Organic laser power converter for efficient wireless micro power transfer

Yafei Wang, Zhong Zheng (), Jianqiu Wang, Pengqing Bi, Zhihao Chen, Junzhen Ren, Cunbin An, Shaoqing Zhang and Jianhui Hou ()
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Yafei Wang: Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences
Zhong Zheng: Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences
Jianqiu Wang: Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences
Pengqing Bi: Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences
Zhihao Chen: Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences
Junzhen Ren: Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences
Cunbin An: Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences
Shaoqing Zhang: Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences
Jianhui Hou: Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences

Nature Communications, 2023, vol. 14, issue 1, 1-8

Abstract: Abstract Wireless power transfer with collimated power transmission and efficient conversion provides an alternative charging mode for off-grid and portable micro-power electronics. However, charging micro-power electronics with low photon flux can be challenging for current laser power converters. Here we show laser power converters with organic photovoltaic cells with good performance for application in laser wireless power transfer. The laser selection strategy is established and the upper limit of efficiency is proposed. The organic laser power converters exhibit a 36.2% efficiency at a 660 nm laser with a photon flux of 9.5 mW cm−2 and achieve wireless micro power transfer with an output of 0.5 W on a 2 meter scale. This work shows the good performance of organic photovoltaic cells in constructing organic laser power converters and provides a potential solution for the wireless power transfer of micro-power electronics.

Date: 2023
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DOI: 10.1038/s41467-023-41270-1

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