Improved Fabrication Process for Enhancing Light Emission in Single-Layer Organic Light-Emitting Devices Doped with Organic Salt

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概要

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• We investigated an improved method for enhancing light emission in single-layer organic light-emitting devices (OLEDs) stimulated by thermal and electrical annealing. In this study, we introduced fluorescent single-layer OLEDs doped with organic salt, tetrabutylammonium tetrafluoroborate (Bu4NBF4). The annealing process consisted of simultaneously treated by thermal and electrical annealing in a noble gas environment filled with argon gas. Comparing with nonannealed OLEDs, we clearly observed homogeneous and ehanced electroluminescent (EL) emission over the entire active area with fast response and improved efficiency from annealed OLEDs. According to these improved EL characteristics, we considerably assumed that these phenomenons leading to the enhanced EL of single-layer OLEDs due to increased and balanced injection of carriers are due to simultaneous annealing, which induces proper adsorption of charged salt ions on the electrode surface.

• 2008-02-25

著者

• Park Dae

  Department Of Chemical Engineering Pusan National University

• Yang Jong

  Department Of Electrical Engineering And Computer Science Kaist

• Yang Jong

  Department of Electrical Materials Engineering, Wonkwang University, 344-2 Shinyong-dong, Iksan 570-749, Korea

• Yim Youn

  Department of Electrical Materials Engineering, Wonkwang University, 344-2 Shinyong-dong, Iksan 570-749, Korea

• Park Dae

  Department of Electrical Materials Engineering, Wonkwang University, 344-2 Shinyong-dong, Iksan 570-749, Korea

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• Improved Fabrication Process for Enhancing Light Emission in Single-Layer Organic Light-Emitting Devices Doped with Organic Salt

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