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An efficient hole-transporting blue fluorophore 3,6-dipyrenyl-9-ethylcarbazole for undoped organic light-emitting devices
- Source :
-
Synthetic Metals . Apr2012, Vol. 162 Issue 5/6, p415-418. 4p. - Publication Year :
- 2012
-
Abstract
- Abstract: A new blue-emitting carbazole derivative, 3,6-dipyrenyl-9-ethylcarbazole (DPEC), has been designed and synthesized for applications in organic light-emitting devices (OLEDs). Undoped DPEC-based OLEDs give a saturated blue electroluminescence with Commission Internationale de L’Eclairage 1931 coordinates of (0.15, 0.18), and possess high luminous efficiency of 4.75cdA−1. On the other hand, DPEC can also function as a hole-transporting layer (HTL). In particular, by replacing N,N′-diphenyl-1,1′-biphenyl-4,4′-diamine (NPB) as HTL, a simplified bilayer device demonstrated good performance, comparable to that of the trilayer device. This good device performance illustrates that DPEC is a promising candidate as a blue hole-transporting emitter. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 03796779
- Volume :
- 162
- Issue :
- 5/6
- Database :
- Academic Search Index
- Journal :
- Synthetic Metals
- Publication Type :
- Academic Journal
- Accession number :
- 73767074
- Full Text :
- https://doi.org/10.1016/j.synthmet.2011.12.030