High current density in light-emitting transistors of organic single crystals

Taishi Takenobu*, Satria Zulkarnaen Bisri, Tetsuo Takahashi, Masayuki Yahiro, Chihaya Adachi, Yoshihiro Iwasa

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

209 Citations (Scopus)


We measured the external electroluminescence quantum efficiency (ηext) in light-emitting field-effect transistors (LETs) made of organic single crystals and found that, in the ambipolar transport region, ηext is not degraded up to several hundreds A/cm2 current-density range, which is 2 orders of magnitude larger than that achieved in conventional organic light-emitting diodes. The present result indicates the single-crystal organic LET is a promising device structure that is free from various kinds of nonradiative losses such as exciton dissociation near electrodes and exciton annihilations.

Original languageEnglish
Article number066601
JournalPhysical Review Letters
Issue number6
Publication statusPublished - 2008 Feb 13
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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