Quantum dot white and colored light emitting diodes
First Claim
1. A method of producing an electronic device, comprising:
- providing at least one population of quantum dots of a selected size distribution;
disposing a coating on a surface of the dots that is adapted to allow the dots to disperse in a host matrix;
dispersing the quantum dots in said host matrix; and
providing a solid state primary light source capable of causing the quantum dots to photoluminesce secondary light of a color characteristic of their size distribution.
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Abstract
An electronic device comprising a population of quantum dots embedded in a host matrix and a primary light source which causes the dots to emit secondary light of a selected color, and a method of making such a device. The size distribution of the quantum dots 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 dots themselves, or of a mixture of light emitted from the dots and light emitted from the primary source. The dots desirably are composed of an undoped semiconductor such as CdSe, and may optionally be overcoated to increase photoluminescence.
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Citations
11 Claims
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1. A method of producing an electronic device, comprising:
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providing at least one population of quantum dots of a selected size distribution;
disposing a coating on a surface of the dots that is adapted to allow the dots to disperse in a host matrix;
dispersing the quantum dots in said host matrix; and
providing a solid state primary light source capable of causing the quantum dots to photoluminesce secondary light of a color characteristic of their size distribution. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification