Abstract: This special feature uses Nuwa TCAD software to simulate the optoelectronic characteristics of various solar cells, including PIN solar cells, Poly-Si PIN solar cells, monocrystalline Si solar cells, SiGe solar cells, and InGaP/GaAs/Ge multi-junction compound solar cells. It demonstrates the structure modeling process, relevant model parameter settings, and key results for each type of solar cell using Nuwa TCAD. This guide aims to equip users with a thorough understanding of Nuwa TCAD’s operation and functionalities, enabling them to perform simulation and optimization design for a range of solar cell types.
Solar cells are devices that convert solar energy into electrical energy through the photovoltaic effect. Solar cells offer many advantages, such as being environmentally friendly, renewable, simple in structure, silent, easy to integrate, lightweight, quick to deploy, and having a long lifespan. However, they also have drawbacks like low energy density, sensitivity to environmental factors, and power instability. With the global energy crisis and growing environmental awareness, solar energy is playing an increasingly important role in energy consumption, and the market demand for solar cells is expanding, alongside growing requirements for higher solar-to-electrical conversion efficiency.
Currently, the most widely studied and applied solar cells are those made from semiconductor materials, including [1] a-Si solar cells, monocrystalline Si solar cells, Poly-Si solar cells, CdTe solar cells, CIGS solar cells, and Group V compound solar cells. Reports indicate that the maximum conversion efficiency for crystalline Si solar cells has reached 26.7% [2], and up to 38.8% for III-V compound multi-junction solar cells [2]. Nonetheless, most solar cells still have significant room for improvement compared to their theoretical efficiency limits. Existing material systems offer great potential for advances in device structure design and theoretical research.
In this special feature, we utilize simulation technology to perform modeling calculations of the optoelectronic characteristics of various types of solar cells, including PIN solar cells, Poly-Si PIN solar cells, monocrystalline Si solar cells, SiGe solar cells, and InGaP/GaAs/Ge compound multi-junction solar cells. This involves building device structures, configuring models, and outputting results. The goal is to familiarize users with simulation technology, help them understand the operating principles of various types of solar cells, and ultimately use simulation to optimize solar cell structures for improved conversion efficiency.
This special feature uses Nuwa TCAD to model and simulate different types of solar cells. Nuwa TCAD offers a range of models including light illumination, photon energy transfer, absorption, refractive index, interface effects, defect, SRH recombination, Auger recombination, carrier transport, and tunneling models. These are used to describe the physical processes in various solar cells, such as photon absorption, carrier transport, interface recombination, and energy transfer.
Huang, H., Zhou, L., et al. Photovoltaic Physics and Solar Cell Technology. Science Press, 2018.
Green, M. A., Hishikawa, Y., Dunlop, E. D., Levi, D. H., Hohl-Ebinger, J., & Ho-Baillie, A. W. Y. "Solar cell efficiency tables (Version 51)." , 26 (2018): 3–12.