Giant anisotropic photonics in the 1D van der Waals semiconductor fibrous red phosphorus

Luojun Du (), Yanchong Zhao, Linlu Wu, Xuerong Hu, Lide Yao, Yadong Wang, Xueyin Bai, Yunyun Dai, Jingsi Qiao, Md Gius Uddin, Xiaomei Li, Jouko Lahtinen, Xuedong Bai, Guangyu Zhang, Wei Ji () and Zhipei Sun ()
Additional contact information
Luojun Du: Aalto University
Yanchong Zhao: Chinese Academy of Sciences
Linlu Wu: Renmin University of China
Xuerong Hu: Aalto University
Lide Yao: Aalto University
Yadong Wang: Aalto University
Xueyin Bai: Aalto University
Yunyun Dai: Aalto University
Jingsi Qiao: Renmin University of China
Md Gius Uddin: Aalto University
Xiaomei Li: Chinese Academy of Sciences
Jouko Lahtinen: Aalto University
Xuedong Bai: Chinese Academy of Sciences
Guangyu Zhang: Chinese Academy of Sciences
Wei Ji: Renmin University of China
Zhipei Sun: Aalto University

Nature Communications, 2021, vol. 12, issue 1, 1-10

Abstract: Abstract A confined electronic system can host a wide variety of fascinating electronic, magnetic, valleytronic and photonic phenomena due to its reduced symmetry and quantum confinement effect. For the recently emerging one-dimensional van der Waals (1D vdW) materials with electrons confined in 1D sub-units, an enormous variety of intriguing physical properties and functionalities can be expected. Here, we demonstrate the coexistence of giant linear/nonlinear optical anisotropy and high emission yield in fibrous red phosphorus (FRP), an exotic 1D vdW semiconductor with quasi-flat bands and a sizeable bandgap in the visible spectral range. The degree of photoluminescence (third-order nonlinear) anisotropy can reach 90% (86%), comparable to the best performance achieved so far. Meanwhile, the photoluminescence (third-harmonic generation) intensity in 1D vdW FRP is strong, with quantum efficiency (third-order susceptibility) four (three) times larger than that in the most well-known 2D vdW materials (e.g., MoS2). The concurrent realization of large linear/nonlinear optical anisotropy and emission intensity in 1D vdW FRP paves the way towards transforming the landscape of technological innovations in photonics and optoelectronics.

Date: 2021
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DOI: 10.1038/s41467-021-25104-6

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