具有MgF2/Ag后镜图案的薄膜太阳能电池，可改善近红外反射率

2022 IEEE 49th Photovoltaics Specialists Conference (PVSC) Pub Date : 2022-06-05 DOI:10.1109/PVSC48317.2022.9938785

Lara Barros Reboucas, G. Bauhuis, Jens Olhmann, Jeroen Maasen, E. Vlieg, J. Schermer

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引用次数: 0

摘要

将外延发射与介电金属后镜相结合可以提高III-V型太阳能电池的效率，而不会牺牲昂贵的生长晶圆。在这项工作中，GaAs和GaInP/GaInAs太阳能电池是用图案$\mathbf{MgF}_{2}/\mathbf{Ag}$镜面生产的。与全银后镜相比，子带隙反射率分别提高了3.0%和2.6%。初步结果表明，在工作过程中，由于未使用的近红外光子的反射增强，温度引起的开路电压退化减小。

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Thin-film Solar Cells with MgF2/Ag back mirror patterning for improved near-IR reflectance

Combining epitaxial lift-off with a dielectric-metal back mirror boosts III-V solar cells efficiencies without sacrificing the costly growth wafer. In this work, GaAs and GaInP/GaInAs solar cells are produced with a patterned $\mathbf{MgF}_{2}/\mathbf{Ag}$ mirror. The sub-bandgap reflectance increases by 3.0% and 2.6%, respectively, compared to the devices with a full Ag back mirror. Initial results indicate that, during operation, the temperature-induced open-circuit voltage degradation decreases due to the enhanced reflection of unused near-infrared photons.

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2022 IEEE 49th Photovoltaics Specialists Conference (PVSC)

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