首页|Ultrathin(～30 μm)flexible monolithic perovskite/silicon tandem solar cell

Ultrathin(～30 μm)flexible monolithic perovskite/silicon tandem solar cell

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The efficiency of rigid perovskite/silicon tandem solar cells has reached 33.9％.However,there has been no report on flexible perovskite/silicon tandem solar cells due to the challenge of overcoming the poor light absorption of ultrathin silicon bottom cells while maintaining their mechanical flexibility.Herein,we report the first demonstration of the perovskite/silicon tandem solar cell based on flexible ultrathin silicon.We show that reducing the wafer thicknesses and feature sizes of the light-trapping textures can significantly improve the flexibility of silicon without sacrificing light utilization.In addition,the cap-ping of the perovskite top cells can further improve the device's mechanical durability by shifting the neutral plane toward the silicon surface that is prone to fracture.Finally,the resulting ultrathin(～30 μm)flexible perovskite/silicon tandem solar cellachieves a certified stabilized efficiency of 22.8％with an extremely high power-to-weight ratio of 3.12 W g-1.Moreover,the flexible tandems exhibit remarkable bending durability,maintaining 98.2％of their initial performance after 3000 bending cycles at a radius of only 1 cm.

Flexible photovoltaicsPerovskite/silicon tandem solar cellsUltrathin and lightweight photovoltaicsLight-trapping nanostructuresBending durability

Xinlong Wang、Jingming Zheng、Zhiqin Ying、Xin Li、Meili Zhang、Xuchao Guo、Shiqian Su、Jingsong Sun、Xi Yang、Jichun Ye

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Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China

University of Chinese Academy of Sciences,Beijing 100049,China

Key Research and Development Program of NingboKey Research and Development Program of Zhejiang ProvinceKey Research and Development Program of Zhejiang ProvinceChina Postdoctoral Science FoundationJoint Funds of the Zhejiang Provincial Natural Science Foundation of ChinaZhejiang Provincial Natural Science Foundation of ChinaNational Key Research and Development of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of China

2023Z1512022C012152024C010922023M743620LBMHD24E020002LY24F0400032018YFB150010362204245U23A200098

2024

10.1016/j.scib.2024.04.022

科学通报(英文版)
中国科学院

科学通报(英文版)

CSTPCD
ISSN：1001-6538
年,卷(期)：2024.69(12)
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