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Method for manufacturing semiconductor sulfide biopolymer nano-composite film

A biopolymer and nanocomposite technology, which is applied in the field of preparation of II-VI semiconductor sulfide/biopolymer nanocomposite films, can solve performance differences and fluctuations, film thickness and performance are unstable, and are not well resolved. problems such as film uniformity, to achieve low cost, ensure structural uniformity and performance stability, and achieve good luminous performance.

Inactive Publication Date: 2014-12-17
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

exist - In the study of composite materials of semiconductor sulfides and biopolymers, although a variety of preparation methods have been developed for composite films represented by the composite of ZnS and biopolymers, these methods have not yet solved the problem of film uniformity, such as The thickness and performance of the film are unstable, and small differences in the experimental environment or operating methods will lead to large performance differences and fluctuations

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] First, the cleaning and pretreatment of the quartz sheet are performed. The method is as follows: Take a 47×14 mm quartz plate and ultrasonically clean it in deionized water, detergent, ethanol, hydrochloric acid, and deionized water for 20 minutes to remove impurities and oil on the surface of the quartz plate and ensure the cleanliness of the quartz plate. Then, dry the cleaned quartz sheet for later use.

[0021] Second, prepare the precursor solution. (1) Preparation of chitosan solution: Add 0.5g chitosan to 50 mL deionized water, meanwhile add zinc acetate and copper acetate at a ratio of 95:5 and stir for 1h with a magnetic stirrer, then add 1mL acetic acid dropwise And continue stirring for 2h to obtain a chitosan solution. (2) Preparation of alginic acid solution and sodium alginate alkaline solution: Dissolve 0.5 g of sodium alginate in 50 mL of deionized water, add 2.5 mmol of sodium sulfide and stir for 3 h with a magnetic stirrer. This solution is called...

Embodiment 2

[0024] First, the cleaning and pretreatment of the quartz sheet are performed. The method is as follows: Take a 47×14 mm quartz plate and ultrasonically clean it in deionized water, detergent, ethanol, hydrochloric acid, and deionized water for 45 minutes to remove impurities and oil on the surface of the quartz plate and ensure the cleanliness of the quartz plate. Then, dry the cleaned quartz sheet for later use.

[0025]Second, prepare the precursor solution. (1) Preparation of chitosan solution: add 0.5 g chitosan to 50 mL deionized water, simultaneously add cadmium acetate and copper acetate at a ratio of 99:1 and stir for 1 h with a magnetic stirrer, then add 1 mL of acetic acid dropwise And continue stirring for 2h to obtain a chitosan solution. (2) Preparation of alginic acid solution and sodium alginate alkaline solution: Dissolve 0.5 g of sodium alginate in 50 mL of deionized water, add 2.5 mmol of sodium sulfide and stir for 3 h with a magnetic stirrer. This solut...

Embodiment 3

[0028] First, the cleaning and pretreatment of the quartz sheet are performed. The method is as follows: Take a 47×14 mm quartz plate and ultrasonically clean it in deionized water, detergent, ethanol, hydrochloric acid, and deionized water for 30 minutes to remove impurities and oil on the surface of the quartz plate and ensure the cleanliness of the quartz plate. Then, dry the cleaned quartz slices for later use.

[0029] Second, prepare the precursor solution. (1) Preparation of chitosan solution: Add 0.5g chitosan to 50 mL deionized water, meanwhile add zinc acetate and europium acetate at a ratio of 95:5 and stir for 1 h with a magnetic stirrer, then add 1 mL of acetic acid dropwise And continue stirring for 2h to obtain a chitosan solution. (2) Preparation of alginic acid solution and sodium alginate alkaline solution: Dissolve 0.5 g of sodium alginate in 50 mL of deionized water, add 2.5 mmol of sodium sulfide and stir for 1 h with a magnetic stirrer. This solution i...

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Abstract

The invention discloses a method for manufacturing a semiconductor sulfide biopolymer nano-composite film, and belongs to the field of semiconductor materials. The method is characterized by comprising manufacturing the composite multilayer film from doped ZnS (namely, ZnS:M), doped CdS (namely, CdS:M), alloy-type sulfite Zn<x>Cd<1-x>S, biopolymer chitosan and sodium alginate by a rotary coating process. The M of the ZnS:M represents Cd, Cu, Ag, Sm, Eu, Tb and the like, the M of the CdS:M represents Zn, Cu, Ag, Sm, Eu, Tb and the like, and the x of the alloy-type sulfite Zn<x>Cd<1-x>S ranges from 1 to 9. The method has the advantages that metal salt is acetate, nitrate or chloride of corresponding metal; raw materials are low in cost, manufacturing operation is simple, and the method is favorable for large-scale industrial production for products; and the doped and alloy-type metal sulfide / chitosan multilayer film manufactured by the method is high in structural homogeneity and performance stability and good in light emitting property, and emitted colors of the film can be regulated by means of adjusting compositions of the film and proportions of the compositions.

Description

technical field [0001] The invention belongs to the field of semiconductor materials, and relates to a method for preparing II-VI group semiconductor sulfide / biological macromolecule nanocomposite films. Background technique [0002] ZnS and CdS are typical - It is a family of semiconductor materials with a bandgap of 3.7eV and 2.42eV, and is widely used in LEDs (L. Sun, et al., J. Mater. Chem., 1999, 9: 1655–1657), nonlinear optical devices (J . Xu, et al., J. Mater. Sci. Lett., 1999, 18: 115–117), photoelectric conversion, photocatalysis and other fields. The energy level structure of nano-ZnS or CdS doped with transition metal or rare earth ions will change, so as to obtain better luminescent properties (A. Klausch, et al., J. Lumin., 2010, 130: 692–697) . In addition, since ZnS and CdS are semiconductor materials with similar properties, nano-Zn can be formed under certain preparation conditions. x Cd 1-x S solid solution alloy (B. Kumar, et al., Thin Solid Fil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/00
Inventor 王丽萍孙玉洁杨晓菲
Owner UNIV OF SCI & TECH BEIJING