Light emitting structure and solar photovoltaic power generation system
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Solution Overview
Problem
The existing solar radiation conversion devices have insufficient power generation efficiency due to inadequate collection of light converted into near-infrared light for power generation cells.
Innovation Solution
A light emitting structure with a sheet-shaped structure that absorbs excitation light and emits light with wavelength conversion, featuring a maximum emission wavelength of 400 nm or more, and an antireflection material on its side surface to enhance light collection and transmission to power generation cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a solar cell module is disposed in an intermediate layer of laminated glass or between plates of glass of double glazing, then power generation can be achieved in windows, but the solar cell module has poor transparency and impairs visibility
Solution Approach 1:
The invention separates the power generation function from the transparent window structure by placing solar cells only in the peripheral area (window frame) rather than across the entire window surface. This segmentation allows the central transparent area to maintain full visibility while the perimeter generates power, resolving the contradiction between power generation and transparency.
Solution Approach 2:
The invention introduces a wavelength conversion material as an intermediary substance within the transparent member. This material converts ultraviolet, visible, or infrared light into near-infrared light that can be effectively utilized by the solar cells in the peripheral area, thereby enhancing power generation efficiency without compromising the transparency and visibility of the main window area.
2Illumination intensity
If highly transparent organic solar cells are used, then transparency is improved, but durability deteriorates
Solution Approach 1:
The invention uses inorganic wavelength conversion materials (such as phosphors or fluorescent materials) that are dispersed in the transparent member to convert light wavelengths. These inorganic materials provide the durability and stability of inorganic substances while the transparent member maintains visibility, avoiding the durability problems of organic solar cells.
Solution Approach 2:
The wavelength conversion material acts as an intermediary that performs the light conversion function without requiring the use of fragile organic solar cell materials. This intermediary approach achieves both transparency and durability by using stable inorganic materials embedded in the transparent structure.
3Use of energy by moving object
If a wavelength conversion material is used to convert light into near-infrared light, then power generation capability is improved, but light collection efficiency deteriorates
Solution Approach 1:
The invention changes the spatial arrangement by collecting converted near-infrared light from the entire transparent member surface and directing it to the peripheral solar cells. This dimensional approach to light collection maximizes the utilization of converted light, improving collection efficiency and resolving the contradiction between power generation capability and light collection efficiency.
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 structure efficiently directs high-wavelength light emitted from the sheet-shaped structure to power generation cells, improving power generation efficiency and maintaining transparency for visibility.
Implementation Method 1
a wavelength conversion material for converting ultraviolet light, visible light, or infrared light into near infrared light
Implementation Method 2
an antireflection material provided on a side surface of the sheet-shaped structure
Implementation Method 3
a power generation cell provided outside the antireflection material on the side surface of the sheet-shaped structure
Data Source
AI summary
The light emitting structure of the present invention includes a sheet-shaped structure which absorbs excitation light and emits light with wavelength conversion and which has a maximum emission wavelength of 400 nm or more; and an antireflection material provided on a side surface of the sheet-shaped structure.