Tungsten-Disulfide-Based Ultrathin Solar Cells for Space Applications
Tungsten-Disulfide-Based Ultrathin Solar Cells for Space Applications
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DOI：
10.1109/jphotov.2022.3179986
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发表时间：
2022-09
影响因子：
3
通讯作者：
Sayan Roy;P. Bermel
中科院分区：
文献类型：
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作者：
Sayan Roy;P. Bermel
二维（2-D）材料，如过渡金属二硫属化物（TMDC），是空间光子学的强有力的候选者，因为它们非常轻，柔性，并且对电离辐射有弹性。在这里，一个基于二硫化钨（WS 2）的光伏电池与光子管理功能已被建模，从增强的吸收性能改善。我们的光伏模型包括一个200 nm厚的WS 2基异质结太阳能电池，类似于HIT（异质结与本征薄层）太阳能电池结构，连同光捕获光栅结构和一个反射涂层。优化的一维光栅光捕获结构和适当的介电涂层的光伏电池被证明在我们的模型中，在AM 0太阳光谱下，与其他单结空间光伏电池相比，效率超过23%。材料特性直接取自实验观察结果;具有额外光学特性的拟议设备架构基于实验制造的设备和结构，预计将能抵抗空间环境中的电离辐射。我们的研究结果表明，我们的TMDC为基础的光伏系统与光捕获和涂层是一个强有力的候选人空间光伏应用。
Two-dimensional (2-D) materials, such as transition metal dichalcogenides (TMDCs), are strong candidates for space photovoltaics as they are very lightweight, flexible, and resilient to ionizing radiation. Here, an ultrathin tungsten disulfide (WS2) based photovoltaic cell with photon management features has been modeled, with performance improvement from enhanced absorption. Our photovoltaic model consists of a 200 nm thick WS2-based heterojunction solar cell, similar to the HIT (heterojunction with intrinsic thin layer) solar cell structure, together with a light trapping grating structure and an antireflection coating layer. The photovoltaic cell with an optimized 1-D grating light trapping structure and an appropriate antireflection dielectric coating was demonstrated to give an efficiency above 23% under the AM0 solar spectrum in our model—comparable with other single-junction space photovoltaic cells. The material properties are taken directly from experimentally observed results; the proposed device architecture with additional optical features is based on experimentally fabricated devices and structures and is expected to be resistant to ionizing radiation in the space environment. Our results show that our TMDC-based photovoltaic system with light trapping and antireflection coating is a strong candidate for space photovoltaic applications.