Method for preparing Ag2X film

A film and compound technology, applied in the field of Ag2X film preparation, can solve the problems of narrow scope of application and high cost, and achieve the effects of being environmentally friendly, cheap raw materials, and easy to obtain raw materials

Inactive Publication Date: 2011-06-01
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Silver selenide and silver telluride thin films are usually prepared by physical methods such as vacuum evaporation, laser flash evaporation, and magnetron sputtering. These methods use expensive coating equipment and the cost is high; electrochemical methods deposit silver selenide and silver telluride The cost of film is relatively low, but the disadvantage is that a conductive substrate must be used, and the scope of application is narrow

Method used

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  • Method for preparing Ag2X film
  • Method for preparing Ag2X film
  • Method for preparing Ag2X film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Synthesis of Silver Selenide Thin Films at Room Temperature

[0035] (1) Ingredients: add 100ml of deionized water to the beaker, put it into the stirring magnet and stir; weigh 0.340g of silver nitrate and 0.111g of selenium dioxide and add it to the beaker; weigh 1.4g of KOH and add it to the beaker, and continue stirring until The solution becomes transparent and clear; weigh 0.424g mercaptopropionic acid and add it to the beaker, and keep stirring; weigh 0.648g KBH 4 Slowly add to the beaker, stirring continuously during the addition; when all the KBH is added 4 After dissolving, take out the stirring magnet, add deionized water to 200ml; put in the glass substrate, and tilt it to form an angle of 30° with the bottom of the beaker;

[0036] (2) Constant temperature reaction: seal the mouth of the beaker with plastic wrap to prevent dust from entering, and let stand at room temperature for 24 hours;

[0037] (3) washing: the gained film is rinsed with deionized wat...

Embodiment 2

[0040] Silver Selenide Thin Films Synthesized in 50℃ Water Bath

[0041] (1) Ingredients: Add 100ml of deionized water into a beaker, put it into a stirring magnet and stir, weigh 0.340g of silver nitrate and 0.15g of sodium selenite into the beaker, then weigh 2.8g of KOH into the beaker, and continue stirring , until the solution becomes transparent and clear; then weigh 0.636g of mercaptopropionic acid and add it to the beaker, and keep stirring; finally weigh 1.296g of KBH 4 Slowly add to the beaker, stirring continuously during the addition. ;To be added all KBH 4 After dissolving, take out the stirring magnet, add deionized water to 200ml; put in the glass substrate, and tilt it to form an angle of 30° with the bottom of the beaker;

[0042] (2) Constant temperature reaction: seal the mouth of the beaker with plastic wrap to prevent dust from entering, put it into a constant temperature water bath at 50°C and let it stand for 12 hours.

[0043] (3) Washing: the obtain...

Embodiment 3

[0046] Silver Selenide Thin Films Synthesized in 70℃ Water Bath

[0047] (1) Ingredients: add 100ml of deionized water to the beaker, put it into the stirring magnet and stir; weigh 0.340g of silver nitrate and 0.166g of potassium selenite and add it to the beaker; weigh 5.6g of KOH and add it to the beaker, and continue stirring. Until the solution becomes transparent and clear; Weigh 1.06g of mercaptopropionic acid into the beaker and keep stirring; Weigh 1.728g of KBH 4 Slowly add to the beaker, stirring continuously during the addition; when all the KBH is added 4 After dissolving, take out the stirring magnet, add deionized water to 200ml; put in the glass substrate, and tilt it to form an angle of 30° with the bottom of the beaker;

[0048] (2) Constant temperature reaction: seal the mouth of the beaker with plastic wrap to prevent dust from entering, and put it in a constant temperature water bath at 70°C for 12 hours;

[0049] (3) washing: the gained film is rinsed w...

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Abstract

The invention belongs to the technical field of material chemistry, and relates to a method for preparing an Ag2X film, wherein X refers to selenium or tellurium. The method provided by the invention comprises the following steps: firstly, adding silver nitrates and a compound of selenium or tellurium into a beaker filled with a solvent, then adding alkali and a complexing agent into the beaker, and fully stirring so as to completely dissolve the added objects, then adding a reducing agent into the beaker, after the reducing agent is completely dissolved, stopping stirring, and adding a substrate into the beaker for depositing the Ag2X film; then, after the thermostatic reaction is completed, washing the obtained Ag2X film with deionized water and absolute ethyl alcohol; and finally, drying the Ag2X film. The method provided by the invention has the advantages that the reaction condition is mild, an Ag2Se or Ag2Te film can be synthesized at one step in an aqueous solution, and the prepared film is smooth, compact and uniform; the used raw materials are cheap and easy to obtain, the process is simple, the large-scale production is easy to realize, and because of avoiding using a large quantity of organic solvents in the process of reaction, the method is in favor of environmental protection, and has a broad market prospect; and the synthesized silver selenide and silver telluride film can be widely applied to multiple fields of fast ionic conductors, nonlinear optical elements, photoelectric secondary batteries, and the like, therefore, the film has a broad market prospect.

Description

technical field [0001] The invention belongs to the technical field of material chemistry and relates to an Ag 2 A preparation method of X thin film, wherein X is selenium or tellurium. Background technique [0002] Both silver selenide and silver telluride are important semiconductor materials, which undergo phase transitions at 406K and 418K, respectively. Silver selenide and silver telluride in the high temperature phase show fast ion conductor properties; below the phase transition temperature, silver selenide and silver telluride are narrow bandgap semiconductors, with higher carrier mobility and lower thermal conductivity. Conductivity. Both silver selenide and silver telluride exhibit a distance magnetoresistance effect when the composition deviates from the stoichiometric ratio. Silver selenide and silver telluride have broad application prospects in the fields of fast ion conductors, nonlinear optical devices, photoelectric secondary batteries, multifunctional io...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/46C30B7/14
Inventor 蔡克峰汪元元姚熹
Owner TONGJI UNIV
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