Microcavity OLEDs for lighting
AssigneeUniversity of Florida Research Foundation, Inc.
InventorFranky So
Life of this patent
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Abstract
Various methods and systems are provided for related to organic light emitting diodes (OLEDs) having a microcavity In one embodiment, a white-light source includes a first microcavity organic light emitting diode (OLED) configured to emit a narrow spectrum of blue light, a second microcavity OLED configured to emit a narrow spectrum of green light, and a third microcavity OLED configured to emit a narrow spectrum of red light In another embodiment, a light source includes a plurality of OLEDs disposed on a glass substrate Each of the OLEDs is configured to emit light in substantially orthogonal to the glass substrate in a predefined spectrum Each of the OLEDs includes a semi-reflecting mirror, and an emitting layer, where the emitting layer in each OLED corresponds to a respective color of light emitted by the OLED.
Claims20
A white-light source, comprising:
- a first microcavity organic light emitting diode (OLED) configured to emit a narrow spectrum of blue light;
- a second microcavity OLED configured to emit a narrow spectrum of green light;
- and
- a third microcavity OLED configured to emit a narrow spectrum of red light,
- wherein the blue light emitted by the first OLED, green light emitted by the second OLED, and red light emitted by the third OLED combine to produce white illuminating light with a color rendering index that is greater than 80,
- wherein each of the microcavity OLEDs comprises:
- an electron transport layer formed between a cathode and a first side of an emitting layer;
- and
- a hole transport layer formed between a second side of the emitting layer and an indium tin oxide (ITO) layer,
- wherein the hole transport layer comprises a 1,1-bis[(di -4-tolylamino)phenyl]cyclohexane (TAPC) layer adjacent to the emitting layer and a poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) layer adjacent to the ITO layer.
A white-light source, comprising:
- a first microcavity organic light emitting diode (OLED) configured to emit a narrow spectrum of blue light;
- a second microcavity OLED configured to emit a narrow spectrum of green light;
- and
- a third microcavity OLED configured to emit a narrow spectrum of red light,
- wherein the blue light emitted by the first OLED, green light emitted by the second OLED, and red light emitted by the third OLED combine to produce white illuminating light with a color rendering index that is greater than 80,
- wherein each of the microcavity OLEDs comprises:
- an electron transport layer formed between a cathode and a first side of an emitting layer;
- and
- a hole transport layer formed between a second side of the emitting layer and an indium tin oxide (ITO) layer,
- wherein the emitting layer of the first microcavity OLED includes 3,5′-N,N′-dicarbazolebenzene (“mCP”):Iridium(III)bis[(4,6-di-fluorophenyl)-pyridinato-N,C2′]picolinate (“Flrpic”).
A white-light source, comprising:
- a first microcavity organic light emitting diode (OLED) configured to emit a narrow spectrum of blue light;
- a second microcavity OLED configured to emit a narrow spectrum of green light;
- and
- a third microcavity OLED configured to emit a narrow spectrum of red light,
- wherein the blue light emitted by the first OLED, green light emitted by the second OLED, and red light emitted by the third OLED combine to produce white illuminating light with a color rendering index that is greater than 80,
- wherein each of the microcavity OLEDs comprises:
- an electron transport layer formed between a cathode and a first side of an emitting layer;
- and
- a hole transport layer formed between a second side of the emitting layer and an indium tin oxide (ITO) layer,
- wherein the emitting layer of the second microcavity OLED includes 3,5′-N,N′-dicarbazolebenzene (“mCP”) doped with fac-tris(2-phenylpyridinato)iridium(III) (“Ir(ppy)3”).
A white-light source, comprising:
- a first microcavity organic light emitting diode (OLED) configured to emit a narrow spectrum of blue light;
- a second microcavity OLED configured to emit a narrow spectrum of green light;
- and
- a third microcavity OLED configured to emit a narrow spectrum of red light,
- wherein the blue light emitted by the first OLED, green light emitted by the second OLED, and red light emitted by the third OLED combine to produce white illuminating light with a color rendering index that is greater than 80,
- wherein each of the microcavity OLEDs comprises:
- an electron transport layer formed between a cathode and a first side of an emitting layer;
- and
- a hole transport layer formed between a second side of the emitting layer and an indium tin oxide (ITO) layer,
- wherein the emitting layer of the third microcavity OLED includes 3,5′-N,N′-dicarbazolebenzene (“mCP”) doped with tris(1-phenylisoquinoline)iridium (“Ir(piq)3”).
Dependencies are inferred from the claim text.