Quantum dot white and colored light-emitting devices
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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
37 Claims
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1-13. -13. (canceled)
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14. A white light emitting device comprising:
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a blue primary light source; a first layer in optical communication with the blue primary light source and comprising quantum dots of a material and size adapted to emit red secondary light; and a second layer in optical communication with said first layer and said primary light source and comprising quantum dots of a material and size adapted to emit green secondary light. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A white light emitting device comprising:
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a blue primary light source; and at least a first layer in optical communication with the blue 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 and a second population of quantum dots of a material and size adapted to emit green secondary light. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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Specification