Metal-semiconductor-metal (MSM) photodetectors with plasmonic nanogratings
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Das, N. and Karar, A. and Tan, C. and Vasiliev, M. and Alameh, K. and Lee, Y. 2011. Metal-semiconductor-metal (MSM) photodetectors with plasmonic nanogratings. Pure and Applied Chemistry. 83 (11): pp. 2107-2113.
Pure and Applied Chemistry
Department of Electrical and Computer Engineering
We discuss the light absorption enhancement factor dependence on the design of nanogratings inscribed into metal-semiconductor-metal photodetector (MSM-PD) structures. These devices are optimized geometrically, leading to light absorption improvement through plasmon-assisted effects. Finite-difference time-domain (FDTD) simulation results show ~50 times light absorption enhancement for 850 nm light due to improved optical signal propagation through the nanogratings. Also, we show that the light absorption enhancement is strongly dependent on the nanograting shapes in MSM-PDs. © 2011 IUPAC.
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