Electrochromic Nanoparticle Core-Shell Structure for Color and Light-Shielding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electrochromic materials face challenges in achieving high discoloration rates and light-shielding properties simultaneously, and are limited in the range of colors that can be implemented.
Innovation Solution
An electrochromic nanoparticle with a core-shell structure, where the core and shell are made of different electrochromic materials, including transition metal oxides and organic or inorganic materials, allowing for complementary or similar colors, enhancing light absorption and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single electrochromic material is used, then the device structure is simple, but the discoloration rate and light-shielding properties cannot be simultaneously optimized
Solution Approach 1:
The electrochromic nanoparticle is divided into a core and a shell, each comprising different electrochromic materials. The core contains a first electrochromic material while the shell contains a second electrochromic material, allowing each segment to contribute differently to the overall discoloration performance and light-shielding properties.
Solution Approach 2:
The patent employs composite electrochromic materials by combining different electrochromic substances in the core and shell. This composite structure enables the simultaneous optimization of discoloration rate and light-shielding properties through the synergistic effects of the different materials.
2Device complexity
If a single electrochromic material is used, then the material selection is simple, but various colors cannot be implemented
Solution Approach 1:
The core-shell structure allows different electrochromic materials to be placed in separate segments. By selecting materials with different electrochromic characteristics for the core and shell, a broader range of colors can be achieved while maintaining relatively simple material selection processes for each individual component.
Solution Approach 2:
Different regions of the nanoparticle (core and shell) are assigned different material compositions optimized for specific color characteristics. This local differentiation enables the overall particle to display multiple colors or color transitions that would not be possible with a single uniform material.
3Ease of manufacture
If a single electrochromic material is used, then the synthesis process is simple, but high light-shielding properties cannot be achieved
Solution Approach 1:
The core-shell segmented structure enables each region to be optimized for light-shielding performance. The different materials in the core and shell can be selected and synthesized to maximize light absorption and blocking across different wavelength ranges, achieving superior overall light-shielding properties.
Solution Approach 2:
The composite nature of the core-shell nanoparticle allows combination of materials with complementary light-absorbing properties. This composite structure achieves enhanced light-shielding effectiveness that exceeds what could be obtained from a single material, while maintaining feasible synthesis methodologies.
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
The nanoparticle achieves high light-shielding properties and a high discoloration rate while enabling the display of various colors through a combination of core and shell colors, with improved chemical stability and structural integrity.
Implementation Method 1
Electrochromism is a phenomenon in which coloration or decolorization is performed by electrochemical oxidation or reduction reaction depending on the direction of application of electric current
Implementation Method 2
the absorption spectrum of the electrochromic material is changed by oxidation or reduction reaction. That is, the electrochromic material does not emit light by itself, but takes color through light absorption
Data Source
AI summary
The present invention relates to an electrochromic nanoparticle having a core-shell structure. The invention provides an electrochromic nanoparticle comprising: a core formed of a first electrochromic material; and a shell encompassing the core and formed of a second electrochromic material, wherein the first electrochromic material is formed of at least one type of transition metal oxide.