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Our research group concentrates on the fabrication of organic semiconductor devices for a range of optoelectronic applications, including light emitting field effect transistors, photovoltaic devices, light emitting diodes and sensors. We aim to realize the electrically driven laser using organic materials. Organic laser is a new research could make lasers emitting a wide range of colors more accessible and open new applications from communications and sensing to displays. The figure shows the FET structure and the light emission images of the electrical and optical excitation.