Polarization conversion in bottom-up grown quasi-1D fibrous red phosphorus flakes

Zhaojian Sun, Wujia Chen, Bowen Zhang, Lei Gao, Kezheng Tao, Qiang Li, Jia-Lin Sun and Qingfeng Yan ()
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Zhaojian Sun: Tsinghua University
Wujia Chen: Tsinghua University
Bowen Zhang: Tsinghua University
Lei Gao: Tsinghua University
Kezheng Tao: Tsinghua University
Qiang Li: Tsinghua University
Jia-Lin Sun: Tsinghua University
Qingfeng Yan: Tsinghua University

Nature Communications, 2023, vol. 14, issue 1, 1-13

Abstract: Abstract Fibrous red phosphorus (RP) has triggered growing attention as an emerging quasi-one-dimensional (quasi-1D) van der Waals crystal recently. Unfortunately, it is difficult to achieve substrate growth of high-quality fibrous RP flakes due to their inherent quasi-1D structure, which impedes their fundamental property exploration and device integration. Herein, we demonstrate a bottom-up approach for the growth of fibrous RP flakes with (001)-preferred orientation via a chemical vapor transport (CVT) reaction in the P/Sn/I2 system. The formation of fibrous RP flakes can be attributed to the synergistic effect of Sn-mediated P4 partial pressure and the SnI2 capping layer-directed growth. Moreover, we investigate the optical anisotropy of the as-grown flakes, demonstrating their potential application as micro phase retarders in polarization conversion. Our developed bottom-up approach lays the foundation for studying the anisotropy and device integration of fibrous red phosphorus, opening up possibilities for the two-dimensional growth of quasi-1D van der Waals materials.

Date: 2023
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DOI: 10.1038/s41467-023-40122-2

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