研究目的
To establish a method for spectral splitting of broadband solar light via iteratively optimized diffractive optical elements to increase the efficiency of solar cells.
研究成果
The theoretical results show that more than 30% of light can be focused to designated positions, offering an increase in efficiency of solar cells. The DOE acts simultaneously as a solar concentrator and as a spectral splitter, which are highly desired for multijunction solar cells.
研究不足
The incoming light is considered to be coherent, whereas sunlight is partially coherent. The calculation time increases drastically with the number of pixels and steps, limiting the complexity of the DOE designs.
1：Experimental Design and Method Selection:
The study involves designing two-dimensional diffractive optical elements (DOEs) for spectral splitting and solar concentration. An algorithm is developed to calculate 2D holographic patterns focusing different frequencies to designated positions.
2：Sample Selection and Data Sources:
The study uses computational models to simulate the effect of DOEs on broadband solar light.
3：List of Experimental Equipment and Materials:
Computational tools for algorithm development and simulation.
4：Experimental Procedures and Operational Workflow:
The algorithm iteratively optimizes the height profile of DOEs to achieve desired spectral splitting and concentration.
5：Data Analysis Methods:
The intensity pattern at the output plane is calculated to evaluate the performance of the DOEs.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
