KEYWORDS: Organic light emitting diodes, Luminous efficiency, Electrons, Energy transfer, Quantum wells, Excitons, Electroluminescence, Energy efficiency, Quantum efficiency, Electron transport
We fabricated highly efficient blue organic light-emitting diodes (OLEDs) by designing differing emitting layer structures with fluorescent host and dopant materials of 4,4-bis (2,2-diphenylyinyl)-1,10-biphenyl and 9,10-bis (2-naphthyl) anthracene as host materials and 4,4’-bis (9-ethyl-3-carbazovinylene)-1,1’biphenyl (BCzVBi) as a dopant material to demonstrate electrical and optical improvements. Best enhancement in luminance and luminous efficiency were achieved by a quantum well structure in device F with 8668 cd/m 2 at 8 V and 5.16 cd/A at 103.20 mA/cm 2 , respectively. Among the blue OLED devices doped by BCzVBi, device B emits the deepest blue emission with Commission Internationale de l’É clairage coordinates of (0.157, 0.117) at 8 V.
In this study, we fabricated highly efficient blue organic light-emitting diodes by designing different emitting layer
structures with fluorescent host and dopant materials of 4,4-bis(2,2-diphenylyinyl)-1,10-biphenyl (DPVBi) and 9,10-
bis(2-naphthyl) anthracene (ADN) as host materials and 4,4’-bis(9-ethyl-3-carbazovinylene)-1,1’biphenyl (BCzVBi) as a
dopant material to demonstrate electrical and optical improvements. Best enhancement in luminance and luminous
efficiency were achieved by a quantum well structure and energy transfer between host and dopant materials in device F
as of 8668cd/m2 at 8V and 5.16 Cd/A at 103.20 mA/cm2 respectively. Among the blue OLED devices doped by
BCzVBi, device B emits the deepest blue emission with Commission Internationale de l’E´ clairage (CIExy) coordinates
of (0.157, 0.117) at 8V.
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