Organic light emitting devices containing a metal complex of 5-hydroxy-quinoxaline as a host material
AssigneesThe Trustees of Princeton University, University of Southern California
InventorsMark E. Thompson, Stephen R. Forrest, Paul E. Burrows, Yujian You, Andrei Shoustikov
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Abstract
The present invention is directed to organic light emitting devices comprised of an electroluminescent layer containing a host material comprised of a metal complex of (5-hydroxy)quinoxaline: ##STR1## wherein M is Al, Ga, In, Zn or Mg, with n=3, if M is Al, Ga or In and n=2, if M is Zn or Mg, and to a method for fabricating such devices. Further disclosed for use in the electroluminescent layer of organic light emitting devices are dopant materials comprised of a bisphenyl-squarilium compound, an indigo dye compound or a fullerene compound.
Claims39
An organic light emitting device for producing electroluminescence comprising:
- a heterostructure for producing electroluminescence, said heterostructure having an emissive layer comprised of a host material and a dopant, said host material being comprised of a metal complex of (5-hydroxy)quinoxaline having the chemical structure of formula I:
- ##STR12## wherein M is Al, Ga, In, Zn or Mg, with n=3, if M is Al, Ga or In and n=2, if M is Zn or Mg.
An organic light emitting device for producing electroluminescence comprising:
- a heterostructure for producing electroluminescence, said heterostructure having an emissive layer comprised of a host material and a dopant, said dopant being comprised of a compound of formula III:
- ##STR19## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are, independently of each other, an unsubstituted or substituted alkyl, aryl or heterocycle, and R.sub.5 and R.sub.6 are, independently of each other, an unsubstituted or substituted alkyl, aryl, OH or NH.sub.2.
An organic light emitting device for producing electroluminescence comprising:
- a heterostructure for producing electroluminescence, said heterostructure having an emissive layer comprised of a host material and a dopant, said dopant being comprised of an indigo dye compound of formula V:
- ##STR22## wherein X=NH, NR.sub.9, S, Se, Te, or O, wherein R.sub.9 is alkyl or phenyl, and R.sub.7 and R.sub.8 are, independently of each other, an unsubstituted or substituted alkyl or aryl group, a .PI.-electron donor group or a .PI.-electron acceptor group.
An organic light emitting device for producing electroluminescence comprising:
- a heterostructure for producing electroluminescence, said heterostructure having an emissive layer comprised of a host material and a dopant, said dopant being comprised of a fullerene compound.
A method of fabricating an organic light emitting device for producing electroluminescence comprising:
- fabricating a heterostructure for producing electroluminescence, wherein the fabrication process includes the step of depositing a layer comprised of a host material and a dopant, said host material being comprised of a metal complex of (5-hydroxy)quinoxaline having the chemical structure of formula I:
- ##STR24## wherein M is Al, Ga, In, Zn or Mg, with n=3, if M is Al, Ga or In and n=2, if M is Zn or Mg.
A method of fabricating an organic light emitting device for producing electroluminescence comprising:
- fabricating a heterostructure for producing electroluminescence, wherein the fabrication process includes the step of depositing a layer comprised of a host material and a dopant, said dopant being comprised of a compound of formula III:
- ##STR29## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are, independently of each other, an unsubstituted or substituted alkyl, aryl or heterocycle, and R.sub.5 and R.sub.6 are, independently of each other, an unsubstituted or substituted alkyl, aryl, OH or NH.sub.2.
A method of fabricating an organic light emitting device for producing electroluminescence comprising:
- fabricating a heterostructure for producing electroluminescence, wherein the fabrication process includes the step of depositing a layer comprised of a host material and a dopant, said dopant being comprised of a indigo dye compound of formula V:
- ##STR32## wherein X=NH, NR.sub.9, S, Se, Te, or O, wherein R.sub.9 is alkyl or phenyl, and R.sub.7 and R.sub.8 are, independently of each other, an unsubstituted or substituted alkyl or aryl group, a .PI.-electron donor group or a .PI.-electron acceptor group.
A method of fabricating an organic light emitting device for producing electroluminescence comprising:
- fabricating a heterostructure for producing electroluminescence, wherein the fabrication process includes the step of depositing a layer comprised of a host material and a dopant, said dopant being comprised of a fullerene compound.
Dependencies are inferred from the claim text.