Journal
NATURE COMMUNICATIONS
Volume 12, Issue 1, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41467-021-25104-6
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Funding
- Academy of Finland [333099, 314810, 333982, 336144, 336818]
- Academy of Finland Flagship Programme [320167]
- European Union's Horizon 2020 research and innovation program [820423, 965124]
- EU [H2020-MSCA-RISE-872049]
- ERC [834742]
- Ministry of Science and Technology (MOST) of China [2018YFE0202700]
- National Natural Science Foundation of China [11622437, 61674171, 11974422]
- Strategic Priority Research Program of Chinese Academy of Sciences [XDB30000000]
- Fundamental Research Funds for the Central Universities, China
- Research Funds of Renmin University of China [16XNLQ01, 19XNQ025, 19XNH065]
- Academy of Finland (AKA) [333099, 333099] Funding Source: Academy of Finland (AKA)
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The authors studied a 1D vdW semiconductor, fibrous red phosphorous, and observed exceptional optical properties of large optical anisotropy and high photoluminescence.
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. One-dimensional van der Waals (1D vdW) materials derive interesting behaviour from dimensional confinement. Here the authors study a 1D vdW semiconductor, fibrous red phosphorous, and observe exceptional optical properties of large optical anisotropy and high photoluminescence.
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