The STM analysis of a silver mirror surface

Nikolić, Danilo; Rakočević, Zlatko Lj.; Popov, I Konstantin

doi:10.2298/jsc0110723n

Cited by 5 publications

(5 citation statements)

References 4 publications

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“…First, mirror brightness is governed by flat and mutually parallel parts of the metal surface which exhibit smoothness at the atomic level; second, there are distances of about several atomic diameters between the adjacent flat parts of the surface [19]. However, the correlation between the crystal growth and crystal orientation of silver coating and its reflection was not examined in that study.…”

Section: Introductionmentioning

confidence: 96%

“…On the other hand, the structural criteria for a metal surface to show mirror brightness were previously characterized by Nikolić et al via their scanning tunneling microscopy (STM) as well as atomic force microscopy (AFM) studies [17,19,20]. First, mirror brightness is governed by flat and mutually parallel parts of the metal surface which exhibit smoothness at the atomic level; second, there are distances of about several atomic diameters between the adjacent flat parts of the surface [19].…”

Section: Introductionmentioning

confidence: 99%

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Identifying Key Factors towards Highly Reflective Silver Coatings

Zheng

Wong²,

et al. 2017

Advances in Materials Science and Engineering

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This paper attempts to identify key factor(s) for highly reflective silver (Ag) coatings. Investigation was made over the crystal orientation and surface roughness, using several types of surfaces, including electroplated Ag polycrystal films, physical vapour deposited polycrystal Ag films, and single crystal Ag foils with different crystal orientations. In each type of the surfaces, surface roughness was varied so that, for different combinations of crystal orientation, roughness would elucidate the key factors towards highly reflective Ag coatings. It is found that surface roughness plays a critical role in determining the reflectance, while the crystal orientation has negligible effect. The mean reflectance and one-way ANOVA analysis indicate that the single crystal Ag foils with three orientations performed statistically the same in the same roughness group at significance level = 0.05. Moreover, correlation between the surface reflectance and surface roughness has been proposed for the benefit of coating design. Refection data obtained from the polycrystalline silver samples are used to verify the accuracy of the proposed correlations. It was observed that the development surface area ratio, , is a better roughness indicator in predicting the reflectance of polycrystalline silver films than the arithmetic average roughness, .

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Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Identifying Key Factors towards Highly Reflective Silver Coatings

Zheng

Wong²,

et al. 2017

Advances in Materials Science and Engineering

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“…First, mirror-brightness is governed by flat and mutually parallel parts of the metal surface which exhibit smoothness at the atomic level. Second, the mirror-brightness surfaces should have distances of about several atomic diameters between the adjacent flat parts of the surface [77]. However, the correlation between the crystal growth and crystal orientation of silver coating and its reflection was not examined in that study.…”

Section: Introductionmentioning

confidence: 97%

“…previously characterized by Nikolic et al via their scanning tunneling microscopy (STM)as well as atomic force microscopy (AFM) studies[26,77,78]. First, mirror-brightness is governed by flat and mutually parallel parts of the metal surface which exhibit smoothness at the atomic level.…”

mentioning

confidence: 99%

“…Second, mirror-brightness surfaces should have the distances of about several atomic diameters between the adjacent flat parts of the surface. Although their work has focused on the surface structural characteristics on the reflection of mirror silver on glass, the thickness of their silver coatings is not clearly specified and the relationship between the crystal growth or orientation of silver and its reflection is not examined[77].Therefore, this work aims to establish a comprehensive relationship between the microstructure of silver thin film and its reflectance as well as to propose a statistical model of this correlation. Four coating prototypes using different deposition methods will be used for the investigation: (1) Ag films electroplated from low cyanide silver plating formulation; (2) PVD deposited highly reflective Ag thin films; (3) Ag films electroplated from conventional high cyanide silver plating formulation; (4) Ag films electroplated from cyanide free silver plating formulation.…”

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confidence: 99%

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Highly reflective metallic thin films for high brightness LEDs

Zheng¹

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Improving light extraction efficiency is vital for ensuring the performance of high brightness light emitting diodes (LEDs). One of the improvement methods is to electrodeposit highly reflective silver thin films on the leadframe surfaces. Due to stricter rules and regulations, less toxic electrolytes have become more favorable in the plating industries. To date, comprehensive study on the key factors for developing highly reflective Ag films has not been widely explored. This thesis aims not only to develop low cyanide WOLED White Organic LED XPS X-ray Photoelectron Spectroscopy Abbreviations xxii XRD X-Ray Diffraction XRF X-Ray Fluorescence 2. To understand the effect of surface morphology, crystal structure, film texture and chemical composition on the optical properties of the plated films. 3. To build up a statistical model to simulate the above correlations for demonstrating the influences of material design, process selection, and surface characteristics on optical properties.

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Nanostructural Analysis of Bright Metal Surfaces in Relation to their Reflectivities

Nikolić¹,

Rakočević

Popov

Modern Aspects of Electrochemistry

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The STM analysis of a silver mirror surface

Cited by 5 publications

References 4 publications

Identifying Key Factors towards Highly Reflective Silver Coatings

Identifying Key Factors towards Highly Reflective Silver Coatings

Highly reflective metallic thin films for high brightness LEDs

Nanostructural Analysis of Bright Metal Surfaces in Relation to their Reflectivities

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