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Triaxial Perovskite Composite Fibers Spinning the Way to Flexible Solar Cells
Advanced Engineering Materials ( IF 3.6 ) Pub Date : 2021-09-12 , DOI: 10.1002/adem.202100773
Christoph Bohr 1 , Khan Lê 1 , Thomas Fischer 1 , Sanjay Mathur 1
Affiliation  

Hybrid halide perovskites have made significant progress in achievably high photoconversion efficiencies (>25%) and stability as a function of their chemical engineering realized by isomorphous substitution at all three sites in AMX3 composition. Whereas the focus of current research lies on planar (2D) devices, this work brings forth an innovative structural engineering concept based on direct electrospinning of the three major perovskite solar cell components, namely, photoabsorber, hole, and electron transport materials, as continuous single triaxial fibers of μm radial dimensions (<5 μm). These perovskite fibers lay the foundation of materials engineering for fabricating tiny solar cells, which can either be woven into fabrics or incorporated as single fibers to power wearables and a variety of devices or sensors, forming the internet of things. The structures of the here presented coaxial CuSCN/MAPbI3 (MA = CH3NH3 +) and triaxial CuSCN/MAPbI3/ZnO-Zn(OAc)2 composite fibers are verified by X-ray diffraction data and electron microscopy coupled with energy dispersive spectroscopy and cross-sectional analysis with focused ion beam. This work demonstrates the first report where the entire photovoltaic (PV) device and material configuration are achieved as concentric axial cables fabricated via single-step electrospinning process.

中文翻译:

三轴钙钛矿复合纤维为柔性太阳能电池开辟了道路

杂化卤化物钙钛矿在可实现的高光转换效率 (>25%) 和稳定性方面取得了重大进展,这是通过在 AMX 3中的所有三个位点进行同晶取代实现的化学工程功能作品。虽然当前研究的重点在于平面(2D)器件,但这项工作提出了一种创新的结构工程概念,该概念基于直接静电纺丝三种主要钙钛矿太阳能电池组件,即光吸收剂、空穴和电子传输材料,作为连续的单一材料μm径向尺寸(<5 μm)的三轴纤维。这些钙钛矿纤维为制造微型太阳能电池的材料工程奠定了基础,这些太阳能电池既可以编织成织物,也可以作为单纤维为可穿戴设备和各种设备或传感器供电,从而形成物联网。这里提出的同轴CuSCN/MAPbI 3 (MA = CH 3 NH 3 + )和三轴CuSCN/MAPbI 3的结构/ZnO-Zn(OAc) 2复合纤维通过X射线衍射数据和电子显微镜结合能量色散光谱和聚焦离子束截面分析进行验证。这项工作展示了第一份报告,其中整个光伏 (PV) 设备和材料配置是通过单步静电纺丝工艺制造的同心轴向电缆实现的。
更新日期:2021-09-12
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