Technology Publications

  • 2015

    ENVIRONMENTALLY FRIENDLY CORROSION PROTECTION

    DoD Corrosion Conference 2015, NACE 2015

    By: Jeff Dawley, Olivia Niitsoo, Christopher Mah, Valentin Ryabov and Elmira Ryabova

    To read the full reports download here: the paper and the presentation

    ENVIRONMENTALLY COMPLIANT PROTECTIVE COATINGS FOR WATER DISTRIBUTION AND STORAGE SYSTEMS

    Journal of Water Resource and Hydraulic Engineering.

    By: Elmira Ryabova, Olivia Niitsoo, Jeff T. Dawley, Christopher M. Mah

    To read the full report, download the paper here

    ENVIRONMENTAL FRIENDLY CORROSION PROTECTION

    16th Nordic Corrosion Congress in May 2015. The Open Conference Proceedings Journal.

    By: Jeff Dawley, Christopher Mah, Olivia Niitsoo, Val Ryabov, and Elmira Ryabova

    To read the full report, download the paper here

    HOW ADVENIRA’S SDN® NOVEL TECHNOLOGY TACKLES ENVIRONMENTAL ISSUES

    Dr. Elmira Ryabova talks at TechConnect World 2015

    To read the full report, download the paper here

  • 2014

    DIFFUSION BARRIER COATINGS ON GLASS BY SOLUTION DERIVED NANOCOMPOSITE (SDN®) TECHNOLOGY

    By: Olivia Niitsoo, Christopher Mah, Rebecca Stamm, Jeff Dawley, Val Ryabov and Elmira Ryabova

    ABSTRACT:

    Glass is an integral component for modern technology – from consumer electronics like cell phone screens and OLEDs to large area photovoltaic (PV) panels, glass often serves as the substrate or superstrate in contact with transparent conducting oxides or other active layers. Thus, device performance depends on the chemical composition of the glass: alkali metal ion diffusion can deteriorate device performance over time. Use of a thin coating that blocks ion diffusion relaxes the demands to glass manufacturing and allows to source glass from different suppliers without compromising reproducibility.

    Diffusion barrier coatings are generally less than few hundred nanometers thick, dense coatings that have to withstand the subsequent processing steps (e.g. high temperature). Solution Derived Nanocomposite (SDN®) technology can produce barrier coatings that meet these demands without the complexities and cost associated with commonly used vacuum (PVD, ALD etc.) and chemical vapor deposition (CVD) techniques. SDN® barrier coatings are applied on glass sheets in a specially designed and patented Roll Coater without the need for vacuum technology at any stage of the process. Tuning of coating properties (thickness, refractive index etc.) is achieved by controlling physicochemical properties of the coating solutions. Optical properties and mechanical durability of SDN® barrier coatings will be discussed.

    SDN® diffusion barrier coating is a single-layer coating that blocks sodium ion diffusion, but also enhances optical properties by reducing reflectivity and improves abrasion resistance of glass.

    To read the full report, download the paper here.

    ENVIRONMENTAL FRIENDLY CORROSION PROTECTION

    Jeff Dawley, Christopher Mah, Olivia Niitsoo, Val Ryabov and Dr. Elmira Ryabova

    ABSTRACT:

    SDN® diffusion barrier coating is a single-layer coating that blocks sodium ion diffusion, but also enhances optical properties by reducing reflectivity and improves abrasion resistance of glass.

    To read the full report, download the paper here.

  • 2013

    SOLUTION DERIVED NANOCOMPOSITE (SDN®) TECHNOLOGY FOR SCALABLE APPLICATION OF SPECTRALLY SELECTIVE OPTICAL COATINGS.

    Niitsoo, V. Ryabov, J. Dawley, P. Wang, E. Ryabova  | Glass Performance Days 2013, June 13, 2013, Tampere, Finland

    ABSTRACT:

    Low-emission (low-e) coatings on architectural glass are a key component for creating sustainable, energy-efficient buildings. They act as optical filters that selectively reflect incoming infrared radiation while transmitting visible wavelengths. We present Solution Derived Nanocomposite (SDN®) technology – a unique alternative to the commonly used vacuum (PVD, CVD, ALD etc.) and non-vacuum (electroplating, CBD, screen-printing etc.) deposition techniques. The key advantages of SDN® are excellent uniformity and purity of the deposited films, substantially lower capital and operating costs, high throughput and material utilization, and low waste treatment cost. SDN® coatings are applied on glass sheets in a specially designed and patented Roll Coater without the need for vacuum technology at any stage of the process. Tuning of optical and other properties is achieved by controlling physicochemical properties of the coating solutions. Unlike metal-based low-e coatings, SDN® low-e coating does not interfere with transmission of cellular communication frequencies. Environmental testing shows excellent durability of SDN® low-e coatings on glass. In addition to low-e coatings, SDN® technology with the Roll Coater allows the production of transparent conductors, electro-chromic films, abrasion- and scratch- resistant coatings, and antifogging coatings.

  • 2012

    NOVEL APPROACH FOR PROCESS CHAMBER COATINGS TO IMPROVE OEE AND REDUCE DEFECTS

    Drs. E. Ryabova, N. Wang, M. Shkolnikov, A. Skumanich  |  SemiCon West Conference, July 12, 2012, San Francisco, CA, USA

    ABSTRACT:

    An Innovative technology is introduced which improves upon the current chamber protective coatings in semi processing equipment. The novel protective coatings are shown to have several advanced capabilities as well as lower overall costs. The protective coatings are engineered to enable ULSI IC-device manufacturing at and below 22nm design pitch providing two levels of protection for chamber components that eliminates on-wafer defects and for contaminations. High purity fully conformal coatings are applied to the various exposed process chamber parts (shower head, liners, etc.) which can be attacked by the process gases and process environment. The desirable elements for these protective coatings are to withstand this attack and to reduce particle shedding or flaking and metal ion contamination. The key improvements with the novel protective coatings are: lower erosion rates, fully conformal coverage, longer lifetimes between PM's, reduced layer stress, reduced particulate development is anticipated as a result of the key features. In addition, the novel deposition method for the protective coatings allows for: complete coverage of even small features or high-aspect ratio features such as the openings in the shower heads, for improved thermal cycling, and also importantly for lower overall processing costs. The key improvements are: better OEE and overall wafer yield. The talk will outline the deposition approach, provide data on the improved coating functionality, and give an understanding of the cost benefits. A comparison will be made for some key parameters, such as erosion rate, against some standard chamber coatings. The overall implications for improved semi production will be expounded including the reduction in energy and materials for processing, the ability to scale to 450mm, and the enabling elements for the 20nm nodes.

    LARGE AREA GLASS COATING FOR ENHANCED PROPERTIES AT LOWER COSTS BASED ON A NON-VACUUM APPROACH

    Drs. E. Ryabova, N. Wang, A. Skumanich  |  9th International conference on Coatings on Glass and Plastics, June 24, 2012, Breda, The Netherlands

    ABSTRACT:

    A novel process is described which improves upon the current approach to coating deposition onto glass by using vacuum coating technologies. This method is achieved without vacuum and at room temperature to apply a range of nanocomposite, clear coatings onto large glass surfaces. The types of coatings include those for scratch and abrasion resistance, as well as other types of compounds, which can be used for anti-reflection (AR) and for Low-e types of films. The technology allows for the application of films over 3 meter square areas with a high throughput that allows for cost effective production implementation. It can be seamlessly integrated into existing glass manufacturing lines. Data will be presented on specific films for scratch and abrasion resistance. Various types of standard measurements are made which include Linear Tabor Abrasion test verified by Haze and Spectral Transmittance measurements, which address the ASTM standards. The results show that the films provide improved coatings with capabilities that meet the functionality requirements. Additional films are developed and discussed which address the AR and Low-e film stack requirements. The general aspects of the novel vacuum-free approach will be outlined and specific data presented. The cost comparisons to standard approaches based on PVD or CVD types of deposition will be highlighted. In addition the advantages as compared with PVD or CVD will be discussed in the context of providing film deposition capability for: large area (2m x 2m and beyond), production scale (more than 1Million sq meters/system/year), and process robustness. Specific superior properties are detailed, and interface engineering capabilities are highlighted for the variety of multilayer stack fabrication in a very economical way.