RT Journal Article
T1 Optical Sensing Using Hybrid Multilayer Grating Metasurfaces with Customized Spectral Response
A1 Hamdy Mohamed Elshorbagy, Mahmoud
A1 Cuadrado Conde, Alexander
A1 Alda Serrano, Javier
AB Customized metasurfaces allow for controlling optical responses in photonic and optoelectronic devices over a broad band. For sensing applications, the spectral response of an optical device can be narrowed to a few nanometers, which enhances its capabilities to detect environmental changes that shift the spectral transmission or reflection. These nanophotonic elements are key for the new generation of plasmonic optical sensors with custom responses and custom modes of operation. In our design, the metallic top electrode of a hydrogenated amorphous silicon thin-film solar cell is combined with a metasurface fabricated as a hybrid dielectric multilayer grating. This arrangement generates a plasmonic resonance on top of the active layer of the cell, which enhances the optoelectronic response of the system over a very narrow spectral band. Then, the solar cell becomes a sensor with a response that is highly dependent on the optical properties of the medium on top of it. The maximum sensitivity and figure of merit (FOM) are SB = 36,707 (mA/W)/RIU and ≈167 RIU−1, respectively, for the 560 nm wavelength using TE polarization. The optical response and the high sensing performance of this device make it suitable for detecting very tiny changes in gas media. This is of great importance for monitoring air quality and thecomposition of gases in closed atmospheres.
PB MDPI
SN 1424-8220
YR 2024
FD 2024-02-05
LK https://hdl.handle.net/20.500.14352/101983
UL https://hdl.handle.net/20.500.14352/101983
LA eng
NO Elshorbagy, Mahmoud H., Alexander Cuadrado, and Javier Alda. 2024. "Optical Sensing Using Hybrid Multilayer Grating Metasurfaces with Customized Spectral Response" Sensors 24, no. 3: 1043
NO Submission received: 18 January 2024 / Revised: 30 January 2024 / Accepted: 1 February 2024 / Published: 5 February 2024
NO Ministerio de Economía y Competitividad de España
NO Comunidad de Madrid (España)
DS Docta Complutense
RD 18 abr 2025