Optical and electroluminescence studies of orange light-emitting copolymers based on polyfluorene

Yang Xu, Hua Wang, Xuguang Liu, Yuling Wu, Zhixiang Gao, Shuhao Wang, Yanqin Miao, Mingwei Chen, Bingshe Xu

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    A series of novel soluble conjugated copolymers derived from 9,9-dioctylfuorene and 2,7-di-(2-thienyl)-9-fluorenone (DTFO) were synthesized by Suzuki cross coupling reaction with different feed ratios. All polymers showed good thermal stability with 5% weight loss up to 410 °C and good solubility in common organic solvents. With the increase of the DTFO unit's content in the copolymers, the emission peaks red-shifted from 550 to 608 nm owing to more complete energy transfer and charge trapping. But turn-on voltage increased and current efficiency decreased with increasing DTFO content. When the content of DTFO was 5%, the maximum luminance of the devices was 2164 cd/m2.

    Original languageEnglish
    Pages (from-to)858-862
    Number of pages5
    JournalJournal of Luminescence
    Volume134
    DOIs
    Publication statusPublished - 2013 Feb 1

    Keywords

    • OLED
    • Orange light
    • Polyfluorene

    ASJC Scopus subject areas

    • Biophysics
    • Biochemistry
    • Chemistry(all)
    • Atomic and Molecular Physics, and Optics
    • Condensed Matter Physics

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