Solid state light-emitting device
AssigneeMassachusetts Institute of Technology
InventorsMichael F. Rubner, Erik S. Handy, Amlan J. Pal
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Abstract
A solid state light-emitting device having a high maximum luminance, a high external efficiency, and a low operating voltage is described. The device can include a solid layer, a first inert electrode, and a second inert electrode. The solid layer includes a metal complex and has a first surface and a second surface. The first inert electrode contacts the first surface of the solid layer. The second inert electrode contacts the second surface of the solid layer. The device can have a luminance of at least 50 cd/m2 at a potential of between 2.5 and 5.0 V.
Claims42
A solid state light-emitting device comprising:
- a homogeneous non-solvent-swollen-charged solid layer including a metal complex, said solid layer having a first surface and a second surface;
- a first inert electrode in contact with said first surface;
- and
- a second inert electrode in contact with said second surface;
- wherein said device has a luminance of at least 50 cd/m2 at a potential of between 2.5 and 5.0V.
A solid state light-emitting device comprising:
- a solid layer including a metal complex, said solid layer having a first surface and a second surface, wherein the metal complex is a bipyridine complex and the bipyridine has a hydroxymethyl substituent, a C1-18 alkoxycarbonyl substituent, or a hydroxy substituent;
- a first inert electrode in contact with said first surface;
- and
- a second inert electrode in contact with said second surface;
- wherein said device has a luminance of at least 50 cd/M2 at a potential of between 2.5 and 5.0 V.
A solid state light-emitting device comprising:
- a solid layer including a metal complex, said solid layer having a first surface and a second surface, wherein the metal complex is non-polymeric;
- a first inert electrode in contact with said first surface;
- and
- a second inert electrode in contact with said second surface;
- wherein said device has a luminance of at least 50 cd/m2 at a potential of between 2.5 and 5.0 V.
A solid state light emitting device comprising a solid layer consisting essentially of a non-polymeric ruthenium bipyridine complex.
A solid state light emitting device comprising a solid layer consisting essentially of a ruthenium bipyridine complex, wherein the bipyridine has a hydroxymethyl substituent, a C1∝18 alkoxycarbonyl substituent, or a hydroxy substituent.
A solid state light emitting device comprising a solid layer including a non-polymeric metal bipyridine complex, said device having a luminance of at least 50 cd/m2 at a potential of between 2.5 and 5.0 V.
A method of generating light comprising:
- applying a light-generating potential of between 2.5 and 5.0 V across a first inert electrode and a second inert electrode of a solid state light-emitting device including a solid layer including a metal complex, said solid layer having a first surface and a second surface, said first inert electrode contacting said first surface, and said second inert electrode contacting with said second surface;
- and
- generating light from the device having a luminance of at least 50 cd/m2.
A method of generating light comprising:
- applying a light-generating potential of between 2.5 and 5.0 V across a first inert electrode and a second inert electrode of a solid state light-emitting device including a solid layer including a metal complex, wherein the metal complex is non-polymeric, said solid layer having a first surface and a second surface, said first inert electrode contacting said first surface, and said second inert electrode contacting with said second surface;
- and
- generating light from the device having a luminance of at least 50 cd/m2.
A solid state light-emitting device comprising:
- an encapsulated solid layer including a metal complex, said solid layer having a first surface and a second surface;
- a first inert electrode in contact with said first surface;
- and
- a second inert electrode in contact with said second surface;
- wherein said device has a luminance of at least 50 cd/m2 at a potential of between 2.5 and 5.0 V.
Dependencies are inferred from the claim text.