Field induced polymer electroluminescent (FIPEL) device
AssigneeWake Forest University
InventorDavid L. Carroll
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Abstract
In one aspect, optoelectronic devices are described herein. In some embodiments, an optoelectronic device described herein includes a radiation transmissive first electrode, a second electrode, a light emitting organic layer disposed between the first electrode and the second electrode, a dielectric layer disposed between the light emitting organic layer and the first electrode and/or second electrode, and a phosphor layer disposed in an optical path of the light emitting organic layer, wherein the light emitting organic layer includes a singlet emitter phase and a triplet emitter phase.
Claims23
A field induced polymer electroluminescent (FIPEL) device comprising:
- a radiation transmissive first electrode;
- a second electrode;
- a light emitting organic layer disposed between the first electrode and the second electrode;
- a dielectric layer disposed between the light emitting organic layer and the second electrode;
- and
- a phosphor layer disposed in an optical path of the light emitting organic layer,
- wherein the light emitting organic layer comprises one or more conjugated polymers or oligomers, small molecules or mixtures thereof, and
- wherein the one or more conjugated polymers or oligomers comprise a conjugated polymer or oligomer comprising at least two repeat units selected from the group consisting of repeating units A, B and C:
- wherein represents points of attachment in the polymer chain or oligomer chain, X is selected from the group consisting of S, O, Se and NR5 and R1, R2, R5, R6, R7, R8 and R9 are independently selected from the group consisting of hydrogen, C1-20 alkyl, C2-20 alkenyl, C8-12 alkyl and C8-12 alkenyl and R3 and R4 are independently selected from the group consisting of aryl and heteroaryl, wherein the alkyl and alkenyl of R1, R2, R5, R6, R7, R8 and R9 and the aryl and heteroaryl of R3 and R4 are optionally independently substituted one or more times with a substituent selected from the group consisting of -alkyl, -alkenyl, -aryl, -heteroaryl, -alkyl-aryl, -alkyl-heteroaryl, -alkenyl-aryl and -alkenyl-heteroaryl.
A field induced polymer electroluminescent (FIPEL) device comprising:
- a radiation transmissive first electrode;
- a second electrode;
- a light emitting organic layer disposed between the first electrode and the second electrode;
- a dielectric layer disposed between the light emitting organic layer and the second electrode;
- and
- a phosphor layer disposed in an optical path of the light emitting organic layer,
- wherein the light emitting organic layer comprises one or more conjugated polymers or oligomers, small molecules or mixtures thereof, and
- wherein the one or more conjugated polymers or oligomers comprises a structural unit of Formula (V):
- wherein represents points of attachment in the polymer or oligomer chain and R16 and R17 are independently selected from the group consisting of hydrogen, C1-20 alkyl, C2-20 alkenyl, C8-12 alkyl and C8-12 alkenyl and wherein the alkyl and alkenyl of R16 and R17 are optionally independently substituted one or more times with a substituent selected from the group consisting of -alkyl, -alkenyl, -aryl, -heteroaryl, -alkyl-aryl, -alkyl-heteroaryl, -alkenyl-aryl and -alkenyl-heteroaryl.
A field induced polymer electroluminescent (FIPEL) device comprising:
- a radiation transmissive first electrode;
- a second electrode;
- a light emitting organic layer disposed between the first electrode and the second electrode;
- a dielectric layer disposed between the light emitting organic layer and the second electrode;
- and
- a phosphor layer disposed in an optical path of the light emitting organic layer,
- wherein the phosphor layer is not positioned between the radiation transmissive first electrode and the second electrode.
A field induced polymer electroluminescent (FIPEL) device comprising:
- a radiation transmissive first electrode;
- a second electrode;
- a light emitting organic layer disposed between the first electrode and the second electrode;
- a dielectric layer disposed between the light emitting organic layer and the second electrode;
- and
- a phosphor layer disposed in an optical path of the light emitting organic layer,
- wherein the absorption profile of the phosphor layer at least partially overlaps the emission profile of the light emitting organic layer.
Dependencies are inferred from the claim text.