Title:
Highly efficient inverted top-emitting green phosphorescent organic light-lightemitting diodes on glass and flexible substrates
Highly efficient inverted top-emitting green phosphorescent organic light-lightemitting diodes on glass and flexible substrates
Files
Author(s)
Najafabadi, E.
Knauer, K. A.
Haske, Wojciech
Fuentes-Hernandez, Canek
Kippelen, Bernard
Knauer, K. A.
Haske, Wojciech
Fuentes-Hernandez, Canek
Kippelen, Bernard
Advisor(s)
Editor(s)
Collections
Supplementary to
Permanent Link
Abstract
Green phosphorescent inverted top-emitting organic light-emitting diodes with high current efficacy and luminance are demonstrated on glass and polyethersulfone (PES) substrates coated with polyethylene dioxythiophene-polystyrene sulfonate (PEDOT:PSS). The bottom cathode is an aluminum/lithium fluoride bilayer that injects electrons efficiently into an electron transport layer of 1,3,5-tri(m-pyrid-3-yl-phenyl)benzene (TpPyPB). The cathode is found to be highly sensitive to the exposure of trace amounts of O₂ and H₂O. A high current efficacy of 96.3 cd/A is achieved at a luminance of 1387 cd/m² when an optical outcoupling layer of N,N′-Di-[(1-naphthyl)-N,N′-diphenyl]-(1,1′-biphenyl)-4,4′-diamine (α-NPD) is deposited on the anode.
Sponsor
Date Issued
2012-07
Extent
Resource Type
Text
Resource Subtype
Article