Phys. Rev. Lett. 100, 066601 (2008) [4 pages]High Current Density in Light-Emitting Transistors of Organic Single CrystalsReceived 3 August 2007; published 13 February 2008 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. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.100.066601
DOI:
10.1103/PhysRevLett.100.066601
PACS:
72.80.Le, 71.35.−y, 73.40.−c, 73.61.Ph
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.