Eur. Phys. J. Appl. Phys. 51, 33210 (2010)
https://doi.org/10.1051/epjap/2010111

Influence of p-isopropenylcalixarenestyrene copolymer buffer layer over Alq₃ based OLEDs

¹ Central Laboratory of Photoprocesses “Acad. J. Malinowski”, Bulgarian Academy of Sciences, “Acad. G. Bonchev” str., bl. 109, 1113 Sofia, Bulgaria
² Department of Polymer Engineering, Faculty of Chemistry Technology, University of Chemical Technology and Metallurgy, Kliment Ohridsky Boulevard 8, 1756 Sofia, Bulgaria

Corresponding author: Petia@clf.bas.bg

Received: 12 October 2009
Revised: 18 March 2010
Accepted: 11 June 2010
Published online: 2 September 2010

Abstract

The characteristics of organic light-emitting devices based on aluminum tris-(8-hydroxy-quinoline) (Alq₃), N,N'-bis(3-methylphenyl)-N,N'-diphenylbenzidine (TPD) with novel p-isopropenyl-calix[8]arenestyrene copolymer buffer layer and Al cathode were investigated. The devices with TPD/Alq₃/Al were also fabricated in the same way for comparison. The p-isopropenylcalix[8]arenestyrene copolymer used as buffer layer greatly improved the performance of the device and increased the device efficiency and stability.