Abstract
4,4'-(9,9 '-/2,3 '-bicarbazolel-9,9 '-diyl) bls(N,N-di-p-tolylaniline) (44BBDT) was synthesized between 9H,9'H-2,3'-bicarbazole and 4-bromo-N,N'-di-p-tolylanUine as a host material in blue phosphorescent organic light emitting diodes (PHOLEDs). This material showed high triplet energy above 2.78 eV. The highest occupied molecular orbital and lowest unoccupied molecular orbital were -5.76 eV and -2.47 eV, respectively. The 44BRDT was applied as the host material of the blue triplet emitter derived from phenylimidazole ligand and the 44BBDT device showed maximum external quantum efficiency of 17.8% with low driving voltage.
| Original language | English |
|---|---|
| Pages (from-to) | 1668-1670 |
| Number of pages | 3 |
| Journal | Digest of Technical Papers - SID International Symposium |
| Volume | 46 |
| Issue number | Book 3 |
| DOIs | |
| State | Published - 1 Jun 2015 |
| Event | 2015 SID International Symposium - San Jose, United States Duration: 4 Jun 2015 → 5 Jun 2015 |
Keywords
- Emitting layer (EML)
- Host material (host)
- Organic light emitting diodes (OLEDS)
- Triplet energy (T)