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An easy approach to control β-phase formation in PFO films for optimized emission properties

  • Qi Zhang
  • , Lang Chi
  • , Gang Hai
  • , Yueting Fang
  • , Xiangchun Li
  • , Ruidong Xia
  • , Wei Huang
  • , Erdan Gu
  • Nanjing University of Posts and Telecommunications
  • Nanjing Tech University
  • University of Strathclyde

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

We demonstrate a novel approach to control β-phase content generated in poly(9,9-dioctylfluorene) (PFO) films. A very small amount of paraffin oil was used as the additive to the PFO solution in toluene. The β-phase fraction in the spin-coated PFO films can be modified from 0% to 20% simply by changing the volume percentage of paraffin oil in the mixed solution. Organic light emitting diodes (OLEDs) and amplified spontaneous emission (ASE) study confirmed low β-phase fraction promise better OLEDs device, while high β-phase fraction benefits ASE performance.

Original languageEnglish
Article number315
JournalMolecules
Volume22
Issue number2
DOIs
StatePublished - 1 Feb 2017
Externally publishedYes

Keywords

  • Amplified spontaneous emission
  • Organic light emitting diode
  • Poly(9,9-dioctylfluorene)
  • Polymer optoelectronics
  • β-phase

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