Abstract
High efficiency blue phosphorescent organic light-emitting diodes were fabricated without an electron transport layer using a spirobifluorene based blue triplet host material. The simple blue PHOLEDs without the electron transport layer showed a high external quantum efficiency and current efficiency of 16.1% and 30.2 cd/A, respectively. The high device performances of the electron transport layer free blue PHOLEDs were comparable to those of blue PHOLEDs with the electron transport layer.
| Original language | English |
|---|---|
| Pages (from-to) | 1621-1624 |
| Number of pages | 4 |
| Journal | Journal of Luminescence |
| Volume | 131 |
| Issue number | 8 |
| DOIs | |
| State | Published - Aug 2011 |
| Externally published | Yes |
Keywords
- Blue phosphorescent organic light-emitting diodes
- High efficiency
- Simple device
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