Organic light-emitting diodes driven by pentacene-based thin-film transistors

Kitamura, M.; Imada, T.; Arakawa, Y.
October 2003
Applied Physics Letters;10/20/2003, Vol. 83 Issue 16, p3410
Academic Journal
Integrated circuits with an organic light-emitting diode (OLED) and a thin-film transistor (TFT) based on small molecules were fabricated on a glass substrate. The field-effect mobility and the current on/off ratio of the integrated TFTs with a pentacene layer deposited at room temperature were 0.12 cm[sup 2]/V s and higher than 10[sup 3], respectively. The OLEDs had a multilayer structure containing tris-(8-hydroxyquinoline) aluminum doped with coumarin 6 to obtain high luminance efficiency. The luminance was controlled in the range of up to approximately 1000 by applying the gate voltage of 10 to -10 V. The value of the luminance is sufficient for conventional displays. © 2003 American Institute of Physics.


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