ESCA Studies of Ag, Ag2O and AgO.

Schön, Gunnar; Tummavuori, Jouni; Lindström, Björn; Enzell, Curt R.; Swahn, Carl‐Gunnar

doi:10.3891/acta.chem.scand.27-2623

Cited by 298 publications

(151 citation statements)

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“…In order to confirm further the chemical state of silver in the as-exchanged sample, the modified Auger parameter was found out analytically taking into account Ag 3d 5/2 photoelectron peak and Ag M 4 N 45 N 45 Auger transition [16]. The parameter was estimated to be 724.9 eV in this sample and the value agrees quite well with that of AgO (724.8 eV) reported in the literature [17]. For comparison, the parameter was calculated to be 726.2 eV for bulk silver.…”

supporting

confidence: 72%

Optical Absorption and Photoluminescence Spectroscopy of the Growth of Silver Nanoparticles

Gangopadhyay¹,

Kesavamoorthy²,

Bera³

et al. 2005

Phys. Rev. Lett.

123

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Results obtained from the optical absorption and photoluminescence (PL) spectroscopy experiments have shown the formation of excitons in the silver-exchanged glass samples.These findings are reported here for the first time. Further, we investigate the dramatic changes in the photoemission properties of the silver-exchanged glass samples as a function of postannealing temperature. Observed changes are thought to be due to the structural rearrangements of silver and oxygen bonding during the heat treatments of the glass matrix.In fact, photoelectron spectroscopy does reveal these chemical transformations of silverexchanged soda glass samples caused by the thermal effects of annealing in a high vacuumatmosphere. An important correlation between temperature-induced changes of the PL intensity and thermal growth of the silver nanoparticles has been established in this Letter through precise spectroscopic studies.

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supporting

confidence: 72%

Optical Absorption and Photoluminescence Spectroscopy of the Growth of Silver Nanoparticles

Gangopadhyay¹,

Kesavamoorthy²,

Bera³

et al. 2005

Phys. Rev. Lett.

123

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“…3a-d). The main peak at 528.9 ± 0.4 eV is attributed to O 2− in a solid oxide phase [11,87,90], and its binding energy is very close to the value reported for oxygen in Ag 2 O in [84]. Interpretation of the second O1s peak at 530.9 ± 0.4 eV, which is observed for the first as well as the subsequent sputtering .…”

Section: Resultssupporting

confidence: 78%

“…These binding energy (BE) values point out to Ag(I) in Ag 2 O [11,[81][82][83][84][85]. For Ag(I), both 3d5/2 and 3d3/2 peaks are located at lower BE values as compared to the fully metallic surface, in agreement with [84,86,87]. The location of Ag M 4 VV Auger peak (Fig.…”

Section: Resultssupporting

confidence: 58%

“…The location of Ag M 4 VV Auger peak (Fig. 2b) at kinetic energies (KE) of 356.3 eV also confirms the presence of Ag 2 O [81,87]. Removal of the Ag(I) layer during Ar + sputtering ( Fig.…”

Section: Resultssupporting

confidence: 52%

“…In the case of spectrum recorded before the sputtering (Fig. 3a), this signal can be linked with surface-adsorbed species: oxygen [11,87], water or OH [91,92] or other contaminations. In the case of advanced stages of the sputtering process ( Fig.…”

Section: Resultsmentioning

confidence: 97%

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Impedance study on the capacitance of silver electrode oxidised in alkaline electrolyte

Grdeń

2017

J Solid State Electrochem

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Electrochemical properties of oxide-covered polycrystalline Ag electrodes were studied in a 0.1 M KOH aqueous electrolyte. The oxide layers formed by a constant potential oxidation at 420 mV vs. Hg|HgO are composed of oxygen-deficient Ag 2 O as follows from the XPS and Auger experiments. Steady-state conditions required for collection of valid impedance spectra were obtained at a potential range of 345-365 mV. The components of the equivalent circuit used for the impedance spectra analysis are analysed as a function of the Ag 2 O layer thickness. The value of the coefficient of the constant phase element (CPE) attributed to the oxide layer is Ag 2 O thickness dependent. On the other hand, the components of the CPE describing the double-layer capacitance of the oxide-covered Ag electrode are independent on the oxide thickness and their values are comparable to those obtained for the oxide-free metal. This indicates that the double-layer capacitances of oxide-covered and oxide-free Ag electrodes are similar.

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Low Electrical Percolation Threshold of Silver and Copper Nanowires in Polystyrene Composites

Gelves

Lin

Sundararaj

et al. 2006

Adv Funct Materials

174

133

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Silver and copper nanowires have been synthesized using a scalable method of AC electrodeposition into porous aluminum oxide templates, which produces gram quantities of metal nanowires ca. 25 nm in diameter and up to 5 and 10 μm in length for Ag and Cu, respectively. The nanowires have been used to prepare polystyrene nanocomposites by solution processing. Electrical resistivity measurements performed on polymer nanocomposites containing different volume fractions of metal indicate that low percolation thresholds of nanowires are attained between compositions of 0.25 and 0.75 vol %.

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ESCA Studies of Ag, Ag2O and AgO.

Cited by 298 publications

References 0 publications

Optical Absorption and Photoluminescence Spectroscopy of the Growth of Silver Nanoparticles

Optical Absorption and Photoluminescence Spectroscopy of the Growth of Silver Nanoparticles

Impedance study on the capacitance of silver electrode oxidised in alkaline electrolyte

Low Electrical Percolation Threshold of Silver and Copper Nanowires in Polystyrene Composites

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