White Organic Light-Emitting Devices Using the Blue and Green Fluorescent Emitting Layer Structure Incorporating with Red Phosphorescent Emitting Layer

Li Shuang Wu; Hui Shan Yang

doi:10.4028/www.scientific.net/AMR.753-755.2521

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 753-755White Organic Light-Emitting Devices Using the...

White Organic Light-Emitting Devices Using the Blue and Green Fluorescent Emitting Layer Structure Incorporating with Red Phosphorescent Emitting Layer

Abstract:

Efficient white organic light-emitting diodes are fabricated with the blue and green fluorescent incorporating red phosphorescent emitting layer. The blue, green and red emitting layer consist of 1,4-bis (2,2-diphenyl vinyl) benzene (DPVBi), tris (8-hydroxyquinoline) aluminium (Alq) and the bis (1-(phenyl) isoquinoline) iridium (III) acetylanetonate [Ir (piq)₂(acac)] doped into 4,4(-N,N)-dicarbazole-biphenyl (CBP) host, respectively. The devices were made of ITO/ m-MTDATA (40 nm)/ NPB (10 nm) /DPVBi (8 nm)/ CBP: Ir (piq)₂(acac) x% 5nm/ Alq (50 nm )/ LiF (1 nm) / Al (200 nm). The electroluminescent (EL) spectra exhibit three peaks at 456, 520 and 620 nm, resulting in white light-emission with the Commission Internationale dEclairage (CIE) chromaticity coordinates of (0.37, 0.44) at 4V to (0.23, 0.30) at 13V when x is 4, while the device shows the current efficiency of 4.0 cd/A at 6V, and its maximum luminance is 21660 cd/m² at 13V, respectively.

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Advanced Materials Research (Volumes 753-755)

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2521-2525

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https://doi.org/10.4028/www.scientific.net/AMR.753-755.2521

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August 2013

Authors:

Li Shuang Wu, Hui Shan Yang

Keywords:

Commission Internationale de l’Eclairage (CIE) Coordinates, Efficiency, Luminance, White Organic Light-Emitting Diode (OLED)

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