Organic light-emitting devices (OLEDs) have been used in consumer products for many years. The technology provides brilliant images with thin and light-weight display panels suitable for mobile or car devices. Although the OLEDs available in the present market are made with low molecular materials, the devices based on polymeric materials are also studied for many years. Since they can form uniform films without pin-holes through wet-processes under the atmospheric pressure, they will be attractive candidates if one thinks about wide flat panel displays. However, the short lifetime of the polymer devices compared to the low-molecular devices hiders their commercial launch.
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