摘要:
An organic electro-luminescent device including an anode, a cathode, a light-emitting layer and a hole-transport layer is provided. The light-emitting layer is disposed between the anode and the cathode. The hole-transport layer is disposed between the light-emitting layer and the anode. The hole-transport layer has a formula as follows: wherein R is an alkyl group having 1˜3 carbon atoms.
摘要:
An organic electro-luminescent device including a substrate, a plurality of organic electro-luminescent units and at least one tungsten oxide layer is provided. The organic electro-luminescent units are stacked on the substrate, and each tungsten oxide layer is disposed between the adjacent organic electro-luminescent units. The organic electro-luminescent device having the at least one tungsten oxide layer therein has good luminance efficiency. Moreover, another organic electro-luminescent device is also provided in the present invention.
摘要:
An organic light emitting structure employs alkaline-earth metal between a cathode and an electron-transport layer. Such a structure may improve degraded luminescence of light emitting structure and enhance stability of element operation.
摘要:
An apparatus and method of employing self-assembled molecules to function as an electron injection layer of organic light emitting diodes (OLEDs) uses self-assembled molecules to function as an electron injection layer. A dipolar self-assembled molecules film is formed on a cathode metal layer to serve the electron injection layer. The self-assembled molecules have dipolar properties. The doner and the cathode metal layer form a key bond. The resulting dipolar direction formed in the self-assembled molecules can increase electron injection efficiency, thereby increase light emitting efficiency of OLED elements and reduce the threshold voltage of the OLED elements.