Experimental Demonstration of Improvement in Near-Infrared Photodetection Efficiency by Plasmonic Diffraction
Soh Uenoyama,
Kazunori Tanaka,
Hiroyasu Fujiwara
et al.
Abstract:Near-infrared
(NIR) photodetectors are crucial to various
applications,
including face recognition, night vision, and laser detection and
ranging (LiDAR). However, conventional silicon (Si)-based photodetectors
exhibit poor sensitivity in the NIR region (λ = 750–1060
nm) because of low photoabsorption within the photoabsorption layer.
To overcome this limitation, we proposed a plasmonic diffraction approach
that can improve photosensitivity in the NIR regime by properly designing
the period of the metal nanogr… Show more
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