Document Type

Conference Proceeding

Publisher

IEEE

Faculty

Computing, Health and Science

School

Electron Science Research Institute (ESRI)

RAS ID

10300

Comments

This article was originally published as: Das, N. K., Karar, A. , Vasiliev, M. , Tan, C., Alameh, K. , & Lee, Y. T. (2010). Groove Shape-Dependent Absorption Enhancement of 850 nm MSM Photodetectors with Nano-Gratings. Proceedings of IEEE Conference on Nanotechnology IEEE-NANO. (pp. 289-293). . Seoul, Korea. IEEE. doi:10.1109/NANO.2010.5697754. Original article available here

Abstract

Finite difference time-domain (FDTD) analysis is used to investigate the light absorption enhancement factor dependence on the groove shape of the nano-gratings etched into the surfaces of metal-semiconductor-metal photodetector (MSM-PD) structures. By patterning the MSM-PDs with optimized nano-gratings a significant improvement in light absorption near the design wavelength is achieved through plasmon-assisted electric field concentration effects. Simulation results show about 50 times light absorption enhancement for 850 nm light due to improved optical signal propagation through the nano-gratings.

DOI

10.1109/NANO.2010.5697754

Included in

Engineering Commons

 
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Link to publisher version (DOI)

10.1109/NANO.2010.5697754