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Preparation method of cadmium sulfide nano-flower array

A technology of cadmium sulfide nanorods and nanoflowers, which is applied in the field of preparation of cadmium sulfide nanoflower arrays, can solve the problems of weak light absorption performance, difficult popularization and application, and the inappropriateness of cadmium sulfide nanobranched structures for direct preparation of electronic devices, etc., to achieve Simple and controllable effects

Inactive Publication Date: 2014-01-15
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Sung Oh Cho et al. (Crystal Growth & Design 8 (2008) 629-630; Crystal Growth & Design 9 (2009) 5259-5265; J. Phys. Chem. C 113 (2009) 10981–10989; J. Phys. Chem. C 114 ( 2010) 14029-14035; Journal of Alloys and Compounds 509 (2011) L353-L358) prepared dispersed cadmium sulfide nano-branched structures in the solution system, but the obtained cadmium sulfide nano-branched structures are not suitable for direct preparation of electronic devices, not Easy to be promoted and applied
Chinese patent 200810060157.8 discloses a method for preparing a cadmium sulfide nanorod array on a conductive substrate, which can be directly used to prepare electronic devices, but the cadmium sulfide nanorod array obtained by this method is inferior to the cadmium sulfide nanoflower array obtained by the present invention. Said that the specific surface area is small and the light absorption performance is weak
Therefore, it is still a challenge to simultaneously control the branched structure of cadmium sulfide nanostructures and the nanoarrays on the substrate by solution chemistry, especially the preparation of cadmium sulfide nanoflower arrays by solution chemistry on transparent conductive substrates has not been reported.

Method used

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  • Preparation method of cadmium sulfide nano-flower array

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Comparison scheme
Effect test

Embodiment 1

[0023] 1. The tin-doped indium oxide glass substrate was ultrasonically cleaned in detergent, acetone, isopropanol, absolute ethanol and deionized water for 15 minutes and dried, and then the cleaned tin-doped indium oxide glass substrate was placed in the container The molar ratio of cadmium sulfate: thiourea: reduced glutathione (the molar concentration of cadmium precursor is 48mmol / L) is heated in a reactor at 120°C for 12h. After the reaction is complete, The transparent conductive glass substrate is taken out of the solution and rinsed with deionized water to prepare the cadmium sulfide nanorod array;

[0024] 2. The tin-doped indium oxide glass substrate with the cadmium sulfide nanorod array is subjected to oxygen plasma cleaning treatment, the power is 120W, the pressure is 1mbar, and the treatment time is 5min.

Embodiment 2

[0026] 1. The fluorine-doped tin oxide glass substrate was ultrasonically cleaned in detergent, acetone, isopropanol, absolute ethanol and deionized water for 20 minutes and dried, and then the cleaned fluorine-doped tin oxide glass substrate was placed in the container. The molar ratio of cadmium acetate: thiourea: reduced glutathione (the molar concentration of cadmium precursor is 48mmol / L) is heated in a reactor at 220°C for 3.5 hours, and the reaction is complete. Take the transparent conductive glass substrate out of the solution and rinse it with deionized water to prepare the cadmium sulfide nanorod array;

[0027] 2. Immerse the fluorine-doped tin oxide glass substrate with a cadmium sulfide nanorod array in a 10% hydrofluoric acid aqueous solution for 2 minutes.

[0028] 3. The treated surface of the fluorine-doped tin oxide glass substrate with cadmium sulfide nanorod arrays is again placed in a molar ratio of 1:2:0.8 cadmium acetate: thiourea: reduced glutathione (pre...

Embodiment 3

[0030] 1. The fluorine-doped tin oxide glass substrate was ultrasonically cleaned in detergent, acetone, isopropanol, absolute ethanol and deionized water for 30 minutes and dried, and then the cleaned fluorine-doped tin oxide glass substrate was placed in the container. The molar ratio of cadmium sulfate: thioacetamide: reduced glutathione (the molar concentration of cadmium precursor is 48mmol / L) is heated in a reactor at 150°C for 4 hours, and the reaction is complete. Afterwards, the transparent conductive glass substrate is taken out of the solution and rinsed with deionized water to prepare the cadmium sulfide nanorod array;

[0031] 2. Immerse the fluorine-doped tin oxide glass substrate with the cadmium sulfide nanorod array in a 15% hydrofluoric acid aqueous solution for 5 minutes.

[0032] 3. The treated surface of the fluorine-doped tin oxide glass substrate with cadmium sulfide nanorod arrays was again placed on the cadmium sulfate: thioacetamide: reduced glutathione ...

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Abstract

The invention discloses a preparation method of a cadmium sulfide nano-flower array on a transparent conductive glass substrate. The preparation method mainly comprises the following steps: (1) putting a cleaned transparent conductive glass substrate into an aqueous solution consisting of a cadmium-containing precursor, a sulfur-containing precursor and reduced glutathione, heating, then taking the transparent conductive glass substrate out of the solution after the reaction is complete, and washing with deionized water to obtain a cadmium sulfide nano-rod array; (2) performing oxygen plasma cleaning treatment on the transparent conductive glass substrate on which the cadmium sulfide nano-rod array grows, or treating the surface of the transparent conductive glass substrate by using dilute acid; (3) putting the transparent conductive glass substrate into the aqueous solution consisting of the cadmium-containing precursor, the sulfur-containing precursor and the reduced glutathione again, heating, then taking the transparent conductive glass substrate out of the solution after the reaction is completed, and washing with deionized water to obtain a cadmium sulfide nano-flower array. The preparation method is simple and controllable in operation and is conductive to directly preparing electronic devices.

Description

Technical field [0001] The invention is designed in the field of nanotechnology materials, and in particular relates to a method for preparing cadmium sulfide nanoflower arrays. Background technique [0002] Compared with nano-particles and one-dimensional nanorod arrays, nano-arrays with branched structures have attracted extensive attention in the field of materials science because of their better charge transport and light absorption properties. Currently available technologies for preparing nanoarrays with branched structures mainly include: thermal vapor deposition, nanosphere etching, micelle aggregation, microwave heating, and solution chemistry. Among them, the solution chemistry method is simple and economical. [0003] Cadmium sulfide is an important II-VI group semiconductor with a band gap of 2.4eV. It has a wide range of applications in light-emitting diodes, flat panel displays, electrical communications, data storage, and solar cells. Sung Oh Cho et al. (Crystal Gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G11/02B82Y40/00
Inventor 张文华李灿杨春燕
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI