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Method for manufacturing Ag/C nano interconnecting wire in coaxial-cable structure

A technology of coaxial cables and interconnecting wires is applied in the field of preparation of Ag/C nanowires, which can solve the problems of inability to effectively control the cross-sectional shape, size and thickness of carbon coating layers of Ag nanowires, and improve the chemical reaction activity. and thermal stability, controllable cross-sectional morphology, and strong applicability

Inactive Publication Date: 2013-12-18
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method can also be extended to the preparation of other carbon-coated metal coaxial cable structure nanowires. Technical Difficulties in Cladding Thickness

Method used

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  • Method for manufacturing Ag/C nano interconnecting wire in coaxial-cable structure
  • Method for manufacturing Ag/C nano interconnecting wire in coaxial-cable structure
  • Method for manufacturing Ag/C nano interconnecting wire in coaxial-cable structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of Ag / C nanointerconnection wires: 0.5g glucose (0.07M) and 0.2g CTAB (14mM) were dissolved in 35ml deionized water, then 1ml AgNO with a concentration of 0.1M was added 3 . Sonicate for 20 minutes to mix well. Then, the mixed solution was transferred to a 50 ml hydrothermal reactor with a filling degree of 80%, and reacted at a constant temperature of 180° C. for 6 hours. After the reaction, it was naturally cooled to room temperature. After separation by centrifugation (10000r / min), the lower precipitate was collected and washed repeatedly with deionized water and absolute ethanol. Finally, the product was placed in a nitrogen environment or vacuum, and dried at 50° C. for more than 5 hours. 6 hours, 7 hours drying is the same as 5 hours.

[0032] figure 1 It is the different enlarged SEM pictures of the product. It can be seen that the product is mainly composed of nanowires, the surface is very smooth, the diameter is about 165nm, the length can rea...

Embodiment 2

[0035] Change the CTAB concentration, the CTAB content in the reactant is 10mM, other conditions are the same as example 1.

Embodiment 3

[0037] Change CTAB concentration, CTAB content is 7mM, other conditions are the same as example 1.

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Abstract

The invention discloses a Ag / C nano interconnecting wire in a coaxial-cable structure and a method for manufacturing the Ag / C nano interconnecting wire in the coaxial-cable structure. The method is based on the one-step hydrothermal reaction, glucose serves as a reducing agent and a carbon source, cetyltrimethyl ammonium bromide (CTAB) serves as a morphological control agent for metallic silver growth, and the best reaction time is in the range of 4-8h. A product is composed of Ag nano wires (cores) with diameters of 30+ / -5nm and surface nano carbon layers (shells), and the length can reach hundreds of micrometers; cross section appearances, dimensions and thicknesses (10-120nm) of carbon coating layers of the core Ag wires are controllable. Prevention of oxidization and corrosion of the nano silver cores is facilitated by carbon coating, so that the chemical reactivity and the heat stability of the nano silver cores are improved. According to the manufacturing method, no template is required, large-scale manufacturing of the interconnecting wires is achieved in one step, and the defects that other template methods (such as electrochemical deposition and chemical vapor deposition) are complicated in step and expensive in price are overcome. Besides, according to the method, devices are simple, the controllability is good, large-scale production can be achieved easily, and the method can be popularized to controllable manufacturing of other metal / carbon nano functional materials in the coaxial-cable structures.

Description

technical field [0001] The invention relates to a metal interconnect nanowire applied to a micro-device and a preparation method thereof, especially an Ag / C nanowire with a coaxial cable structure and a length of up to hundreds of microns (the Ag wire is the core, and the carbon coating is the shell. ) preparation method. Background technique [0002] Metal nanowires have become the focus of extensive research in the world because of their broad application prospects in micro-devices. They are often used as interconnect materials and functional building blocks in electronic, optical, and nanosensing devices. They are also the materials of choice for studying the dimensionality and size dependence of the electrical and thermal transport behavior of small-scale metallic materials. However, nanowires are prone to oxidation and performance failure due to their high specific surface area. Experiments have confirmed that bare metal (such as germanium, molybdenum, silver, copper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F1/02C30B7/10C30B29/02C30B29/62
Inventor 唐少春孟祥康施巍啸赵伟博李谷骏林烈雄
Owner NANJING UNIV
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