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US 8,562,939 B2Granted
Semiconductor nanocrystal synthesis using a catalyst assisted two-phase reaction
AssigneeEvident Technologies
InventorAdam Peng
Life of this patent
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Abstract
A method for producing a high yield of high quality, low size distribution, and size tunable semiconductor nanocrystals. The method produces III-V, II-VI, II-V, IV-VI, IV, ternary, quarternary, and quinary semiconductor nanocrystals (quantum dots) using a catalyst assisted two-phase reaction.
Claims13
A method of synthesizing semiconductor nanocrystals comprising:
- reacting a metal chalcogenide with an organic acid to form a metal-acid complex precursor and water;
- wherein the metal chalcogenide is not completely dissolved in the organic acid,
- adding to the metal-acid complex precursor and water a solution containing Se:TBP (selenium dissolved in tributylphosphine), Se:TOPO (selenium dissolved in trioctylphosphine oxide), or both, to form nanocrystal seeds and an acidic ion;
- and growing a plurality of semiconductor nanocrystals from the nanocrystal seeds, wherein the acidic ion combines with a catalyst to reform the organic acid.
1 more element
Dependencies are inferred from the claim text.