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 |
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Pages (from-to) | 1010-1015 |
Number of pages | 6 |
Journal | ChemPhysChem |
Volume | 12 |
Issue number | 5 |
DOIs | |
Publication status | Published - 2011 Apr 4 |
Externally published | Yes |
Keywords
- dendrimers
- electrochemistry
- electroplex
- exciplex
- luminescence
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Physical and Theoretical Chemistry