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Organic light-emitting diodes with ultra thin Rubrene layer have been fabricated with the structure of ITO/hole-transport layer/Rubrene/AlQ/LiF/Al. The hole-transport layer are copper phthalocyanine (CuPc), poly(3,4-ethylenedioxythiophene) doped with polystrenesulphonic acid (PEDOT: PSS), poly(N-vinyl carbazole) (PVK), and N,N′-diphenyl-N,N′-bis(1,1′-biphenyl)-4,4′-diamine (NPB), respectively. Compared...
Organic light-emitting diodes (OLEDs) with multiple hole-trapping-layer (HTL) structures, which consist of N,N′-bis-(1-naphthyl)-N, N′-diphenyl-1,1′-biphenyl 4,4′-diamine (NPB), bathocuproine (BCP) and tris(8-hydroxy-quinoline)aluminum (Alq 3 ) have been fabricated. The emitting zone of the device with the structure of ITO/[NPB/BCP] n /Alq 3 /LiF/Al can be changed by the number...
A white-light-emitting device has been fabricated with a structure of ITO/NPB/BCP/Alq 3 /LiF/Al. The hole blocking layer(BCP) result in a mixture of lights from NPB molecules (blue-light) and Alq 3 molecules (olivine-light), thereby producing white-light emission. The chromaticity can be readily adjusted by only varying the thickness of the BCP layer. The CIE coordinates of the device...
Organic light-emitting diodes (OLEDs) with a nanostructured TiO 2 layer at the interface between indium tin oxide and a-naphtylphenyliphenyl diamine layers were fabricated using a vacuum evaporation method. The nanostructured TiO 2 layer was achieved by the Sol-Gel method. Compared to the different thickness of the buffer layer, the OLEDs with the 6 nm buffer layer showed the highest...
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