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Method for preparing strontium fluoride or rare-earth doped strontium fluoride film by adopting electrolytic deposition

A technology of rare earth doping and strontium fluoride, applied in chemical instruments and methods, electrolytic inorganic material coating, single crystal growth, etc., can solve the problems that hinder the general application, complex equipment experiment procedures, etc., and achieve simple equipment and fast deposition rate , the effect of low growth temperature

Inactive Publication Date: 2010-11-24
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods require high temperature, high vacuum, complex equipment, and rigorous experimental procedures, which greatly hinder their general application.

Method used

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  • Method for preparing strontium fluoride or rare-earth doped strontium fluoride film by adopting electrolytic deposition
  • Method for preparing strontium fluoride or rare-earth doped strontium fluoride film by adopting electrolytic deposition
  • Method for preparing strontium fluoride or rare-earth doped strontium fluoride film by adopting electrolytic deposition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1) Clean the ITO conductive glass twice with acetone, then clean the ITO conductive glass in an ultrasonic cleaner with deionized water for 10 minutes, then place the ITO conductive glass in a 10% nitric acid solution to activate it for 10 seconds, and finally use Deionized water cleaning, stand-by;

[0020] 2) In the 0.01 mol / liter disodium edetate and strontium ion complex solution, add 0.02 mol / liter sodium ascorbate, then add 0.04 mol / liter ammonium fluoride solution, adjust the pH value of the solution to 6, Obtain electrolyte, stand-by;

[0021] 3) Use ITO conductive glass as the working electrode, the platinum electrode as the counter electrode, and the calomel electrode as the reference electrode to form a three-electrode system, place it in the electrolyte for electrodeposition, and the anode deposition potential relative to the calomel electrode is 0.8V, The deposition temperature is 25° C. to obtain a strontium fluoride thin film.

Embodiment 2

[0023] 1) Clean the ITO conductive glass with acetone for 3 times, then clean the ITO conductive glass in an ultrasonic cleaner with deionized water for 30 minutes, then put the ITO conductive glass in 10% nitric acid solution to activate for 30 seconds, and finally use Deionized water cleaning, stand-by;

[0024] 2) In the 0.5 mol / liter disodium edetate and strontium ion complex solution, add 1 mol / liter sodium ascorbate, then add 2 mol / liter ammonium fluoride solution, adjust the pH value of the solution to 9, Obtain electrolyte, stand-by;

[0025] 3) Use ITO conductive glass as the working electrode, the platinum electrode as the counter electrode, and the calomel electrode as the reference electrode to form a three-electrode system, which is placed in the electrolyte for electrodeposition. The anode deposition potential relative to the calomel electrode is 1.4V. The deposition temperature is 50° C. to obtain a strontium fluoride thin film.

Embodiment 3

[0027] 1) Clean the ITO conductive glass twice with acetone, then clean the ITO conductive glass in an ultrasonic cleaner with deionized water for 15 minutes, then place the ITO conductive glass in a 10% nitric acid solution to activate it for 15 seconds, and finally use Deionized water cleaning, stand-by;

[0028] 2) In the 0.02 mol / liter disodium edetate and strontium ion complex solution, add 0.04 mol / liter sodium ascorbate, then add 0.08 mol / liter ammonium fluoride solution, adjust the pH value of the solution to 7, Obtain electrolyte, stand-by;

[0029] 3) Use ITO conductive glass as the working electrode, the platinum electrode as the counter electrode, and the calomel electrode as the reference electrode to form a three-electrode system, which is placed in the electrolyte for electrodeposition. The anode deposition potential relative to the calomel electrode is 1.1V. The deposition temperature is 30° C. to obtain a strontium fluoride thin film.

[0030] The structure ...

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Abstract

The invention discloses a method for preparing a strontium fluoride or rare-earth doped strontium fluoride film by adopting electrolytic deposition. The method comprises the following steps of: 1) cleaning an ITO conductive glass twice or thrice by using acetone, then cleaning the ITO conductive glass in an ultrasonic cleaner for 10 to 30 minutes by using deionized water, activating the ITO conductive glass for 10 to 30 seconds in 10 percent nitric acid solution, and cleaning the ITO conductive glass by using the deionized water for later use; 2) adding sodium ascorbate and ammonium fluoride solution into compound solution of 0.01 to 0.5mol / L ethylene diamine tetraacetic acid and strontium ions, and adjusting the pH value to be between 6 and 9 to obtain electrolyte for later use; and 3) placing the ITO conductive glass serving as a working electrode, a platinum electrode serving as a counter electrode and a calomel electrode serving as a reference electrode into the electrolyte to perform electrolytic deposition so as to obtain the strontium fluoride film at an anode deposition potential of 0.8V to 1.4V relative to the calomel electrode. The method has the advantages of simple equipment, low cost and normal-pressure low temperature, is suitable for scientific research, and is expected to realize large-scale industrialized production.

Description

technical field [0001] The invention relates to the preparation of thin films, in particular to a method for preparing strontium fluoride or rare earth doped strontium fluoride thin films by electrodeposition. Background technique [0002] Fluoride has low phonon energy and high ionicity, and is widely used in optical instruments as windows, lenses, and scintillation crystals. Strontium fluoride is a typical alkaline earth fluoride with strong optical transparency. It is mainly used in the manufacture of optical glass, advanced electronic components, and is a good fluorescent substrate. When strontium fluoride is doped with an appropriate amount of rare earth elements, it exhibits characteristic luminescent properties and is an excellent laser material. In addition, rare earth-doped strontium fluoride has properties such as optical amplification and up-conversion. Compared with organic dyes and semiconductor quantum dots, rare earth elements have sharp fluorescence emissio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D9/04C30B29/12C30B30/02
Inventor 刘润王辉陈科立徐铸德
Owner ZHEJIANG UNIV
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