Fabrication and the Interlayer Coupling Effect of Twisted Stacked Black Phosphorus for Optical Applications

被引：31

作者：

Fang, Tao ^{[1
,4
]}

Liu, Teren ^{[2
]}

Jiang, Zenan ^{[3
]}

Yang, Rui ^{[2
]}

Servati, Peyman ^{[3
]}

Xia, Guangrui ^{[2
]}

机构：

[1] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z4, Canada

[2] Univ British Columbia, Dept Mat Engn, Vancouver, BC V6T 1Z4, Canada

[3] Univ British Columbia, Dept Elect & Comp Engn, Vancouver, BC V6T 1Z4, Canada

[4] Univ British Columbia, Stewart Blusson Quantum Matter Inst, Vancouver, BC V6T 1Z4, Canada

来源：

ACS APPLIED NANO MATERIALS | 2019年 / 2卷 / 05期

关键词：

black phosphorus; Raman spectroscopy; density functional theory; two-dimensional heterostructure; phonon modulation; RAMAN-SPECTROSCOPY; PHOTOLUMINESCENCE; DEPENDENCE; SCATTERING; ANISOTROPY;

D O I：

10.1021/acsanm.9b00462

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

With a new polycarbonate-film-based dry transfer method, we successfully fabricated twisted stacked black phosphorus. Optical characterization showed the overlapping area had special optical response, and high-frequency Raman spectroscopy showed unexpected blue shifts in A(g)(1) and A(g)(2) modes. Density functional theory (DFT) calculations confirmed these blue shifts in twisted bilayer black phosphorus, and revealed significant interlayer coupling effects. Charge distribution calculations indicated other interactions beyond van der Waals force may exist in twisted bilayer black phosphorus. This finding may cast some insight on phonon modulation effect and give some potential applications such as optical filters and infrared photodetectors.

引用

页码：3138 / 3145

页数：15

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