Photoenhance migration of silver atoms in transparent heat mirror coatings

Chiba, Kiyoshi; Nakatani, Kazuki

doi:10.1016/0040-6090(84)90463-2

Cited by 50 publications

(20 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Like previously discussed [35], the peak of the Agions profile in the Ia interfacial region is consistent with the formation of a discontinuous adhesion interlayer forming islands [2,13], possibly as a result of silver diffusion during deposition [43] and promoting the nucleation of a protection layer of decreased permeability [29,32,44]. This peak is also observed on the SiC+CVD sample, however with a much steeper increase at the approach of the Ia interfacial region.…”

Section: Depth Profiling Of As-received Stackssupporting

confidence: 80%

“…Silver contamination of the target cathode during deposition of the previous layers could explain the detection of the Agions. The presence of Ag in the protective SiO2 layer could also result from photo-enhanced diffusion during deposition promoted by oxygen adsorption on silver, as previously proposed for a TiO2 protection layer [43]. Still the pronounced decrease in intensity of these ions measured on the SiC+CVD sample compared to the SiC sample appears to be a direct effect of the suppression of the substrate surface pores, as confirmed by the AFM data, and thus of the channels in the protection layer exposing the underlying silver layer and substrate at the surface pores.…”

Section: Depth Profiling Of As-received Stacksmentioning

confidence: 55%

See 1 more Smart Citation

Role of SiC substrate surface on local tarnishing of deposited silver mirror stacks

Limam

Maurice

Seyeux

et al. 2018

Applied Surface Science

View full text Add to dashboard Cite

The role of the SiC substrate surface on the resistance to the local initiation of tarnishing of thin-layered silver stacks for demanding space mirror applications was studied by combined surface and interface analysis on model stack samples deposited by cathodic magnetron sputtering and submitted to accelerated aging in gaseous H2S. It is shown that suppressing the surface pores resulting from the bulk SiC material production process by surface pretreatment eliminates the high aspect ratio surface sites that are imperfectly protected by the SiO2 overcoat after the deposition of silver. The formation of channels connecting the silver layer to its environment through the failing protection layer at the surface pores and locally enabling H2S entry and Ag2S growth as columns until emergence at the stack surface is suppressed, which markedly delays tarnishing initiation and thereby preserves the optical performance. The results revealed that residual tarnishing initiation proceeds by a mechanism essentially identical in nature but involving different pathways short circuiting the protection layer and enabling H2S ingress until the silver layer. These permeation pathways are suggested to be of microstructural origin and could correspond to the incompletely coalesced intergranular boundaries of the SiO2 layer.

show abstract

Section: Depth Profiling Of As-received Stackssupporting

confidence: 80%

Section: Depth Profiling Of As-received Stacksmentioning

confidence: 55%

Role of SiC substrate surface on local tarnishing of deposited silver mirror stacks

Limam

Maurice

Seyeux

et al. 2018

Applied Surface Science

View full text Add to dashboard Cite

show abstract

“…2 indicates that the layer structures are not parallel to the surface of substrate. There is interdiffsusion of Ag and AZO which may be due to higher reactivity of Ag [15]. Interdiffusion of particles changes the morphology films which can affect the photoelectric properties of the films.…”

Section: Methodsmentioning

confidence: 97%

Study on the electrical and optical properties of Ag/Al-doped ZnO coatings deposited by electron beam evaporation

Sahu

Lin

Huang

2007

Applied Surface Science

View full text Add to dashboard Cite

“…5), and the refraction index and thickness of the BK7 substrate. Ag can permeate into the ZnS layer because of its high activity [23], so a new semiconductor layer will appear. The compound semiconductor layer has a completely different optical performance from the ZnS layer without any chemical combination.…”

Section: Optical Measurementsmentioning

confidence: 99%

Optical properties of ZnS/Ag/ZnS transparent conductive sandwich structures investigated by spectroscopic ellipsometry

Zolanvari

Norouzi

Sadeghi

2015

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

Transparent and conductive ZnS (32 nm)/Ag (16 nm)/ZnS (32 nm) (ZAZ) sandwich structures are deposited on BK7 substrates by vacuum thermal evaporation. Transparent conductive films have unique characteristics such as low resistivity, high optical transmittance in the visible region and high absorption in the ultraviolet regions. The structure of the films is determined by in situ HT-XRD method. The optical properties of the films are ascertained by UV-VIS spectrophotometer. The refractive index n and the extinction coefficient k are extracted from the results of spectroscopic ellipsometry measurements by utilizing the Cauchy model, the refractive index and effective dielectric function are determined.

show abstract

Photoenhance migration of silver atoms in transparent heat mirror coatings

Cited by 50 publications

References 7 publications

Role of SiC substrate surface on local tarnishing of deposited silver mirror stacks

Role of SiC substrate surface on local tarnishing of deposited silver mirror stacks

Study on the electrical and optical properties of Ag/Al-doped ZnO coatings deposited by electron beam evaporation

Optical properties of ZnS/Ag/ZnS transparent conductive sandwich structures investigated by spectroscopic ellipsometry

Contact Info

Product

Resources

About