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Visualizing Light Scattering in Silicon Waveguides with Black Phosphorus Photodetectors
Author(s) -
Wang Tianjiao,
Hu Shuren,
Chamlagain Bhim,
Hong Tu,
Zhou Zhixian,
Weiss Sharon M.,
Xu YaQiong
Publication year - 2016
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201506277
Subject(s) - materials science , black phosphorus , photodetector , silicon , optoelectronics , black silicon , scattering , light scattering , optics , phosphorus , physics , metallurgy
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.