Micro-Concentrating Perovskite Solar Assembly With Antireflection Layer
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Solution Overview
Problem
Current concentration-type perovskite solar cells face challenges in improving efficiency beyond 80% of the Shockley-Queisser limit, with complex device structures and high costs, particularly when using Fresnel lenses for light concentration.
Innovation Solution
A concentration-type perovskite solar assembly is designed with a micro-concentrating layer, an antireflection layer, a perovskite assembly, and a top layer, where the micro-concentrating layer consists of multiple arc-shaped micro-concentrating units arranged in rows, and the antireflection layer is made of materials like Si3N4 to enhance light transmittance and reduce reflectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If Fresnel lens is used as the condenser in concentration-type perovskite cells, then light concentration capability is improved, but device structure becomes complex and cost increases
Solution Approach 1:
The patent divides the concentrating system into multiple independent micro-concentrating units arranged in an array, where each unit is a simple optical element. This segmentation replaces the complex single Fresnel lens with multiple simple components that collectively achieve the desired light concentration effect while simplifying individual element design and reducing manufacturing complexity
Solution Approach 2:
The patent uses multiple copies of identical or similar micro-concentrating units arranged in an array pattern. Instead of using a single complex Fresnel lens, numerous simple micro-lenses are replicated across the surface, each performing the same light concentration function. This copying approach maintains overall light concentration capability while dramatically simplifying the design and manufacturing of individual components
2Illumination intensity
If Fresnel lens is used as the condenser in concentration-type perovskite cells, then light concentration capability is improved, but manufacturing cost increases
Solution Approach 1:
By segmenting the concentrating function into multiple simple micro-lenses, the patent enables standardized mass production of identical components. Each micro-lens can be manufactured using conventional, cost-effective techniques rather than requiring complex Fresnel lens fabrication processes, thereby reducing overall manufacturing cost while maintaining light concentration capability
Solution Approach 2:
The patent employs simple, inexpensive micro-concentrating units that can be manufactured at low cost using conventional optical fabrication techniques. These simple optical elements replace expensive Fresnel lenses, making the overall system more economically viable for large-scale deployment in perovskite solar cell applications
3Illumination intensity
If micro-concentrating units are arranged with overlapping projections, then light concentration in active region is improved, but optical loss occurs in inactive region
Solution Approach 1:
The patent applies local quality by designing the inactive region specifically to accommodate and absorb excess light that spills from adjacent micro-concentrating units. This region has different functional requirements than the active region - it is optimized to handle and dissipate excess optical energy without causing interference or damage to the photovoltaic cells, thereby converting potential energy loss into a controlled functional feature
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
This configuration effectively increases light intensity in the active region while controlling weak light regions in the inactive area, simplifying the cell structure and reducing costs, thereby improving efficiency and making the technology more suitable for large-region applications.
Implementation Method 1
each micro-concentrating unit adopts an arc lens made of optical glass, which is mainly used for concentrating the incident sunlight, improving the incident light intensity
Implementation Method 2
The antireflection layer can effectively reduce the reflectivity of sunlight and improve the transmittance and the uniformity of light distribution
Implementation Method 3
the efficiency of perovskite solar cells, it has gradually become the most potential industrialization technology in the photovoltaic industry
Data Source
Figure 1~2
AI summary
The disclosure provides a concentration-type perovskite solar assembly, which includes a micro-concentrating layer, an antireflection layer, a perovskite assembly and a top layer being sequentially arranged; the micro-concentrating layer includes multiple micro-concentrating units; the plurality of micro-concentrating units are sequentially arranged in rows. According to the disclosure, through the micro-concentrating layer and the antireflection layer, additional large-region condensers can be avoided, and the cost is effectively reduced; the perovskite solar assembly can operate under the condition of low light concentration, and the device efficiency is improved.