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Updated: Jul 9, 2025
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High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
Published on: June 28, 2016
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Strong In-Plane Optoelectronic Anisotropy and Polarization Sensitivity in Low-Symmetry 2D Violet Phosphorus
Weilin Chen1,2, An Chen1,2, Ruan Zhang1,2
1National Key Laboratory of Advanced Micro and Nano Manufacture Technology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.
Nano Letters
|December 5, 2023
Summary
Novel low-symmetry violet phosphorus (VP) exhibits significant anisotropic optoelectronic properties. This discovery advances potential for high-performance anisotropic optoelectronics and future multifunctional applications.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Optoelectronics
Background:
- Low-symmetry 2D materials offer potential for advanced optoelectronics, but face limitations in anisotropic photocurrent and dichroic ratios.
- Existing materials struggle to meet the demands for high-performance anisotropic optoelectronic devices used in optical communication and polarization imaging.
Purpose of the Study:
- To investigate the anisotropic optical and optoelectronic properties of novel low-symmetry violet phosphorus (VP) for the first time.
- To explore the potential of VP with a unique tubular cross-linked structure in anisotropic optoelectronics.
Main Methods:
- Experimental and theoretical investigations of violet phosphorus (VP).
- Fabrication and characterization of VP-based van der Waals phototransistors.
- Measurement of in-plane anisotropic photocurrent and polarized dichroic ratios.
Main Results:
- VP demonstrates significant optoelectronic anisotropies.
- An in-plane anisotropic photocurrent ratio exceeding 10 was achieved.
- A polarized dichroic ratio of 2.16 was observed, outperforming most reported 2D materials.
Conclusions:
- Violet phosphorus (VP) is identified as a promising material for anisotropic optoelectronics.
- The unique properties of VP pave the way for developing next-generation multifunctional optoelectronic devices.
- This research overcomes previous limitations in anisotropic photocurrent and dichroic ratios for 2D materials.
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