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Method for preparing semiconductor nanometer compound film

A nano-composite, semiconductor technology, applied in semiconductor/solid-state device manufacturing, semiconductor device, final product manufacturing and other directions, can solve the problems of uneven dispersion of cadmium sulfide, influence of film quality, colloidal coagulation, etc., to achieve low cost and preparation technology. Simple, simple ingredients

Inactive Publication Date: 2009-07-01
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Firstly, the stable sol of titanium oxide is easier to prepare, but the stable sol of cadmium sulfide is relatively difficult to obtain, and the sol of cadmium sulfide with controllable particle size is more difficult to prepare; secondly, when titanium oxide sol and cadmium sulfide sol are mixed, the two colloids Coagulation and precipitation of colloids may occur in the solution, resulting in uneven dispersion of cadmium sulfide in the composite film, which will affect the quality of the film

Method used

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  • Method for preparing semiconductor nanometer compound film
  • Method for preparing semiconductor nanometer compound film
  • Method for preparing semiconductor nanometer compound film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take 0.1g Cd[S 2 P(OC 4 h 9 ) 2 ] 2 , it was ultrasonically dispersed in 5g of N,N-dimethylformamide, and it was a light yellow transparent solution;

[0028] Disperse 113.45 g of tetrabutyl titanate in 176 g of ethanol, and add 16.7 g of acetylacetone as a stabilizer, and after fully stirring, a light yellow completely transparent solution I is obtained; respectively dissolve 4.2 g of concentrated nitric acid and 12.13 g of three times water In 100g of ethanol, after fully stirring, a colorless and transparent solution II was obtained; finally, under the state of strong magnetic stirring, the solution II was added dropwise to the solution I, and the color of the solution I quickly changed from light yellow to yellow or orange , finally turned into a transparent orange color and stopped, and continued to stir for 3 hours to ensure that the reaction was sufficient.

[0029] Weigh 21.13g of titanium dioxide sol, add the prepared Cd[S 2 P(OC 4 h 9 ) 2 ] 2 The dis...

Embodiment 2

[0032] The preparation of the composite sol is the same as in Example 1.

[0033] The dipping-pulling method is used to coat the film, the vertical pulling speed is 42.4cm / min, the ambient temperature is 25°C, and the relative humidity is 45-55%. The coated film was incubated in the air at 80°C for 30min, and then in N 2Under the atmosphere, the temperature was raised to 400°C for 2 hours at a rate of 10°C / min for sintering, and finally cooled naturally to room temperature. The obtained composite film is light yellow transparent film.

Embodiment 3

[0035] The preparation of the composite sol is the same as in Example 1.

[0036] The dipping-pulling method is used to coat the film, the vertical pulling speed is 42.4cm / min, the ambient temperature is 25°C, and the relative humidity is 45-55%. The coated film was incubated in the air at 80°C for 30min, and then in N 2 Under the atmosphere, the temperature was raised to 600°C at a rate of 10°C / min for sintering for 2 hours, and finally cooled to room temperature naturally. The obtained composite film is light yellow transparent film.

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Abstract

The invention discloses a preparing method of semi-conductor nanometer composite films, which comprises dissolving molecule precursors which can form cadmium sulphide nanometer particles into titanium oxide collosol, thereby realizing the intimate mixing of precursors and titanium oxide colloidal particle molecule grade, coating film on the collosol, further doing heat treatment, and the precursors in-situ forming cadmium sulphide nanometer particles in titanium oxide film in the heat treatment process.

Description

technical field [0001] The invention relates to a method for preparing a semiconductor nanocomposite film, in particular to a CdS / TiO film with uniform distribution of particles and good optical properties. 2 A method for preparing a semiconductor nanocomposite film. Background technique [0002] Due to the quantum size effect and surface interface effect, the thin film of compound semiconductor nanoparticles has excellent optical properties, such as photoelectric catalysis, photoelectric conversion and other characteristics. However, semiconductor composite nanoparticles with coupled structures have greater application prospects in solar energy conversion. As an important branch of nano photocatalytic materials - self-cleaning glass, based on TiO 2 As the main body, it adopts environmentally friendly surface sensitization technology to achieve efficient and pollution-free transformation of oil and other harmful substances in the air. Conventional self-cleaning glass coat...

Claims

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Application Information

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IPC IPC(8): H01L31/18H01L21/368
CPCY02P70/50
Inventor 娄文静王晓波郝京诚陈淼
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI