Study on the Chemical Mechanical Polishing Properties of OLEDs Preparedby Using MEH-PPV [2-Methoxy-5-(2-Ethylhexyloxy)-P-Phenylenevinylene]

摘要

The interface between the electrodes and the organic layers in organic light emitting diodes(OLEDs) has been reported as playing an important role in influencing their electrical and lumi-nescent properties. Indium tin oxide (ITO) is commonly used as the anode material. The ITOthin film has been deposited on glass substrate by radio-frequency (RF) magnetron sputtering andit has been used as an anode contact to fabricate an OLED device. The OLED devices with anITO/MEH-PPV/Al configuration were fabricated by using both thermal evaporation and spin coat-ing. We investigated the electrical, structural and optical properties of the ITO thin film by usingan atomic force microscope, a field-emission scanning electron microscope and an ultraviolet-visiblespectrophotometer. The interface property between ITO thin film and MEH-PPV were improvedas the surface of the ITO thin film become smoothes and photoluminescence intensity was increasedin the 680 nm range.