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Preparation method of metal ordered array nano structure based on plasmon-model metal reinforced fluorescence

A metal-enhanced fluorescence, ordered array technology, applied in the field of nanomaterials, can solve the problems of stability and repeatability of light-emitting devices, expensive equipment, and difficult to control AAO aperture.

Inactive Publication Date: 2014-10-08
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First of all, the poor repeatability of nano-metal preparation limits its large-scale production; secondly, it is a difficult problem to assemble nano-metal materials with regular shapes into uniform films. When nano-metals are added to the device, the film thickness of the device will be uneven. , the light-emitting material is easy to fall off, which severely limits the stability and repeatability of the light-emitting device
In addition, it has been reported in the literature that an ordered silver array structure was prepared using AAO as a template, but the preparation process of the AAO template is complicated, and the pore size of AAO is not easy to control, which brings obstacles to the commercialization of AAO preparation of silver substrates.
In order to overcome the above problems, researchers have made some attempts and efforts, such as using electron beam etching, photolithography, imprinting technology, etc., but the above methods still have defects such as expensive equipment and complicated operations.

Method used

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  • Preparation method of metal ordered array nano structure based on plasmon-model metal reinforced fluorescence
  • Preparation method of metal ordered array nano structure based on plasmon-model metal reinforced fluorescence
  • Preparation method of metal ordered array nano structure based on plasmon-model metal reinforced fluorescence

Examples

Experimental program
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Effect test

Embodiment 1

[0049] 1. Preparation of silver array nanofilms

[0050] S1. Wash the glass slide, and after natural drying, take 15 μL of polystyrene microspheres with a mass fraction of 2.5% and a diameter of 400 nm, and drop-coat it on the glass slide in an area of ​​2cm×2cm;

[0051] S2. After natural drying at room temperature, slowly insert the glass sheet with polystyrene microspheres into distilled water at a certain angle. The polystyrene microspheres will float on the surface of distilled water and self-assemble to obtain a polystyrene film. ;

[0052] S3. After waiting for 5 minutes, completely remove the assembled polystyrene film from the aqueous solution with a quartz plate, and let it dry naturally at room temperature overnight;

[0053] S4. Put the above-mentioned quartz sheet with polystyrene film into the vacuum coating machine, and the vacuum degree is 6.5×10 -4 Under the vacuum state of Pa, deposit silver with a thickness of 40nm on the surface of the film at a depositi...

Embodiment 2

[0061] 1. Preparation of silver array nanofilms

[0062] S1. Wash the glass slide, and after natural drying, take 15 μL of polystyrene microspheres with a mass fraction of 2.5% and a diameter of 1000 nm, and drop-coat it on the glass slide in an area of ​​2cm×2cm;

[0063] S2. After natural drying at room temperature, slowly insert the glass sheet with polystyrene microspheres into distilled water at a certain angle. The polystyrene microspheres will float on the surface of distilled water and self-assemble to obtain a polystyrene film. ;

[0064] S3. After waiting for 5 minutes, completely remove the assembled polystyrene film from the aqueous solution with a quartz plate, and let it dry naturally at room temperature overnight;

[0065] S4. Put the above-mentioned quartz sheet with polystyrene film into the vacuum coating machine, and the vacuum degree is 6.5×10 -4 Under the vacuum state of Pa, deposit silver with a thickness of 40nm on the surface of the film at a deposit...

Embodiment 3

[0073] Preparation of gold array nano film, the steps are as follows:

[0074] S1. Wash the glass slide, and after natural drying, take 15 μL of polystyrene microspheres with a mass fraction of 2.5% and a diameter of 1000 nm, and drop-coat it on the glass slide in an area of ​​2cm×2cm;

[0075] S2. After natural drying at room temperature, slowly insert the glass sheet with polystyrene microspheres into distilled water at a certain angle. The polystyrene microspheres will float on the surface of distilled water and self-assemble to obtain a polystyrene film. ;

[0076] S3. After waiting for 5 minutes, completely remove the assembled polystyrene film from the aqueous solution with a quartz plate, and let it dry naturally at room temperature overnight;

[0077] S4. Put the above-mentioned quartz sheet with polystyrene film into the vacuum coating machine, and the vacuum degree is 6.5×10 -4 Under the vacuum state of Pa, deposit 20nm thick gold on the surface of the film accord...

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Abstract

The invention discloses a preparation method of a metal ordered array nano structure based on plasmon-model metal reinforced fluorescence. The preparation method mainly comprises the following steps: dispensing monodisperse polystyrene microspheres to obtain a polystyrene film; and depositing a metal layer on the polystyrene film. Microsphere templates with different sizes can be selected to obtain the metal nano structures with different sizes. The test result indicates that the nano metal arrays with different sizes have different spectral characteristics, the electric field coupling of the metal structures forms uniform hotspot distribution, and therefore, the nano metal structure has wide application prospects in fluorescence molecule light-emitting reinforcement in the field of surface fluorescence reinforcement and can be widely used in the fields of solar cells, organic light-emitting diodes and the like. The method is simple; and the prepared metal array nano structure has the advantages of uniform structure, high fluorescence molecule light-emitting reinforcement factor and high reinforcement uniformity, is easy for repetitive preparation, and has popularization and application values.

Description

Technical field [0001] The invention belongs to the field of nanomaterials.More specifically, it involves a metal orderly array of metal enhanced fluorescent metal in the spar -up mode and its preparation methods. Background technique [0002] Due to good optical and electrical properties in precious metal nanomaterials, it has great potential application value in the field of photovoltaic fields (such as solar batteries, light emitting diode), biosensions and clinical medicine.Studies have shown that under the stimulation of the light field, the fluorescence body near the metal nano structure, the radiated fluorescent strength is stronger than its free space. This phenomenon is the surface enhanced fluorescent effect (SEF).It has now become one of the fields of attention. [0003] The surface optical properties of precious metal materials such as gold, silver, and other precious metal materials are greatly affected by its surface shape and size.Therefore, gold and silver with di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/20C23C14/02B82Y40/00B82Y30/00
Inventor 章明秋张宇陈旭东
Owner SUN YAT SEN UNIV
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