Light absorption enhancement in metal-semiconductor-metal photodetectors using plasmonic nanostructure gratings

In this paper, we adopt the finite difference time-domain (FDTD) method to optimize the absorption of a novel metal-semiconductor-metal photodetector (MSM-PD) structure based on the use of a double-layer nanostructured metal grating. The metal fingers of the MSM-PDs are etched with appropriate depth...

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Main Authors: Das, N., Chee Leong Tan, Lysak, V.V., Alameh, K., Yong Tak Lee
Format: Conference Proceeding
Language:English
Subjects:
Absorption
Charge carrier processes
Etching
FDTD simulation
Fingers
Finite difference methods
Gratings
MSM-PDs
nanophotonics
Optimization methods
Photodetectors
plasmonic nanostructures
Plasmons
Subwavelength gratings
surface plasmon polaritons
Time domain analysis
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Chee Leong Tan
Lysak, V.V.
Alameh, K.
Yong Tak Lee
description In this paper, we adopt the finite difference time-domain (FDTD) method to optimize the absorption of a novel metal-semiconductor-metal photodetector (MSM-PD) structure based on the use of a double-layer nanostructured metal grating. The metal fingers of the MSM-PDs are etched with appropriate depths to maximize light absorption through plasmonic effects. Simulation results show 40 times enhancement in 980 nm light trapping due to extraordinary optical signal propagation through the nanostructured double-metal grating, in comparison to conventional MSM-PDs.
doi_str_mv 10.1109/HONET.2009.5423095
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identifier ISSN: 1949-4092
ispartof 2009 6th International Symposium on High Capacity Optical Networks and Enabling Technologies (HONET), 2009, p.86-90
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1949-4106
language eng
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source IEEE Xplore All Conference Series
subjects Absorption
Charge carrier processes
Etching
FDTD simulation
Fingers
Finite difference methods
Gratings
MSM-PDs
nanophotonics
Optimization methods
Photodetectors
plasmonic nanostructures
Plasmons
Subwavelength gratings
surface plasmon polaritons
Time domain analysis
title Light absorption enhancement in metal-semiconductor-metal photodetectors using plasmonic nanostructure gratings
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