Tip-enhanced spectroscopy of 2D black phosphorus
Tip-enhanced spectroscopy of 2D black phosphorus
复制标题
二维黑磷的尖端增强光谱
DOI：
10.1002/jrs.5610
复制
发表时间：
2019
影响因子：
2.5
通讯作者：
Meng Lingyan
中科院分区：
文献类型：
--
作者：
Gao Man;Sun Mengtao;Meng Lingyan
Optical studies on black phosphorus (BP) are crucial for its applications in plasmon‐enhanced spectroscopy, biomedicine, and energy. Plasmonic enhancement, spatial resolution, and directional emission, which related to tip‐enhanced spectroscopy of few‐layer BP, have been theoretically investigated. Calculated Raman and fluorescence enhancement factors are 8 and 3 orders of magnitude, respectively. The spatial resolutions for Raman and fluorescence spectroscopy could reach 6 and 7 nm, respectively, under the 633‐nm laser wavelength. Directional tip‐enhanced spectroscopy emission reveals a tunable optimized collection angle by changing the tilted angle of the tip. Our theoretical results provide a deep understanding of the underlying enhanced mechanism of BP spectroscopy, useful for the design of nanoelectronic and optoelectronic devices.
