title: Tuning the Stoichiometry of Ag2S Thin Films for Resistive Switching Applications.
abstract: In this work silver-rich and sulfur-rich silver sulfide (Ag2S) thin films were fabricated using a diversified set of experimental methods, namely ion beam deposition and atmosphere- and solution-based sulfurizations. The composition of the Ag2S thin films was studied using X-ray diffraction, Raman spectroscopy, scanning electron microscopy and energy dispersive X-ray spectroscopy. We found that it strongly depends on the fabrication conditions, such as sulfurization time and temperature. These conditions, in turn, affect the electrical characteristics of the thin films, namely the resistivity and resistive switching. We were able to control the Ag2S stoichiometry and infer its dependence on the fabrication parameters for all the followed methods.
authors.forename: C
authors.initials: C
authors.lastname: Dias
authors.forename: M P
authors.initials: MP
authors.lastname: Proenca
authors.forename: L
authors.initials: L
authors.lastname: Fernandes
authors.forename: P B
authors.initials: PB
authors.lastname: Tavares
authors.forename: R
authors.initials: R
authors.lastname: Vilarinho
authors.forename: J Agostinho
authors.initials: JA
authors.lastname: Moreira
authors.forename: J P
authors.initials: JP
authors.lastname: Araújo
authors.forename: J
authors.initials: J
authors.lastname: Ventura
mesh_terms: D008855:Microscopy, Electron, Scanning; D018030:Silver Compounds / Q000737:chemistry*; D013052:Spectrometry, X-Ray Emission; D013059:Spectrum Analysis, Raman; D014961:X-Ray Diffraction
chemical_list: D018030:Silver Compounds; C013251:silver sulfide