Surface Characterization Study of the Thermal Decomposition of AgO

Weaver, Jason F.; Hoflund, Gar B.

doi:10.1021/j100085a035

Cited by 283 publications

(234 citation statements)

References 8 publications

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“…Despite the adoption of special precautions to minimize air exposure, interaction with the outer atmosphere could not be completely avoided, leading to the presence of chemical species different from the sole metallic silver. Such behavior, whose occurrence confirms the well-known complexity of the Ag-O system, 41,42 reflected the silver reactivity towards oxygencontaining species, 43 enhanced in the present case by the FIG. 4.…”

Section: ͑1͒supporting

confidence: 85%

“…In particular, the C1s photopeak ͓Fig. 6͑a͔͒ was characterized by two components: the main one ͑BE= 284.8 eV͒, assigned to the presence of adventitious carbon, and a second one ͑BE = 287.8 eV͒, ascribed to carbonates or bicarbonates 42,44 arising from atmospheric exposure. Similar attributions were corroborated by the analysis of the O1s signal ͓Fig.…”

Section: Figmentioning

confidence: 99%

“…6͑b͔͒, characterized by a component at BEϷ 533.0 eV due to the silica substrate and a lower BE peak at Ϸ531.1 eV mainly ascribable to Ag 2 CO 3 / AgHCO 3 . 42,44 However, other species could also be responsible for the latter band, including hydroxyl groups and adsorbed H 2 O/O 2 . 41,42 As a general rule, both the O1s and the C1s signals showed a higher CO 3 2− /HCO 3 − contribution for samples characterized by a lower silver content.…”

Section: Figmentioning

confidence: 99%

“…42,44 However, other species could also be responsible for the latter band, including hydroxyl groups and adsorbed H 2 O/O 2 . 41,42 As a general rule, both the O1s and the C1s signals showed a higher CO 3 2− /HCO 3 − contribution for samples characterized by a lower silver content. This effect could be explained taking into account that the latter specimens have a lower particle size ͑see above͒, thus being the most reactive to atmosphere due to their nanostructure.…”

Section: Figmentioning

confidence: 99%

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Silica-supported silver nanoparticles: Tailoring of structure-property relationships

Barreca

Gasparotto

Maragno

et al. 2005

Journal of Applied Physics

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Silica-supported silver nanoparticles were obtained by rf sputtering from Ar plasmas under soft synthesis conditions, with particular attention to the combined influence of rf power and total pressure on the system composition, nanostructure, morphology, and optical properties. In order to attain a thorough insight into the nucleation and growth phenomena of Ag nanoparticles on the silica substrate, several in situ and ex situ characterization techniques were used. In particular, a laser reflection interferometry system was employed for a real-time monitoring of the deposition process, providing useful and complementary information with respect to the other ex situ techniques ͑x-ray photoelectron spectroscopy and x-ray excited Auger electron spectroscopy, glancing incidence x-ray diffraction, atomic force microscopy, optical-absorption spectroscopy, and transmission electron microscopy͒. The above investigations evidenced the formation of silver-based nanosystems ͑average crystallite size ഛ10 nm͒, whose features ͑metal content, Ag particle size and shape, structure and optical properties͒ could be carefully tailored by moderate and controlled variations of the synthesis parameters.

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Section: ͑1͒supporting

confidence: 85%

Section: Figmentioning

confidence: 99%

Section: Figmentioning

confidence: 99%

Section: Figmentioning

confidence: 99%

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Silica-supported silver nanoparticles: Tailoring of structure-property relationships

Barreca

Gasparotto

Maragno

et al. 2005

Journal of Applied Physics

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“…The 3d 5/2 and 3d 3/2 doublets for Ag in the fitting spectra have almost 3:2 peak area ratios, in agreement with the specific area ratios based on the degeneracy of d spin state. Weaver et al reported Ag 3d peak shifts towards lower binding energy values upon oxidation [44]. Accordingly, our results (the position of Ag 3d signal as well as the splitting of spin orbit component of almost 6.0 eV) are consistent with silver compounds and metallic silver which provide unambiguous information on the identity of the Ag oxidation state.…”

Section: Xps Analysis Of Janus-type Gd 2 O 3 Particlessupporting

confidence: 88%

Asymmetric attachment and functionalization of plasmonic nanoparticles on ceramic interfaces

et al. 2018

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The demands for materials that integrate more than one functional imaging or therapeutic unit are of increasing interest for biomedical applications. Here, we present the step-by-step preparation of asymmetric and optically active particles, namely, Gd 2 O 3 @Ag, Gd 2 O 3 @Au, SiO 2 -N 3 @Au, and SiO 2 -SH@Au . Successful attachment of plasmonic nanoparticles to the surface of metal-oxide spheres without necessity of a potentially toxic inter-adhesive layer was proven by optical methods as well as X-ray photoelectron spectroscopy. The combination of optical and magnetic properties as present in Gd 2 O 3 @ Ag and Gd 2 O 3 @Au Janus-type particles leads to dual-imaging probes for optical and magnetic resonance imaging. In addition, functional groups, such as azide groups, were linked to the surface of silica particles previous to Au nanoparticle attachment. Subsequent site-selective click reactions with 5-FAM were successfully performed as demonstrated by UV-Vis measurements. All described systems exhibited excellent long-term stability and can, therefore, be considered as promising candidates for theranostic applications. Graphical abstract

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Transparent Ultrathin Oxygen‐Doped Silver Electrodes for Flexible Organic Solar Cells

Wang

Song

Bae

et al. 2013

Adv Funct Materials

170

171

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An effective method for depositing highly transparent and conductive ultrathin silver (Ag) electrodes using minimal oxidation is reported. The minimal oxidation of Ag layers significantly improves the intrinsic optical and structural properties of Ag without any degradation of its electrical conductivity. Oxygen‐doped Ag (AgOx) layers of thicknesses as low as 6 nm exhibit completely 2D and continuous morphologies on ZnO films, smaller optical reflections and absorbances, and smaller sheet resistances compared with those of discontinuous and granular‐type Ag layers of the same thickness. A ZnO/AgOx/ZnO (ZAOZ) electrode using an AgOx (O/Ag = 3.4 at%) layer deposited on polyethylene terephthalate substrates at room temperature shows an average transmittance of 91%, with a maximum transmittance of 95%, over spectral range 400−1000 nm and a sheet resistance of 20 Ω sq−1. The average transmittance value is increased by about 18% on replacing a conventional ZnO/Ag/ZnO (ZAZ) electrode with the ZAOZ electrode. The ZAOZ electrode is a promising bottom transparent conducting electrode for highly flexible inverted organic solar cells (IOSCs), and it achieves a power conversion efficiency (PCE) of 6.34%, whereas an IOSC using the ZAZ electrode exhibits a much lower PCE of 5.65%.

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Surface Characterization Study of the Thermal Decomposition of AgO

Cited by 283 publications

References 8 publications

Silica-supported silver nanoparticles: Tailoring of structure-property relationships

Silica-supported silver nanoparticles: Tailoring of structure-property relationships

Asymmetric attachment and functionalization of plasmonic nanoparticles on ceramic interfaces

Transparent Ultrathin Oxygen‐Doped Silver Electrodes for Flexible Organic Solar Cells

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