Siloxane-Coated Carbon Quantum Dot Films for Insulated PV UV Conversion
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Solution Overview
Problem
Solar cells are vulnerable to ultraviolet light, which causes degradation and reduces power generation efficiency and assembly reliability, necessitating a solution to convert ultraviolet light into visible light to enhance performance and extend service life.
Innovation Solution
An insulation light-conversion film for photovoltaic assemblies is developed using siloxane-coated carbon quantum dots, thermoplastic elastomer granules, and additives to form a film that converts ultraviolet light into visible light while maintaining insulation and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If carbon quantum dots are applied to encapsulation adhesive films, then light conversion efficiency is improved, but insulation performance deteriorates due to high conductivity
Solution Approach 1:
Siloxane coating is introduced as an intermediary layer between the carbon quantum dots and the encapsulation adhesive film matrix. This coating layer acts as a barrier that reduces the conductivity of carbon quantum dots while preserving their light conversion efficiency, thereby resolving the contradiction between improved productivity and maintained reliability
Solution Approach 2:
The conductivity parameter of carbon quantum dots is modified through siloxane coating. This chemical modification changes the electrical properties of the quantum dots, reducing their conductivity to an appropriate level that maintains insulation performance while retaining light conversion functionality
2Productivity
If ultraviolet light is allowed to pass through, then solar cell response is maintained, but degradation increases due to ultraviolet damage
Solution Approach 1:
The patent converts harmful ultraviolet light into beneficial visible light through the light conversion properties of carbon quantum dots. The ultraviolet radiation that would otherwise cause degradation is transformed into visible light wavelengths that enhance power generation efficiency, turning a harmful factor into a beneficial one
Solution Approach 2:
Carbon quantum dots with siloxane coating serve as an intermediary substance that intercepts ultraviolet light and converts it to visible light. This intermediary layer protects the solar cell from direct ultraviolet exposure while maintaining productive light conversion
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 effectively increases power generation efficiency and reduces degradation, ensuring improved assembly reliability and longevity.
Implementation Method 1
siloxane-coated carbon quantum dots... converts ultraviolet light into visible light
Data Source
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AI summary
This invention belongs to the field of encapsulation film technology. 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.