Ordered and coplanar chain conformation of polyfluorenes by adopting solvent vapor treatment process for enhanced color purity in polymer light emitting diode

Chi Heon Kim, Ji Sub Park, Byeonggon Kim, Jeong Hoon Ko, Dong Hoon Jang, Hak Rin Kim

Research output: Contribution to journalConference articlepeer-review

Abstract

We investigated molecular chain conformation effect in polyfluorenes (PFO) according to film preparation conditions. By using solvent vapor annealing and introducing anisotropic alignment interface, the molecular conformation of the β phase could be effectively enhanced. The electroluminescence properties of the alterative current driven PLED with the β phase-enhanced PFO layer exhibited improved color purity for blue, polarized light emission, and more reliable light-emitting operation owing to the ordered and coplanar molecular chain conformation effects.

Original languageEnglish
Pages (from-to)1868-1871
Number of pages4
JournalDigest of Technical Papers - SID International Symposium
Volume49
Issue number1
DOIs
StatePublished - 2018
EventSID Symposium, Seminar, and Exhibition 2018, Display Week 2018 - Los Angeles, United States
Duration: 20 May 201825 May 2018

Keywords

  • AC-driven PLED
  • Polyfluorenes
  • Polymer light emitting diode (PLED)
  • Solvent vapor annealing
  • β phase

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