METHODS OF FORMING QUANTUM DOTS OF GROUP IV SEMICONDUCTOR MATERIALS
First Claim
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1. A method of forming a quantum dot, comprising:
- providing a particle that includes a semiconductor material Y selected from the group consisting of Si and Ge; and
applying sound energy and light energy to said particle to form a quantum dot that exhibits photoluminescence with a quantum efficiency that is greater than 10 percent, said quantum dot including a core, said core including Y.
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Abstract
The invention relates to a method of forming a quantum dot. A particle that includes a semiconductor material Y selected from the group consisting of Si and Ge is provided. Sound energy and light energy is applied, to the particle to form a quantum dot. The quantum dot exhibits photoluminescence with a quantum efficiency that is greater than 10 percent. The quantum dot includes a core, and the core includes Y.
198 Citations
25 Claims
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1. A method of forming a quantum dot, comprising:
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providing a particle that includes a semiconductor material Y selected from the group consisting of Si and Ge; and
applying sound energy and light energy to said particle to form a quantum dot that exhibits photoluminescence with a quantum efficiency that is greater than 10 percent, said quantum dot including a core, said core including Y. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of forming quantum dots, comprising:
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providing particles having a first peak size, said particles including a semiconductor material Y selected from the group consisting of Si and Ge; and
applying light energy to said particles for a time sufficient to form quantum dots having a second peak size, said second peak size being smaller than said first peak size. - View Dependent Claims (11, 12, 13)
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14. A method of forming a quantum dot, comprising:
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reacting, in a reaction medium, a source of a semiconductor material Y selected from the group consisting of Si and Ge with a reducing agent to form a particle that includes a core, said core including Y, said reducing agent being selected from the group consisting of Group IIA metals, transition metals, and lanthanides; and
reacting said particle with a source of surface ligands to form a ligand layer surrounding said core to form a quantum dot, said ligand layer including at least one surface ligand. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification