The presentation, entitled "Large-Area Nanostructured Self-Assembled Antireflection Coatings for Photovoltaic Devices," was presented on June 17, 2013 in Tampa, FL as part of a special session on Advanced Photovoltaic Module Concepts and Designs.
Previously, Magnolia Solar has demonstrated ultra-high, broadband transmittance through coated glass windows over a wide range of incident angles. At normal incidence, the reflection losses at the glass-air interface have been reduced from approximately 4% to less than 1%. At large angles of incidence, the reflection losses have been reduced from over 25% to less than 5%. The measured improvement in transmittance results from coating the glass with a new class of materials consisting of porous silicon dioxide nanorods. During the recent PVSC presentation, Dr. Pethuraja described how similar results have now been achieved on larger area, six-inch diameter glass substrates. Magnolia's work scaling up the deposition process to larger areas has been done in collaboration with the College of Nanoscale Science and Engineering (CNSE) and the New York State Energy Research and Development Authority (NYSERDA).
Dr. Ashok K. Sood, President and CEO of Magnolia Solar Corporation, stated, "The antireflection technology described at the IEEE-sponsored conference can increase the power output of any photovoltaic module, including crystalline silicon and thin-film technologies by reducing the reflection losses. Fixed, flat-plate solar cell modules typically suffer significant reductions in power output due to reflection off the front glass encapsulant, most notably when light strikes the panel at glancing angles. Such reflection losses are especially severe early in the morning and late in the afternoon when the sun is lower in the horizon. Reflection losses also occur throughout the day, particularly as diffuse skylight can strike a solar panel at glancing angles."
Dr. Sood further stated, "Nanostructured optical coatings can increase the power output of fixed, flat-plate modules by minimizing reflection losses throughout the day. We believe the nanostructured coatings developed by Magnolia for photovoltaic applications significantly outperform conventional quarter-wavelength coatings at all relevant wavelengths and incident angles. This patent-pending technology has the potential to benefit a wide variety of specialized defense and commercial optical window applications."
About Magnolia Solar Corporation:
Based in Woburn, MA and Albany, NY, Magnolia Solar was founded in 2008 to develop and commercialize revolutionary new thin-film solar cell technologies that employ nanostructured materials and designs. Both higher current and voltage outputs are expected from thin-film solar cells that combine Magnolia's exclusive material structures with advanced optical coatings. Magnolia's patent-pending technology has the ability to capture a larger part of the solar spectrum to produce high efficiency solar cells, and incorporates a unique nanostructure-based antireflection coating technology to further increase the solar cell's efficiency, thereby reducing the cost per watt. Magnolia Solar technology targets electrical power generation applications, such as power for electrical grids and distributed power applications ranging from commercial and residential lighting to specialized military applications.
For more information, please visit www.MagnoliaSolar.com, or visit us on Facebook, Twitter, You Tube, or LinkedIn.
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