녹색 인광 유기발광다이오드에서 전하 조절층의 두께 변화가 성능에 미치는 효과에 대한 연구 = Effect of Changing the Thickness of Charge Control Layer on Performance of Green Phosphorescent Organic Light-Emitting Diodes

다국어 초록 (Multilingual Abstract)

We investigated green phosphorescent organic light-emitting diodes (PHOLEDs) withcharge control layer (CCL) to produce high efficiency. The CCL and host material which was4,4,N,N'-dicarbazolebiphenyl (CBP) of bipolar property can control the carrier movement inemitting layer (EML). The performance improvement by the insertion of CCL was realized to thewell confined exciton and the reduced triplet exciton quenching effect in EML. Five types ofdevices (Device A, B, C, D, and E) were fabricated following the thickness of CCL within EML.
The properties of device D using optimized thickness of CCL showed external quantum efficiencyof 16.22% and luminous efficiency of 55.76 cd/A, respectively.

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