TITLE

Bright red organic light-emitting diodes doped with a fluorescent dye

AUTHOR(S)
Mitsuya, Masayuki; Suzuki, Takayuki; Koyama, Toshiki; Shirai, Hirofusa; Taniguchi, Yoshio; Satsuki, Makoto; Suga, Sadaharu
PUB. DATE
November 2000
SOURCE
Applied Physics Letters;11/13/2000, Vol. 77 Issue 20
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We have evaluated a synthetic red fluorescent dye, 6-methyl-3-[3-(1,1,6,6-tetramethyl-10-oxo2,3,5,6-tetrahydro-1H,4H,10H-11 -oxa-3a-aza-benzo[de]anthracen-9-yl)-acryloyl]-pyran-2,4-dione (AAAP), as a dopant for an organic light-emitting diode (LED). Bright emission of a good red (maximum luminance: 5600 cd/m2, chromaticity coordinates: x=0.63, y=0.36) was obtained. The device consisted of ITO/TPD(50 nm)/Alq[sub 3] doped with AAAP(1.5 mol %,15 nm)/bOXDF(20 nm)/Alq[sub 3](25 nm)/Mg:Ag (ITO: indium tin oxide, TPD: N, N[sup ′]-diphenyl- N,N′-di(3-methylphenyl)-1, 1′biphenyl-4,4′-diamine, Alq[sub 3]: tris (8-hydroxyquinolinato)-aluminum (III), bOXDF:2,2-bis[5-(4-biphenyl)-1,3,4-oxadiazole-2-yl-4,1 -phenylene]-hexafluoropropane). The bands of fluorescence of the Alq[sub 3] host and of absorption of the AAAP dopant overlap in an advantageous way, and insertion of the bOXDF layer between the emission layer, doped with AAAP, and Alq[sub 3] layer, made for a device with good properties. © 2000 American Institute of Physics.
ACCESSION #
4413850

 

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