Nanoparticles
First Claim
1. A method for producing a nanoparticle comprised of a core comprising a core semiconductor material, a first layer comprising a first semiconductor material provided on said core and a second layer comprising a second semiconductor material provided on said first layer, said core semiconductor material being different to said first semiconductor material and said first semiconductor material being different to said second semiconductor material, the method comprising:
- effecting conversion of a nanoparticle core precursor composition to the material of the nanoparticle core;
depositing said first layer on said core; and
depositing said second layer on said first layer, said core precursor composition comprising a first precursor species containing a first ion to be incorporated into the growing nanoparticle core and a separate second precursor species containing a second ion to be incorporated into the growing nanoparticle core,said conversion being effected in the presence of a molecular cluster compound under conditions permitting seeding and growth of the nanoparticle core.
1 Assignment
0 Petitions
Accused Products
Abstract
Method for producing a nanoparticle comprised of core, first shell and second shell semiconductor materials. Effecting conversion of a core precursor composition comprising separate first and second precursor species to the core material and then depositing said first and second shells. The conversion is effected in the presence of a molecular cluster compound under conditions permitting seeding and growth of the nanoparticle core. Core/multishell nanoparticles in which at least two of the core, first shell and second shell materials incorporate ions from groups 12 and 15, 14 and 16, or 11, 13 and 16 of the periodic table. Core/multishell nanoparticles in which the second shell material incorporates at least two different group 12 ions and group 16 ions. Core/multishell nanoparticles in which at least one of the core, first and second semiconductor materials incorporates group 11, 13 and 16 ions and the other semiconductor material does not incorporate group 11, 13 and 16 ions.
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Citations
68 Claims
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1. A method for producing a nanoparticle comprised of a core comprising a core semiconductor material, a first layer comprising a first semiconductor material provided on said core and a second layer comprising a second semiconductor material provided on said first layer, said core semiconductor material being different to said first semiconductor material and said first semiconductor material being different to said second semiconductor material, the method comprising:
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effecting conversion of a nanoparticle core precursor composition to the material of the nanoparticle core; depositing said first layer on said core; and depositing said second layer on said first layer, said core precursor composition comprising a first precursor species containing a first ion to be incorporated into the growing nanoparticle core and a separate second precursor species containing a second ion to be incorporated into the growing nanoparticle core, said conversion being effected in the presence of a molecular cluster compound under conditions permitting seeding and growth of the nanoparticle core. - View Dependent Claims (2, 4, 6, 7, 10, 17, 18, 20, 21, 22, 24, 26, 27, 29, 42, 51, 52, 53)
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3. (canceled)
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5. (canceled)
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8-9. -9. (canceled)
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11-16. -16. (canceled)
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19. (canceled)
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23. (canceled)
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25. (canceled)
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28. (canceled)
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30-41. -41. (canceled)
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43-50. -50. (canceled)
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54. A nanoparticle comprising a core comprising a core semiconductor material, a first layer comprising a first semiconductor material provided on said core and a second layer comprising a second semiconductor material provided on said first layer, said core semiconductor material being different to said first semiconductor material and said first semiconductor material being different to said second semiconductor material, wherein:
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a) at least two of the core, first shell and second shell materials incorporate ions from groups 12 and 15 of the periodic table, groups 14 and 16 of the periodic table, or groups 11, 13 and 16 of the periodic table;
orb) the second shell material incorporates ions of at least two different elements from group 12 of the periodic table and ions from group 16 of the periodic table;
orc) at least one of the core, first and second semiconductor materials incorporates ions from groups 11, 13 and 16 of the periodic table and at least one other of the core, first and second semiconductor materials is a semiconductor material not incorporating ions from groups 11, 13 and 16 of the periodic table. - View Dependent Claims (55, 56, 59, 60, 67)
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57-58. -58. (canceled)
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61-66. -66. (canceled)
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68-79. -79. (canceled)
Specification