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An efficient hole-transporting blue fluorophore 3,6-dipyrenyl-9-ethylcarbazole for undoped organic light-emitting devices
- Source :
- Synthetic Metals. 162:415-418
- Publication Year :
- 2012
- Publisher :
- Elsevier BV, 2012.
-
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 4.75 cd A −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.
- Subjects :
- Materials science
Fluorophore
business.industry
Carbazole
Mechanical Engineering
Bilayer
Metals and Alloys
Electroluminescence
Condensed Matter Physics
Fluorescence
Electronic, Optical and Magnetic Materials
chemistry.chemical_compound
chemistry
Mechanics of Materials
Materials Chemistry
OLED
Optoelectronics
Luminous efficacy
business
Common emitter
Subjects
Details
- ISSN :
- 03796779
- Volume :
- 162
- Database :
- OpenAIRE
- Journal :
- Synthetic Metals
- Accession number :
- edsair.doi...........4d553ddf2b965d98890c8ea8732db068