Gel-Based Electrochromic Devices for Stable Optical Switching
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Solution Overview
Problem
There is a need for improved electrochromic materials, devices, and methods of their manufacturing and operation to enhance their performance and versatility.
Innovation Solution
The development of electrochromic devices and components, including electrochromic compositions and layers in the form of gels, with specific configurations and methods for fabricating and controlling these devices, utilizing various electrochromic materials and layers that can change optical properties in response to electrical signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional electrochromic materials and structures are used, then basic electrochromic function is achieved, but performance and versatility are limited
Solution Approach 1:
The patent employs composite electrochromic materials combining organic electrochromic compounds with polymer matrices. This composite structure enables simultaneous achievement of electrochromic functionality, mechanical flexibility, and enhanced stability, thereby improving both reliability and versatility of the device
Solution Approach 2:
The patent utilizes UV-curing process to change the physical and chemical parameters of the polymer matrix, transforming it from a liquid or soft state to a cross-linked gel state. This parameter change enables improved device performance, stability, and versatility while maintaining electrochromic functionality
2Ease of manufacture
If UV-curing of polymer matrices is used to manufacture organic electrochromic devices, then device fabrication is achieved, but manufacturing complexity and process control difficulty increase
Solution Approach 1:
The patent incorporates photoinitiators and UV-reactive groups into the polymer matrix formulation before device assembly. This preliminary preparation enables straightforward UV-curing processing later, simplifying the manufacturing process while achieving cross-linked gel formation for enhanced device stability
Solution Approach 2:
The patent replaces traditional thermal curing or chemical cross-linking processes with UV-light-induced curing. This substitution eliminates complex temperature control and chemical handling requirements, simplifying manufacturing while achieving the desired gel structure for improved device performance
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 solution provides electrochromic devices with enhanced control over optical properties, allowing for reversible changes in color and light transmittance, and offers improved durability and stability through the use of gel-based compositions.
Implementation Method 1
Electrochromism is the physical phenomenon found in certain compounds, compositions or assemblies which can reversibly change optical properties such as color or light transmittance due to electric current arising with an application of a voltage called a control voltage.
Data Source
AI summary
Electrochromic devices and components thereof and systems and methods for controlling electrochromic devices are disclosed. Further, electrochromic materials, electrochromic compositions and electrochromic layers useful for the devices and systems can be in the form of a gel. The present disclosure also provide methods to fabricate electrochromic devices and components thereof, electrochromic compositions, layers and gels.