Structural and optical properties of pulse laser deposited Ag2O thin films

Abstract

We deposited Ag 2 O films in PLD system on glass substrate for a fixed partial oxygen gas pressure (70 mili Torr) with the variation of laser energy from 75 to 215 mJ/Pulse. The XRD patterns confirm that the films have well crystallinity and deposited as hexagonal lattice and the crystalline size increases from 26.38 nm to 27.27 nm. The FESEM images show that the particle size of the films increases from 34.84 nm to 65.83 nm. The composition of the films is analyzed from EDX spectra which show that the percentage of oxygen increases from 41.03% to 48.38% with the increment of laser energy. From the optical characterization, it is observed that the optical band gap appears in the visible optical range in an increasing order from 0.87 to 0.98 eV with the increment of laser energy. Our analysis concludes that the Ag 2 O thin films, deposited with these parameters, can be considered as a good absorbent layer for solar photovoltaic application.

Silver thin film electrodes for supercapacitor application

“…BET surface area of 34.5 m 2 /g was reported by Wani et al [43], for silver nanoparticles produced via the solvothermal method. It can be seen from Table 1, that the BET surface area and pore size increased as sputtering power increases, which Dimitrijević et al [26] and Agasti et al [35], attributed to ions been more energetic as sputtering power increases from 250W to 350W. This results in more silver particles dislodged from the RF magnetron target onto the microscope glass slides.…”

“…The EDX peak intensities (counts) at 0.13keV on the silver thin films increased as the deposition power increases as depicted in Figure 2 (a, b and c). Dimitrijević et al [26] and Agasti et al [35], attributed this change in peak intensity to ions been more energetic as sputtering power increases from 250W to 350W. This results in more silver particles dislodged from the RF magnetron target onto the microscope glass slides, increasing the count of metallic silver as deposition power increases from 250W to 350W.…”

From Self-Affine Ag to Mounded Ag@Ag2O Core–Shell Nanoplasmonic Surfaces By Sonochemistry

“…When the Ag NPs are embedded in a shell of silver oxide (Ag@Ag 2 O), the experimental LSPR peak exhibits a large shift by about 90 Such shift can be rather accurately predicted by Mie's theory, using the range of values for the optical constants of Ag 2 O reported in the literature. 83,84 In Figure 9b, the LSPR bands for Ag and Ag@Ag 2 O NP films simulated by Mie's theory are shown. The resemblance of the experimental data shown in Figure 8a is excellent.…”

A selective NH3 gas sensor based on (Ag2O)1-x(SnO2)x nanocomposites thin films at various operating temperatures

“…However, compared to other materials, Ag2O exhibits a greater peak of hexagonal crystal lattice along the orientation (011). The quality of the crystal structure is represented by the quality of the XRD peaks; a more intense peak of Ag2O denotes better crystallinity 24 .…”