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Functional molybdate film and its prepn

A molybdate and thin film technology, applied in the field of wet chemical method oxide thin film preparation, can solve the problems of not discussing obtaining thin film materials, being difficult to implement, and not disclosing the preparation conditions of calcium salt and molybdate solution, etc. Health and environmental protection, guaranteed performance, and the effect of expanding the scope of application

Inactive Publication Date: 2007-01-03
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This report is owing to the preparation condition of undisclosed calcium salt and molybdate solution, as the temperature of preparation solution, concentration and preparation flow process etc., those skilled in the art are difficult to implement, only reported the preparation of calcium molybdate film, did not discuss to obtain more Possibility of thin film materials for polymolybdate systems
In addition, the solvent used in this report is ethylene glycol, which is highly toxic and will have a certain impact on the health of operators

Method used

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  • Functional molybdate film and its prepn
  • Functional molybdate film and its prepn
  • Functional molybdate film and its prepn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Preparation of a solution containing Mo ion complexes

[0047] Molybdic acid was dissolved in 15ml of a mixed solvent consisting of propylene glycol (volume percent 25%), propylene glycol methyl ether (volume percent 50%) and glacial acetic acid (volume percent 25%) at normal temperature and pressure to obtain clear and transparent Mo A complex solution with an ion concentration of 1.2M;

[0048] (2) Preparation of a solution containing metal ion complexes

[0049] Lithium carbonate was dissolved in 18ml of a mixed solvent consisting of propylene glycol (volume percent 25%), propylene glycol methyl ether (volume percent 50%) and glacial acetic acid (volume percent 25%) at normal temperature and pressure to obtain clear and transparent Li + A complex solution with a concentration of 1.0M;

[0050] (3) Preparation of molybdate precursor solution

[0051] Stir and mix the above two complex solutions at normal pressure and 10°C for 45 minutes and then let it stand fo...

Embodiment 2

[0056] (1) Preparation of a solution containing Mo ion complexes

[0057] Ammonium molybdate and molybdic acid (the mass ratio of ammonium molybdate and molybdic acid is 3: 1) are dissolved in 15 ml of propylene glycol (volume percentage 65%), propylene glycol methyl ether (volume percentage 15%) and In the mixed solvent that glacial acetic acid (volume percent 20%) forms, obtains clear and transparent Mo ion concentration and is the complex solution of 0.6M;

[0058] (2) Preparation of a solution containing metal ion complexes

[0059] Dissolve 0.0045 moles of lithium carbonate and 0.0045 moles of potassium carbonate in 22.5ml of propylene glycol (volume percent 65%), propylene glycol methyl ether (volume percent 15%) and glacial acetic acid (volume percent 20%) at normal temperature and pressure. In the mixed solvent, a clear and transparent complex solution with an alkali metal ion concentration of 0.4M is obtained;

[0060] (3) Preparation of molybdate precursor solution...

Embodiment 3

[0066] (1) Preparation of a solution containing Mo ion complexes

[0067] Ammonium molybdate was dissolved in 8ml of glycerol solvent at normal temperature and pressure to obtain a clear and transparent complex solution with Mo ion concentration of 0.75M;

[0068] (2) Preparation of a solution containing metal ion complexes

[0069] Dissolve barium carbonate in 60ml glycerol solvent at normal temperature and pressure to obtain clear and transparent Ba 2+ The concentration is 0.1M complex solution;

[0070] (3) Preparation of molybdate precursor solution

[0071] Stir and mix the above two complex solutions at normal pressure and 25°C for 20 minutes and then let it stand for 40 minutes to obtain the barium molybdate precursor solution that meets the requirements;

[0072] (4) Film formation and heat treatment by spin coating technology

[0073] Under normal pressure and room temperature, use the spin-coating technique to form a thin film of the barium molybdate precursor so...

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Abstract

The functional molybdate film on substrate of conductive or non-conductive and crystalline or amorphous material has crystal grain size of 10-500 nm and thickness of 100-3000 nm. Its preparation process includes the following steps: 1. compounding Mo ion complex solution with ammonium molybdate and / or molybdic acid as solute, and propylene glycol, glycerine or the mixture of propylene glycol or glycerine, propylene glycol methyl ether and glacial acetic acid as solvent; 2. compound metal ion complex solution with carbonate of alkali metal or alkali earth metal and / or nitrate of transition metal or rare metal as solute, and propylene glycol, glycerine or the mixture of propylene glycol or glycerine, propylene glycol methyl ether and glacial acetic acid as solvent; 3. preparing molybdate precursor solution through mixing the solutions prepared in the forgoing steps and standing for at least 40 min; and 4. spin coating to form film and drying.

Description

technical field [0001] The invention belongs to the technical field of oxide film preparation by wet chemical method, and in particular relates to a molybdate film and a preparation method thereof. Background technique [0002] Studies have shown that molybdate with scheelite structure belongs to the tetragonal crystal system, and the crystal grains are square biconical or plate-shaped. It is an important photoelectric functional material, scintillation material and fluorescent material. They are a kind of self-activated phosphor, which can emit light under the excitation of UV, X-ray and cathode ray without doping other active ions, and its luminescence originates from MoO 4 2- network and things. At low temperatures (near liquid nitrogen or liquid helium), molybdates with a scheelite structure can exhibit photoluminescent properties. The practical application of such materials can greatly promote the development of tunable microchip lasers. It ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/00C01G39/00
Inventor 余萍胡国兵肖定全刘洋郭吾卿
Owner SICHUAN UNIV
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