Progress in Emission Efficiency of Organic Light-Emitting Diodes : Basic Understanding and Its Technical Application

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書誌事項

公開日
2013-11
DOI
  • 10.7567/jjap.52.110001
公開者
Tokyo : The Japan Society of Applied Physics

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説明

<jats:p>The technical history of when and how the basic understanding of the emission efficiency of organic light-emitting diodes (OLEDs) was established over the last 50 years is described. At first, our understanding of emission efficiency in single-crystal and thin-film electroluminescence (EL) devices in the early stages before the Eastman-Kodak breakthrough, that is, the introduction of the concept of multilayer structures, is examined. Then our contemplation travels from the Eastman-Kodak breakthrough towards the presently widely accepted concept of emission efficiency. The essential issues concerning the emission efficiency of OLEDs are summarized to help readers to obtain a common understanding of OLED efficiency problems, and detailed discussions on the primary factors that determine emission efficiency are given. Finally, some comments on remaining issues are presented.</jats:p>

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