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Blue emission from polymer light-emitting diodes using non-conjugated polymer blends with air-stable electrodes

Title data

Zhang, Chi ; von Seggern, Heinke ; Kraabel, B. ; Schmidt, Hans-Werner ; Heeger, A. J.:
Blue emission from polymer light-emitting diodes using non-conjugated polymer blends with air-stable electrodes.
In: Synthetic Metals. Vol. 72 (1995) Issue 2 . - pp. 185-188.
ISSN 0379-6779
DOI: https://doi.org/10.1016/0379-6779(94)02339-Z

Abstract in another language

By dispersing a non-conjugated luminescent polymer and an electron-transporting material, 2-(4-biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole (PBD), into a hole-transporting polymer, poly(9-vinylcarbazole) (PVK), we have achieved improved efficiencies for blue light-emitting diodes (LEDs) fabricated with a copolyester (CPE) containing isolated 1,2-dinaphthylethene units. Quantum efficiencies of the LEDs with the solid dispersion of CPE and PBD in PVK as electroluminescent layer and indium as the electron injection electrodes are about 0.1% photons per electron, better by factor of 102 than similar devices made with only the CPE. The LEDs turn on at about 30 V and have a peak emission wavelength in the blue at 485 nm.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry I
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry I > Chair Macromolecular Chemistry I - Univ.-Prof. Dr. Hans-Werner Schmidt
Result of work at the UBT: No
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 23 Apr 2015 07:36
Last Modified: 13 May 2015 05:07
URI: https://eref.uni-bayreuth.de/id/eprint/1587