Efficiency improvement of red organic light-emitting diodes using a blue phosphorescent exciton blocking layer |
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| Authors: | Kyoung Soo Yook |
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| Institution: | Department of Polymer Science and Engineering, Dankook University, Jukjeon-dong, Suji-gu, Yongin-si, Kyeonggi-do 448-701, Republic of Korea |
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| Abstract: | Quantum efficiency of red organic light-emitting diodes was improved using a blue phosphorescent emitting layer as an exciton blocking layer. Compared with 8.1% quantum efficiency of standard devices without an exciton blocking layer, high quantum efficiency of 14.1% was obtained using a blue phosphorescent emitting layer between the hole transport layer and the red emitting layer. |
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| Keywords: | High efficiency Phosphorescent red device Exciton blocking |
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