Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10609323 | European Polymer Journal | 2005 | 4 Pages |
Abstract
The PL and EL spectra of poly(N-vinylcarbazole) (PVK) : 2,9-dimethyl-4,7-diphenyl-1, 10-phenanthroline (BCP) (1:1 w/w) film were found completely different. The PL spectrum is a single peak at 415Â nm that originates from excitons emission from PVK, and the tail of the spectrum is suggested to be excimer emission from BCP molecules. However, a new emission at 595Â nm was found in the EL spectra of devices ITO/PEDOT:PSS(50Â nm)/PVK:BCP(1:1)(100Â nm)/Al. After aggregate, exciplex and product of electrochemical reaction were ruled out, the new emission was proposed to be electroplex emission that occurred between PVK and BCP molecules. Under high voltage, only electroplex emission can be observed in the EL spectra.
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Authors
Yuanmin Wang, Feng Teng, Zheng Xu, Yanbing Hou, Yongsheng Wang, Xurong Xu,