Research on the Organic Light-emitting Devices

This paper introduces the structure and the light emitting mechanism of organic light-emitting devices(OLED).From the band structure of organic semiconductor and that of the OLED,the OLED luminescence process is analyzed.At the same time it is pointed out how to raise the luminescent efficiency of the device.In the end the recent advances in technology and the ap-plication foreground on the devices are summarized,and future developments are given.