Siloxane-Coated Light-Conversion Film for UV-Stable PV Encapsulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Solar photovoltaic assemblies face efficiency and reliability issues due to ultraviolet light exposure, which causes damage such as photolysis and degradation, leading to reduced power generation and assembly reliability.
Innovation Solution
An insulation light-conversion film for photovoltaic assemblies is developed using siloxane-coated carbon quantum dots, thermoplastic elastomer granules, crosslinking agents, co-crosslinking agents, photostabilizers, and antioxidants, which effectively converts ultraviolet light into visible light, reducing damage and improving power generation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If carbon quantum dots are applied to encapsulation adhesive films, then light conversion efficiency is improved, but electrical conductivity increases causing insulation failure
Solution Approach 1:
Siloxane coating is introduced as an intermediary layer between carbon quantum dots and the encapsulation adhesive film matrix. This coating layer acts as an electrical insulation barrier that prevents carbon quantum dots from creating conductive pathways, while maintaining their optical light conversion properties. The siloxane coating effectively decouples the electrical conductivity issue from the optical functionality.
Solution Approach 2:
The patent creates a composite material system consisting of carbon quantum dots combined with siloxane coating and encapsulation adhesive film. This composite structure allows the carbon quantum dots to provide light conversion functionality while the siloxane and adhesive film components provide electrical insulation, achieving both optical performance and electrical safety.
2Productivity
If ultraviolet light is allowed to pass through, then power generation efficiency is maintained, but assembly reliability deteriorates due to photolysis and degradation
Solution Approach 1:
The patent converts the harmful ultraviolet light into beneficial visible light through the light conversion properties of carbon quantum dots. Instead of simply blocking UV light, the system transforms it into usable visible light that can be utilized by the photovoltaic cells, simultaneously protecting the assembly from UV damage while maintaining or enhancing power generation capability.
Solution Approach 2:
The carbon quantum dots with siloxane coating serve as an intermediary layer that intercepts ultraviolet light and converts it to visible light. This intermediary conversion process protects downstream components from UV photolysis and degradation while providing additional visible light for power generation, addressing both reliability and productivity concerns.
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 film enhances power generation efficiency and extends the service life of photovoltaic assemblies by effectively converting ultraviolet light into visible light, thereby reducing degradation and maintaining assembly reliability.
Implementation Method 1
siloxane-coated carbon quantum dots... effectively converts ultraviolet light into visible light
Data Source
AI summary
An insulation light-conversion film for a photovoltaic assembly and a preparation method thereof and a photovoltaic assembly. The preparation process of the insulation light-conversion film for the photovoltaic assembly in the present disclosure includes insulation coating of the carbon quantum dots, material mixing and preparation and film formation by cast. The carbon quantum dots used by the present disclosure come from various sources, are safe and environment-friendly and simple to modify. The insulation-modified siloxane-coated carbon quantum dots can be better dispersed in the resin substrate, showing good binding. The present disclosure improves the light-conversion rate of the adhesive film for the ultraviolet light, increases the power generation efficiency and reduces the attenuation of the power generation efficiency of the aged assembly. The preparation process is simple, and environment-friendly and can be applied to the existing photovoltaic production process.