Optical Studies of Ag<sub>2</sub>O Thin Film Prepared by Electron Beam Evaporation Method

Abstract

Silver oxide (Ag 2 O) thin films were deposited on glass substrates using electron beam gun evaporation techniques without oxygen atmosphere. The deposited films were post annealed at 100˚C, 150˚C, and 200˚C, respectively. The surface morphologies, structural and optical properties at different annealing temperatures were studied using scanning electron microscopy (SEM), X-ray diffraction (XRD), and ultra-violet-visible spectroscopy. The XRD results show that the intensity of (200)

Template synthesis of hollow silver hexapods using hexapod-shaped silver oxide mesoparticles

“…Because the reported band gap of Ag 2 O ranges from 1.3 to 2.27 eV, which corresponds to the energy of visible light, the Ag 2 O hexapods will show an apparent band to band transition (from valence to conduction band) in the range of visible light [35][36][37][38][39]. Fig.…”

“…4), which is obtained from the UV-Vis absorption spectrum of the Ag 2 O hexapods. Assuming that the Ag 2 O hexapods are direct transition-type semiconductors [35][36][37][38][39], we can replace the unit of the Y-axis with ''(ahm) 2 '', where ''hm'' is the incident photon energy, and ''a'' is the absorption coefficient calculated from absorbance (A) and the optical path length (l) using Eq. (1).…”

Optoelectronic properties of highly porous silver oxide thin film

“…Silver (Ag) is known for its valuable properties in many aspects of human life. Properties such as electrical conductivity, antimicrobial, photovoltaic, optical properties, and oxidative catalysis toward many reactions [8][9][10][11][12] make the element superior to other nanostructured metals. Silver has minimal toxicity to humans and has been widely used as a disinfectant and in drug delivery and textile hygiene [13].…”

Effective Plasmonic Coupling and Propagation Facilitates Ultrasensitive and Remote Sensing Using Surface Enhanced Raman Spectroscopy

“…The development of an affordable and portable instrument for ultrasensitive and specific in situ detection of extremely low concentrations of analyte molecules in aqueous samples is highly challenging. [1][2][3][4][5][6] Surface-enhanced Raman spectroscopy (SERS) 7,8 is a promising technology to achieve this goal because of its high sensitivity, i.e., up to one single molecule within the detector's field of view (single molecule SERS, or SM-SERS), 9,10 nondestructivity, label-free detection, and portability. The sensitivity and reproducibility of SERS measurements have been significantly improved because of the rapid development of nanotechnology over the last two decades, for instance via engineering optical hot spots.…”