Amorphous silicon sensors for oxidised porous silicon optical waveguides buried in silicon wafers

Bragg mirrors porous silicon back reflector for the light trapping in hydrogenated amorphous silicon

“…As a consequence, the photodetectors that are fabricated from this material, exhibit low dark current and high photosensitivity. They have been developed for several applications such as thin solar cells and sensors [12,13]. The photosensitivity of the electrical properties of a-Si:H thin films result from its high absorption coefficient of visible light in particular in the blue.…”

Photoelectrical Properties of a-Si:H Thin Films Deposited on Porous Silicon by DC-Magnetron Sputtering

“…An original method proposed by de Cesare and al. uses the photoconductivity of hydrogenated amorphous silicon (a-Si:H) to detect the reflected signal [11]. Hydrogenated a-Si is well known for its low dark electrical conductivity, its high coefficient of light absorption and its conductivity that is sensitive to illumination (12,13).…”

Immunosensor application based on Raman spectroscopy of porous silicon

“…Various optical detection applications based on porous silicon (PS) have attracted great attention due to their remarkable optical properties and large functional surface area [1,2] . The specific surface morphology of PS makes it suitable for many different applications in various fields [3] , including biosensing and optical detection of biomolecules [4−6] .…”