Quantum dots of group IV semiconductor materials
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Accused Products
Abstract
The invention relates to a quantum dot. The quantum dot comprises a core including a semiconductor material Y selected from the group consisting of Si and Ge. The quantum dot also comprises a shell surrounding the core. The quantum dot is substantially defect free such that the quantum dot exhibits photoluminescence with a quantum efficiency that is greater than 10 percent.
142 Citations
46 Claims
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1-12. -12 (Canceled)
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13. A quantum dot comprising:
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a) a core including a semiconductor material Y selected from the group consisting of Si and Ge;
b) a shell surrounding said core; and
c) at least one surface ligand coupled to said shell, said quantum dot being substantially defect free such that said quantum dot exhibits photoluminescence with a quantum efficiency that is greater than 10 percent. - View Dependent Claims (14, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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15-20. -20 (Canceled)
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21. A quantum dot comprising:
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a) a core including a semiconductor material Y selected from the group consisting of Si and Ge;
b) a ligand layer surrounding said core, said ligand layer including a plurality of surface ligands; and
c) a shell positioned between said core and said ligand layer and surrounding said core, said shell including an oxide YOn with n being between approximately 0 and 2, said quantum dot exhibiting photoluminescence with a quantum efficiency that is greater than 10 percent. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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Specification