电池结构对 1 MeV 电子辐照后砷化镓激光功率转换器电性能下降的影响，以及为提高抗辐射能力而进行的结构优化

IF 6.3 2区材料科学 Q2 ENERGY & FUELS

Solar Energy Materials and Solar Cells Pub Date : 2024-10-14 DOI:10.1016/j.solmat.2024.113206

Linfeng Shi , Chengyue Sun , Yong Liu , Yiyong Wu , Zhenlong Wu , Hongliang Guo , Ronghua Wan , Bao Zhang , Yubao Zhang

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引用次数: 0

摘要

激光无线电力传输（LWPT）技术在空间无线电力传输方面前景广阔，这就要求高效砷化镓激光功率转换器（LPC）对高能粒子辐射具有很强的耐受性。因此，我们研究了不同结构的砷化镓激光功率转换器在 1 MeV 电子辐照下的降解特性。实验和仿真结果表明，底部电池较厚的 LPC 的电学劣化程度明显更高。衰减的主要原因是底部电池基底中电子浓度的降低，而随着底部电池厚度的减小，电子浓度的降低也就不那么明显了。根据上述分析，建议减薄底部电池的厚度并优化掺杂曲线，以提高 LPC 的抗辐射能力。模拟结果表明，在相同的辐照条件下，优化后的四结 LPC 的电性能衰减明显小于原来的四结 LPC，这表明所提出的策略有效地提高了 LPC 的抗辐射能力。

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Effect of cell structures on electrical degradation of GaAs laser power convertors after 1 MeV electron irradiation and structure-optimization for improving radiation resistance

Laser wireless power transfer (LWPT) technology holds significant promise for wireless power transmission in space, necessitating that high-efficiency GaAs laser power convertors (LPCs) have strong tolerance to high-energy particle radiation. Therefore, the degradation characteristics of GaAs LPCs with different architectures under 1 MeV electron irradiation were investigated. Experimental and simulation results demonstrate that LPCs with thicker bottom cells suffer from significantly more electrical degradation. The degradation is primarily due to a reduction in electron concentrations in the base of the bottom cells, which is considerably less pronounced as the thickness of the bottom cells decreases. Based on these analyses, thinning the thickness and optimizing the doping profile for the bottom cells are proposed to improve the radiation resistance of the LPCs. Simulations show that the electrical degradation of the optimized four-junction LPCs is notably less than that of the original four-junction LPCs under the same irradiation conditions, indicating that the proposed strategies effectively enhance the radiation resistance of the LPCs.

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来源期刊

Solar Energy Materials and Solar Cells 工程技术-材料科学：综合

CiteScore

12.60

自引率

11.60%

发文量

513

审稿时长

47 days

期刊介绍： Solar Energy Materials & Solar Cells is intended as a vehicle for the dissemination of research results on materials science and technology related to photovoltaic, photothermal and photoelectrochemical solar energy conversion. Materials science is taken in the broadest possible sense and encompasses physics, chemistry, optics, materials fabrication and analysis for all types of materials.