Horizontal molecular orientation of light-emitting oligofluorenes in spin-coated glassy organic thin films

Li Zhao, Takeshi Komino, Dae Hyeon Kim, Muhammad Hasnan Sazzad, Delphine Pitrat, Jean Christophe Mulatier, Chantal Andraud, Jean Charles Ribierre, Chihaya Adachi

研究成果: ジャーナルへの寄稿記事

10 引用 (Scopus)

抜粋

Horizontal orientation of light-emitting chromophores plays a critical role in the light outcoupling efficiency and the overall performances of organic light-emitting diodes. Here, we demonstrate that such a horizontal orientation of light-emitting molecules can be achieved in solution-processed blends containing highly fluorescent oligofluorenes dispersed into various small molecule host materials. The influences of the host material, the solvent used for the spin-coating, the doping concentration of the oligofluorenes and the oligofluorene chemical structure on these orientational processes are investigated using variable angle spectroscopic ellipsometry and angle-dependent photoluminescence measurements. By clarifying the roles played by these parameters in the horizontal orientation of the emitters, the results provide crucial insights into these molecular orientational processes in spin-coated glassy organic thin films, which should be relevant for the development of high-efficiency solution-processed organic light-emitting diodes in the near future.

元の言語英語
ページ(範囲)11557-11565
ページ数9
ジャーナルJournal of Materials Chemistry C
4
発行部数48
DOI
出版物ステータス出版済み - 1 1 2016

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Chemistry

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  • これを引用

    Zhao, L., Komino, T., Kim, D. H., Sazzad, M. H., Pitrat, D., Mulatier, J. C., Andraud, C., Ribierre, J. C., & Adachi, C. (2016). Horizontal molecular orientation of light-emitting oligofluorenes in spin-coated glassy organic thin films. Journal of Materials Chemistry C, 4(48), 11557-11565. https://doi.org/10.1039/c6tc02861f