Highly efficient blue organic light-emitting diodes using dual emissive layers with host-dopant system

Bo Mi Lee; Hyeong Hwa Yu; You Hyun Kim; Nam Ho Kim; Ju An Yoon; Peter Mascher; Woo Young Kim

doi:10.1117/12.2001394

24 October 2012 Highly efficient blue organic light-emitting diodes using dual emissive layers with host-dopant system

Bo Mi Lee, Hyeong Hwa Yu, You Hyun Kim, Nam Ho Kim, Ju An Yoon, Peter Mascher, Woo Young Kim

Proceedings Volume 8412, Photonics North 2012; 841221 (2012) https://doi.org/10.1117/12.2001394
Event: Photonics North 2012, 2012, Montréal, Canada

Abstract

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.

Citation Download Citation

Bo Mi Lee, Hyeong Hwa Yu, You Hyun Kim, Nam Ho Kim, Ju An Yoon, Peter Mascher, and Woo Young Kim "Highly efficient blue organic light-emitting diodes using dual emissive layers with host-dopant system", Proc. SPIE 8412, Photonics North 2012, 841221 (24 October 2012); https://doi.org/10.1117/12.2001394

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KEYWORDS

Organic light emitting diodes

Luminous efficiency

Electrons

Energy transfer

Quantum wells

Excitons

Aluminum

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