Graded-host phosphorescent light-emitting diodes with high efficiency and reduced roll-off
We demonstrated graded-host phosphorescent organic light-emitting diodes with high efficiency and reduced efficiency roll-off. The emissive layer of the graded host device consists of both electron and hole transport type hosts, 1,3,5-tris(N-phenylbenzimidazole-2-yl)benzene (TPBI) and 4,4′,4′′-tris(...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2012-03-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.3701685 |