Nanocrystal-metal oxide composite, methods of manufacture thereof and articles comprising the same
AssigneeSamsung Electronics Co., Ltd.
InventorsShin Ae Jun, Eun Joo Jang
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Abstract
A method for preparing nanocrystal-metal oxide composites with long-term stability is disclosed herein. The nanocrystals are mixed with a first metal oxide precursor, a solvent and water to form a sol-gel composite. The sol-gel composite is pulverized to form a sol-gel composite powder. The sol-gel composite is then reacted with a second metal oxide precursor. The nanocrystal-metal oxide composites have a high luminescence efficiency and uniform emission wavelengths. The nanocrystal-metal oxide composite is used to manufacture a light-emitting device.
Claims15
A method for preparing a nanocrystal-metal oxide composite, the method comprising:
- mixing nanocrystals, a first metal oxide precursor, a solvent, and water to form a solution,
- drying the solution, followed by a thermal treatment to form a sol-gel composite,
- pulverizing the sol-gel composite to obtain a sol-gel composite powder,
- mixing the sol-gel composite powder with a second metal oxide precursor to form a reaction mixture at room temperature,
- allowing the reaction mixture at an elevated temperature to react,
- pulverizing the resultant, and
- thermally treating the pulverized resultant to obtain a nanocrystal-metal oxide composite.
A method for preparing a nanocrystal-metal oxide composite, the method comprising:
- mixing nanocrystals, a first metal oxide precursor, a solvent, and water to form a solution,
- drying the solution, followed by a thermal treatment to form a sol-gel composite,
- pulverizing the sol-gel composite to obtain a sol-gel composite powder,
- mixing the sol-gel composite powder with a second metal oxide precursor to form a reaction mixture at room temperature,
- allowing the reaction mixture at an elevated temperature to react,
- pulverizing the resultant, and
- thermally treating the pulverized resultant to obtain a nanocrystal-metal oxide composite,
- wherein the second metal oxide precursor has at least one organic functional group, and
- wherein the first metal oxide precursor and the second metal oxide precursor are independently selected from different materials.
A method for preparing a nanocrystal-metal oxide composite, the method comprising:
- mixing nanocrystals, a first metal oxide precursor, a solvent, and water to form a solution,
- drying the solution, followed by a thermal treatment to form a sol-gel composite,
- pulverizing the sol-gel composite to obtain a sol-gel composite powder,
- mixing the sol-gel composite powder with a second metal oxide precursor, which is in a liquid or gas phase, to form a reaction mixture at room temperature,
- allowing the reaction mixture at an elevated temperature to react,
- pulverizing the resultant, and
- thermally treating the pulverized resultant to obtain a nanocrystal-metal oxide composite,
- wherein the second metal oxide precursor has at least one organic functional group.
Dependencies are inferred from the claim text.