Theoretical Demonstration of the Interest of Using Porous Germanium to Fabricate Multilayer Vertical Optical Structures for the Detection of SF6 Gas in the Mid-Infrared

• Published in: Sensors (Basel, Switzerland) Vol. 22; no. 3; p. 844
• Main Authors: Zegadi, Rami, Lorrain, Nathalie, Meziani, Sofiane, Dumeige, Yannick, Bodiou, Loїc, Guendouz, Mohammed, Zegadi, Abdelouahab, Charrier, Joël
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 22.01.2022; MDPI
• Subjects: Biocompatibility; Bragg reflector; Bragg reflectors; Gas sensors; Germanium; Microcavities; mid-infrared detection; Multilayers; optical microcavity; Porosity; porous germanium materials; Porous materials; Refractivity; Silicon; Spectrum analysis; Thickness

Porous germanium is a promising material for sensing applications in the mid-infrared wavelength range due to its biocompatibility, large internal surface area, open pores network and widely tunable refractive index, as well as its large spectral transparency window ranging from 2 to 15 μm. Multilay...