Visualizing Light Scattering in Silicon Waveguides with Black Phosphorus Photodetectors.
A black phosphorus photodetector is utilized to investigate the light-scattering patterns of a silicon waveguide through wavelength- and polarization-dependent scanning photocurrent measurements. The photocurrent signals exhibit similar patterns to the light-intensity distribution of the waveguide calculated by finite-difference time-domain simulations, suggesting that photoexcited electron-hole pairs in the silicon waveguide can be injected into phosphorene to induce its photoresponse.
Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN, 37235-1824, USA.
Tianjiao
T
Wang
Department of Physics and Astronomy, Vanderbilt University, Nashville, TN, 37235-1807, USA.
Shuren
S
Hu
Department of Physics and Astronomy, Wayne State University, Detroit, MI, 48201, USA.
Bhim
B
Chamlagain
Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN, 37235-1824, USA.
Tu
T
Hong
Department of Physics and Astronomy, Wayne State University, Detroit, MI, 48201, USA.
Zhixian
Z
Zhou
Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN, 37235-1824, USA.|Department of Physics and Astronomy, Vanderbilt University, Nashville, TN, 37235-1807, USA.
Sharon M
SM
Weiss
Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN, 37235-1824, USA.|Department of Physics and Astronomy, Vanderbilt University, Nashville, TN, 37235-1807, USA.
Ya-Qiong
YQ
Xu
black phosphorus; light-matter interaction; photodetectors; silicon waveguides