Emission color tuning in ambipolar organic singlecrystal field-effect transistors by dye-doping

Hajime Nakanotani, Masatoshi Saito, Hiroaki Nakamura, Chihaya Adachi

Research output: Contribution to journalArticlepeer-review

67 Citations (Scopus)

Abstract

The effect of dye-doping in ambipolar light-emitting organic field-effect transistors (LE-OFETs) is investigated from the standpoint of the carrier mobilities and the electroluminescence (EL) characteristics under ambipolar operation. Dye-doping of organic crystals permits not only tuning of the emission color but also significantly increases the efficiency of ambipolar LEOFETs. A rather high external EL quantum efficiency (∼0.64%) of one order of magnitude higher than that of a pure p-distyrylbenzene (P3V2) single crystal is obtained by tetracene doping. The doping of tetracene molecules into a host P3V2 crystal has almost no effect on the electron mobility and the dominant carrier recombination process in the tetracene-doped P3V2 crystal involves direct carrier recombination on the tetracene molecules.

Original languageEnglish
Pages (from-to)1610-1615
Number of pages6
JournalAdvanced Functional Materials
Volume20
Issue number10
DOIs
Publication statusPublished - May 25 2010

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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