on Poly(RO2-spiro-TPA-oxetane), were introduced in polymer light-emitting diodes (PLEDs). Both interlayers showed resistance to organic solvents and the performance of PLEDs was greatly enhanced when each interlayer was inserted. The maximum luminescence efficiency of 0.147 cd/A at 11 V and the maximum luminescence of 739 cd/m2 at 15 V have been achieved with blue light emitting polymer, Poly(RO2-spirobifluorene).

Acknowledgments

This research was supported by the University IT Research Center (ITRC) Project of the Ministry of Information and Communication (J. W. Lee) and the National Research Laboratory (NRL) program of KOSEF (S. H. Jin).

Notes

a Maximum luminescence

b Maximum luminescence efficiency

c Blended interlayer based on TPD-oxetane:PFO-TPD-OCH3  = 1:1 mixture

d Crosslinkable polymer interlayer based on Poly(RO2-spiro-TPA-oxetane).

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