We developed metal-insulator-semiconductor-type organic light-emitting transistors (MIS-OLETs), and improved their properties by optimizing the device structure. MIS-OLETs showed a maximum drain current ofand on/off ratio of over 10 4 . Moreover an active-matrix display using MIS-OLETs on a plastic substrate was fabricated. The developed 16 Â 16 active-matrix-drive organic light-emitting transistors (AMOLET) showed excellent properties by optimizing device structure.

The authors report the characteristics of novel metal-insulator-semiconductor-type organic light-emitting transistors (MIS-OLETs). The drain current and luminescent intensity of the MIS-OLET can be controlled by changing hole injection carriers by applying a gate bias voltage. In addition, the high performance (400cd∕m2 at VD=−8V) of MIS-OLETs fabricated on a plastic substrate as well as on a glass substrate is demonstrated and described.

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