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

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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).

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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

^aMaximum luminescence

^bMaximum luminescence efficiency

^cBlended interlayer based on TPD-oxetane:PFO-TPD-OCH₃ = 1:1 mixture

^dCrosslinkable polymer interlayer based on Poly(RO₂-spiro-TPA-oxetane).

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

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

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