QUANTUM DOT WHITE AND COLORED LIGHT-EMITTING DEVICES
First Claim
1. A white light emitting device comprising:
- a laser or UV primary light source; and
at least a first layer in optical communication with the primary light source and comprising a matrix including at least a first population of quantum dots of a material and size adapted to emit red secondary light, a second population of quantum dots of a material and size adapted to emit green secondary light, and a third population of quantum dots of a material and size adapted to emit blue secondary light.
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Accused Products
Abstract
A light-emitting device comprising a population of quantum dots (QDs) embedded in a host matrix and a primary light source which causes the QDs to emit secondary light and a method of making such a device. The size distribution of the QDs is chosen to allow light of a particular color to be emitted therefrom. The light emitted from the device may be of either a pure (monochromatic) color, or a mixed (polychromatic) color, and may consist solely of light emitted from the QDs themselves, or of a mixture of light emitted from the QDs and light emitted from the primary source. The QDs desirably are composed of an undoped semiconductor such as CdSe, and may optionally be overcoated to increase photoluminescence.
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Citations
23 Claims
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1. A white light emitting device comprising:
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a laser or UV primary light source; and at least a first layer in optical communication with the primary light source and comprising a matrix including at least a first population of quantum dots of a material and size adapted to emit red secondary light, a second population of quantum dots of a material and size adapted to emit green secondary light, and a third population of quantum dots of a material and size adapted to emit blue secondary light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification