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Efficient new amorphous hole-transporting molecular materials (AHTMs) with high glass transition temperatures (T g >117 o C). have been developed. AHTMs were easily prepared by condensation of 1,1,1-Tris(4-hydroxyphenyl)ethane (1) and triphenylamine derivatives using a condensing agent dicyclohexylcarbodiimide (DCC). The organic light-emitting device (OLED) prepared by using spin-cast...
During stability testing of organic light-emitting diodes (LEDs), a large amount of current (charge) injected into the LED cells raises the cell temperature quite a bit. The morphology of the organic thin films may have changed and formed the excimer and exciplex between different molecules. To keep the excimer and exciplex from forming during the driving test, the organic molecules should give steric...
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