Electroluminescent material comprising a doped conducting oxide
AssigneeHoneywell Inc.
InventorsCarol M. Ford, Randy J. Ramberg
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Abstract
An electroluminescent substance suitably comprising a conducting material such as a conducting oxide and at least one light-emitting dopant is disclosed. Preferred embodiments of the electroluminescent substance include rare earth dopants present within the conducting oxide such that the dopant materials generate light when electrically stimulated. Common dopant materials include erbium, ytterbium, praseodymium and other rare earth elements. The electroluminescent material is suitable for use, for example, in an electronic display or as a light source for many applications including Sagnac rotation sensors such as fiber optic gyroscopes.
Claims45
An electroluminescent device comprising:
- a substrate;
- a substantially phosphor free light emitting layer comprising:
- a conducting oxide coupled to the substrate;
- and
- a dopant material substantially distributed through the conducting oxide;
- and
- electrodes configured to apply an electrical potential across the light emitting layer;
- wherein the light emitting layer emits light having a frequency when an electrical potential is applied across the light emitting layer.
A method of generating light comprising:
- providing a light emitting substance consisting essentially of indium tin oxide and at least one dopant;
- and
- applying an electrical potential across the light emitting substance.
An electroluminescent device comprising:
- a substrate;
- a light emitting layer consisting essentially of:
- a conducting oxide coupled to the substrate;
- and
- at least one dopant material substantially distributed through the conducting oxide;
- and
- a potential applying device configured to apply an electrical potential to the light emitting layer;
- wherein the light emitting layer emits light having a frequency when an electrical potential is applied across the light emitting layer by the potential applying device.
Dependencies are inferred from the claim text.