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US 5,349,209 AGranted
Diamond/organic LED
AssigneeMotorola, Inc.
InventorsCurtis D. Moyer, Thomas B. Harvey, III, James E. Jaskie
Life of this patent
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Abstract
A light emitting diode including a carrier injection layer of semiconductor material, such as diamond, and a light emitting layer of electroluminescent organic material, such as PPV, positioned to form a diode junction therebetween. The semiconductor material being selected to have a wider bandgap than the organic material and the materials being further selected to minimize the discontinuities at the junction which would cause energy spikes.
Claims7
A diamond/organic light emitting diode comprising:
- a layer of polycrystalline diamond;
- and
- a layer of electroluminescent organic material positioned on a surface of the layer of polycrystalline diamond and forming a junction therebetween, the layer of polycrystalline diamond serving as a carrier injection layer and the layer of electroluminescent organic material emitting light in response to injection of carriers therein.
A diamond/organic light emitting diode comprising:
- an electron injection layer including polycrystalline N-type diamond;
- and
- a light emitting layer including a P-type electroluminescent organic material positioned on a surface of the electron injection layer and forming a junction therebetween.
Dependencies are inferred from the claim text.