Abstract
A thermally stable aromatic amine derivative with a symmetrically substituted double spirobifluorene core was synthesized as a hole transport material for green phosphorescent organic light-emitting diodes. A high glass transition temperature of 142 °C was obtained and a film morphology of the hole transport material was kept stable up to 120 °C. The hole transport material showed a high triplet energy of 2.53 eV and a quantum efficiency of 17.4% in green phosphorescent organic light-emitting diodes.
| Original language | English |
|---|---|
| Pages (from-to) | 415-419 |
| Number of pages | 5 |
| Journal | Thin Solid Films |
| Volume | 522 |
| DOIs | |
| State | Published - 1 Nov 2012 |
| Externally published | Yes |
Keywords
- Double spirobifluorene
- Glass transition temperature
- High efficiency
- High triplet energy
- Thermal stability
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