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Ambipolar Light‐Emitting Transistors of a Tetracene Single Crystal
Author(s) -
Takahashi T.,
Takenobu T.,
Takeya J.,
Iwasa Y.
Publication year - 2007
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.200700046
Subject(s) - materials science , tetracene , ambipolar diffusion , optoelectronics , semiconductor , transistor , organic semiconductor , diode , organic field effect transistor , electron , field effect transistor , voltage , molecule , electrical engineering , physics , quantum mechanics , engineering
The first ambipolar light‐emitting transistor of an organic molecular semiconductor single crystal, tetracene, is demonstrated. In the device configuration, electrons and holes injected from separate magnesium and gold electrodes recombined radiatively within the channel. By varying the applied voltages, the position of the recombination/emission zone could be moved to any position along the channel. Because of the changes made to the device structure, including the use of single crystals and polymer dielectric layers and the adoption of an inert‐atmosphere fabrication process, the set of materials that can be used for light‐emitting transistors has been expanded to include monomeric molecular semiconductors.