Low thresholds for a nonconventional polymer blend-Amplified spontaneous emission and lasing in F81- x: SYx system

Research output: Contribution to journalArticlepeer-review


  • Muhammad Umair Hassan
  • Yee Chen Liu
  • Kamran ul Hasan
  • Jui Fen Chang
  • Ayooye Abigael Olawoyin
  • Richard Henry Friend

External organisations

  • COMSATS Institute Information TechnologyShehzad Town


A mixture of two polymer materials, poly (9,9-dioctylfluorene) (F8), and one of the poly(para-phenylenevinylene) derivatives, superyellow (SY) have been used to make F81- x:SYx polymer blend system. Under a 3-5 ns pulsed-laser excitation, this system showed excellent optical properties with low threshold values of ≈14 μJ/cm2 and ≈8 μJ/cm2 for amplified spontaneous emission and optically pumped lasing, respectively. The proposed system was also electroluminescent and an interesting candidate for future research on polymer injection lasers.


Original languageEnglish
Pages (from-to)15–21
JournalJournal of Polymer Science. Part B, Polymer Physics
Issue number1
Early online date22 Oct 2015
Publication statusPublished - Jan 2016


  • Amplified spontaneous emission, Low threshold, Optical pumping, Polymer blend