Efficient Semitransparent Perovskite Solar Cells for 23.0%-Efficiency Perovskite/Silicon Four-Terminal Tandem Cells
Efficient Semitransparent Perovskite Solar Cells for 23.0%-Efficiency Perovskite/Silicon Four-Terminal Tandem Cells
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DOI：
10.1002/aenm.201601128
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发表时间：
2016-10-12
影响因子：
27.8
通讯作者：
Huang, Jinsong
中科院分区：
文献类型：
--
作者：
Chen, Bo;Bai, Yang;Huang, Jinsong
在这里，我们研究了用于高效串联器件的半透明钙钛矿太阳能电池和红外增强硅异质结电池。通过将 7 nm Au 热蒸发到 1 nm 厚的 Cu 种子层上，制备了具有良好导电性和光学透明度的半透明金属电极。为了使该电极充分发挥其潜力，通过改进的一步旋涂方法形成了 MAPbI3 薄膜，形成了一层光滑的层，使后续的金属薄膜保持连续。所制造的半透明钙钛矿太阳能电池在单太阳光照下表现出 16.5% 的效率，并与专门针对钙钛矿/硅串联器件调整的红外增强硅异质结电池结合在一起。硅异质结电池正面的双层减反射涂层和背面的MgF2反射器减少了近红外光的寄生吸收，使用钙钛矿器件过滤后的效率为6.5%，钙钛矿/硅串联器件的总效率为23.0%。
Here, we have investigated semi-transparent perovskite solar cells and infrared enhanced silicon heterojunction cells for high-efficiency tandem devices. A semi-transparent metal electrode with good electrical conductivity and optical transparency has been fabricated by thermal evaporation of 7 nm of Au onto a 1-nm-thick Cu seed layer. For this electrode to reach its full potential, MAPbI3 thin films were formed by a modified one-step spin-coating method, resulting in a smooth layer that allowed the subsequent metal thin film to remain continuous. The fabricated semi-transparent perovskite solar cells demonstrated 16.5% efficiency under one-sun illumination, and were coupled with infrared-enhanced silicon heterojunction cells tuned specifically for perovskite/Si tandem devices. A double-layer antireflection coating at the front side and MgF2 reflector at rear side of the silicon heterojunction cells reduced parasitic absorption of near-infrared light, leading to 6.5% efficiency after filtering with a perovskite device and 23.0% summed efficiency for the perovskite/Si tandem device.