Abstract
The electroluminescent (EL) properties of a cross-linkable carbazole-terminated poly(benzyl ether) dendrimer, G3-cbz DN, doped into a PVK:PBD host matrix with a double-layer device configuration are investigated. Different concentrations of the guest material can control device efficiency, related to chromaticity of white emission and the origin of excited-state complexes occurring between hole-transporting carbazole units (PVK or G3-cbz DN) and electron-transporting oxadiazole (PBD). Two excited states (exciplex and electroplex) generated at the interfaces of PVK/G3-cbz DN and PBD result in competitive emission, exhibiting a broad band in the EL spectra.
| Original language | English |
|---|---|
| Pages (from-to) | 1010-1015 |
| Number of pages | 6 |
| Journal | ChemPhysChem |
| Volume | 12 |
| Issue number | 5 |
| DOIs | |
| State | Published - 4 Apr 2011 |
Keywords
- dendrimers
- electrochemistry
- electroplex
- exciplex
- luminescence