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Article July 1st, 2013 (Glass Performance Days 2013) 0
Olivia Niitsoo, Val Ryabov, Jeff Dawley, Patrick Wang, Elmira Ryabova
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 anti-fogging coatings.