Voltage reduction and lifetime elongation of organic light-emitting diodes using photopolymerization for fluorizated polyxylylene hole injection layer

Meng Dan Jiang*, Tien Lung Chiu, Pei Yu Lee, Shun Po Yang, Hong-Cheu Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

This study describes a novel method for manufacturing a hole injection layer of an organic light-emitting diode (OLED), comprising an ultraviolet (UV) reactive Br-fluorocarbon precursor (Br-CF 2-C 6F 4-CF 2-Br). The proposed method can be used to form a fluorizated polyxylylene film, demonstrating high repeatability on the anode as the hole injection layer of organic electroluminescent devices to enhance the hole injection, reduce the operating voltage of 1.2 V, and extend the operational lifetime by more than 150 times under a high current density of 125 mA/cm 2. Using a spin-coating process, the remaining precursor can be recycled to prevent wasting materials. UV curing without the solvent-removing process shortens manufacturing time. Hence, fabricating a high performance OLED using a simple, low-cost process is the aim of this study.

Original languageEnglish
Article number032101
JournalJapanese Journal of Applied Physics
Volume51
Issue number3 PART 1
DOIs
StatePublished - 1 Mar 2012

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