论文信息 - Bright green organic light-emitting devices having a composite electron transport layer

Bright green organic light-emitting devices having a composite electron transport layer

Abstract A bright green organic light-emitting device employing a co-deposited Al–Alq 3 layer has been fabricated. The device structure is glass/indium tin oxide (ITO)/ N , N ′-diphenyl- N , N ′- (3-methylphenyl)-1, 1′-biphenyl-4, 4′-diamine (TPD)/tris(8-quinolinolato) aluminum (Alq 3 )/ Al–Alq 3 /Al. In this device, Al–Alq 3 is used as electron transport layer (ETL). The device shows an operation voltage of 6.1 V at 20 mA/cm 2 . At optimal condition, the brightness of a device at 20 mA/cm 2 is 2195 cd/m 2 achieved a luminance efficiency of 5.64lm/W. The result proves that the composite Al–Alq 3 layer is suitable for the ETL of organic light-emitting devices (OLEDs).

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