Functional Coatings of Porous Silicon

Cunin, Frédérique

doi:10.1007/978-3-319-71381-6_67

Cited by 1 publication

(1 citation statement)

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“…We chose porous silicon (PS) as a base material for our prototype low-macroscopic field emission cathode due to the prospect of creating a regular PS matrix characterized by a highly specific surface area [10][11][12], which facilitates its further functionalization [10] as well as the introduction of nanoscale coatings [12,13], quantum objects [14], and thin layers [15] for a wide range of distinctive fields of application, including optoelectronics [16], targeted drug delivery [10], and gas sensing [10]. In addition, earlier studies demonstrated successfully synthesized porous silicon of various spatial configurations and morphology, as well as composite nanostructures based on it [17,18].…”

Section: Introductionmentioning

confidence: 99%

Advances in Novel Low-Macroscopic Field Emission Electrode Design Based on Fullerene-Doped Porous Silicon

et al. 2020

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Perspective low-macroscopic field (LMF) emission prototype cathodes based on fullerene C60—doped porous silicon were realized via a two-stage technique comprising the electrochemical etching process of a monocrystalline silicon wafer and functionalization of the acquired porous silicon (PS) matrix with silver-doped fullerene-based carbon structures. The resulting LMF cathode prototypes were studied with SEM and EDS techniques. The formation of an amorphous silver-doped C60-based layer consisting of nanosized aggregates on the matrix surface was established. The emission characteristics of the prototypes were analyzed, crucial parameters including threshold field strength values, emission current density, and effective potential barrier height for electrons were considered. A novel LMF emission model is suggested. It was established that the emitter prototypes realized during this study are on par with or superior to modern and promising field cathodes.

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