Fabrication of white light-emitting electrochemical cells with stable emission from exciplexes

Soichi Uchida, Daisuke Takizawa, Satoru Ikeda, Hironori Takeuchi, Suzushi Nishimura, Hiroyuki Nishide, Yoshinori Nishikitani

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2 Citations (Scopus)

Abstract

The authors present an approach for fabricating stable white light emission from polymer light-emitting electrochemical cells (PLECs) having an active layer which consists of blue-fluorescent poly(9,9-di-n-dodecylfluorenyl-2,7-diyl) (PFD) and π-conjugated triphenylamine molecules. This white light emission originates from exciplexes formed between PFD and amines in electronically excited states. A device containing PFD, 4,4′,4″-tris[2-naphthyl(phenyl)amino]triphenylamine (2-TNATA), Poly(ethylene oxide) and K2CF3SO3 showed white light emission with Commission internationale de l'éclairage (CIE) coordinates of (0.33, 0.43) and a Color Rendering Index (CRI) of Ra = 73 at an applied voltage of 3.5 V. Constant voltage measurements showed that the CIE coordinates of (0.27, 0.37), Ra of 67, and the emission color observed immediately after application of a voltage of 5 V were nearly unchanged and stable after 300 sec.

Original languageEnglish
Article numbere54628
JournalJournal of Visualized Experiments
Volume2016
Issue number117
DOIs
Publication statusPublished - 2016 Nov 15

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Keywords

  • Color rendering index
  • Engineering
  • Exciplex
  • Exciton
  • Fluorescent π-conjugated polymer
  • Polymer light-emitting electrochemical cell
  • White light emission

ASJC Scopus subject areas

  • Neuroscience(all)
  • Chemical Engineering(all)
  • Immunology and Microbiology(all)
  • Biochemistry, Genetics and Molecular Biology(all)

Cite this

Uchida, S., Takizawa, D., Ikeda, S., Takeuchi, H., Nishimura, S., Nishide, H., & Nishikitani, Y. (2016). Fabrication of white light-emitting electrochemical cells with stable emission from exciplexes. Journal of Visualized Experiments, 2016(117), [e54628]. https://doi.org/10.3791/54628