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

Research output: Contribution to journalArticle

14 Citations (Scopus)
89 Downloads (Pure)

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
Number of pages8
JournalMolecules
DOIs
Publication statusPublished - 18 Feb 2017

Keywords

  • polymer optoelectronics
  • poly(9,9-dioctylfluorene)
  • β-phase
  • amplified spontaneous emission
  • organic light emitting diode
  • PFO films

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