Nanowire With Embedded Semiconductor Nanoparticles
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Solution Overview
Problem
Nanowires present challenges in further treatment and processing due to their fine structure, making it difficult to enhance functionality through surface or interior modifications.
Innovation Solution
A nanowire structure is developed with a core of a first semiconductor material and nanoparticles of a second semiconductor material located on or within the nanowire body, allowing for self-organization and functionalization without complex processing techniques, using a production method that includes catalyst metal placement and thermal oxidation to control particle size and distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional lithography techniques are used for miniaturization, then manufacturing precision is improved, but device complexity and cost increase rapidly
Solution Approach 1:
The nanowire structure performs self-organization and self-alignment during growth, eliminating the need for complex lithography patterning steps. The catalyst particles automatically position themselves and guide nanowire formation, replacing sophisticated lithography techniques with a self-organizing growth process that achieves comparable or superior precision without the associated complexity and cost
Solution Approach 2:
The invention changes the fundamental growth parameters by using vapor-liquid-solid mechanism with catalyst particles at controlled temperatures (700-1100°C). By adjusting temperature, pressure, and gas flow parameters, precise control over nanowire diameter, length, and crystal orientation is achieved without requiring complex lithography equipment, thus improving manufacturing precision while reducing device complexity
2Adaptability or versatility
If further treatment is performed on nanowire surface or interior, then functionality is enhanced, but processing difficulty increases due to fine structure
Solution Approach 1:
The nanowire structure is pre-functionalized during the growth process itself by incorporating semiconductor particles into the nanowire body or positioning them on the surface. This preliminary incorporation of functional elements eliminates the need for subsequent complex surface or interior treatment steps, as the functionality is built-in during manufacturing rather than added later through difficult processing
Solution Approach 2:
The invention creates composite nanowire structures by incorporating semiconductor particles (such as SiGe, SiC, or other materials) within or on the nanowire body. These composite structures provide enhanced functionality (such as light emission, photodetection, or strained silicon effects) while the entire structure is formed through a unified growth process, avoiding the need for separate treatment steps on the fine nanowire structure
3Reliability
If nanoparticles are incorporated into nanowire, then device characteristics are enhanced, but manufacturing complexity increases
Solution Approach 1:
The invention merges the nanowire growth process with the semiconductor particle formation process into a single unified vapor-liquid-solid growth operation. By combining these processes, the production of functional nanowire structures with embedded particles is achieved in one step rather than through multiple separate manufacturing steps, thus enhancing device characteristics while avoiding increased production process complexity
Solution Approach 2:
The catalyst particle serves as an intermediary that facilitates both nanowire growth and semiconductor particle formation. The catalyst particle mediates the interaction between the vapor phase precursors and the solid nanowire structure, enabling simultaneous incorporation of semiconductor particles during growth without requiring additional complex processing equipment or steps
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables the creation of functional nanowires for devices like light-emission and photodetection without the need for sophisticated lithography or etching, simplifying the production process and improving reproducibility and productivity while allowing control over particle density and size for enhanced device characteristics.
Implementation Method 1
growing on the substrate a nanowire body made of a first semiconductor material which contains a plurality of elements, wherein the nanowire body has a pseudo one-dimensional structure
Implementation Method 2
providing a substrate having catalyst metal particles disposed on a surface
Implementation Method 3
using a production method that includes catalyst metal placement and thermal oxidation to control particle size and distribution
Data Source
AI summary
A nanowire according to the present invention includes: a nanowire body made of a first material; and a plurality of semiconductor particle made of a second material and being contained in at least a portion of the interior of the nanowire body.