Preparation method for doped metal oxide, and light-emitting device comprising doped metal oxide
AssigneeTcl Technology Group Corporation
InventorKaimin CHEN
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Abstract
Disclosed are a preparation method for a doped metal oxide, and a light-emitting device including the doped metal oxide. The preparation method for the doped metal oxide uses a difference of solubility products between a hydroxide of a second metal element and a hydroxide of a first metal element in water to regulate a number of atoms of the second metal element doped into a crystal structure in different stages, such that the second metal element has a target differentiated distribution in the doped metal oxide to achieve a target energy level structure.
Claims20
A preparation method for a doped metal oxide, comprising steps of:
- providing a first solution comprising a first metal salt, a second solution comprising a second metal salt, and a third solution comprising an alkali, wherein the first metal salt comprises a first metal element, and the second metal salt comprises a second metal element;
- and
- mixing the second solution, the third solution, water and the first solution for a reaction to obtain a doped metal oxide comprising the first metal element and the second metal element;
- wherein a solubility product of a hydroxide of the second metal element in water is greater than a solubility product of a hydroxide of the first metal element in water at a same temperature.
A doped metal oxide, wherein the doped metal oxide is prepared by a preparation method as follows:
- providing a first solution comprising a first metal salt, a second solution comprising a second metal salt, and a third solution comprising an alkali, wherein the first metal salt comprises a first metal element, and the second metal salt comprises a second metal element;
- and
- mixing the second solution, the third solution, water and the first solution for a reaction to obtain a doped metal oxide comprising the first metal element and the second metal element;
- wherein a solubility product of a hydroxide of the second metal element in water is greater than a solubility product of a hydroxide of the first metal element in water at a same temperature.
A light-emitting device, comprising:
- an anode;
- a cathode disposed opposite the anode;
- an emission material layer disposed between the anode and the cathode;
- and
- an electron functional layer disposed between the cathode and the emission material layer;
- wherein a material of the electron functional layer comprises a doped metal oxide prepared by a preparation method as follows:
- providing a first solution comprising a first metal salt, a second solution comprising a second metal salt, and a third solution comprising an alkali, wherein the first metal salt comprises a first metal element, and the second metal salt comprises a second metal element;
- and
- mixing the second solution, the third solution, water and the first solution for a reaction to obtain a doped metal oxide comprising the first metal element and the second metal element;
- wherein a solubility product of a hydroxide of the second metal element in water is greater than a solubility product of a hydroxide of the first metal element in water at a same temperature.
Dependencies are inferred from the claim text.