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Graded index sol-gel antireflection coatings

Wang, Max and Grandidier, Jonathan and Jones, Steven M. and Atwater, Harry A. (2013) Graded index sol-gel antireflection coatings. In: IEEE 39th Photovoltaic Specialists Conference. IEEE , Piscataway, NJ, pp. 1919-1921. ISBN 978-1-4799-3299-3.

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We explore graded index antireflection coatings that can reduce reflection of light at the ambient/cell or ambient/module boundary at all wavelengths and incidence angles. Simulations show that graded index coatings individually enhance absorption in solar cells across nearly the entire wavelength range. Silica sol-gel coatings with varying refractive indices deposited onto glass and silicon substrates are used to form graded index coatings, and the sol-gel layer processes have been adjusted so that the refractive indices are tunable from n=1.1 to n=1.5. Reflectance measurements also show that reflectivity decreases across the entire spectrum with added solgel multilayers.

Item Type:Book Section
Related URLs:
URLURL TypeDescription DOIArticle
Grandidier, Jonathan0000-0002-3384-6083
Atwater, Harry A.0000-0001-9435-0201
Additional Information:© 2013 IEEE. We acknowledge the Department of Energy Basic Energy Sciences, Office of Science through the Light Material Interactions Energy Frontier Research Center under contract number DE-SC0001293.
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC0001293
Subject Keywords:Solgel, antireflection coating, photovoltaic cells, silicon
Record Number:CaltechAUTHORS:20140918-110542787
Persistent URL:
Official Citation:Wang, M.; Grandidier, J.; Jones, S.M.; Atwater, H.A, "Graded index Sol-Gel antireflection coatings," Photovoltaic Specialists Conference (PVSC), 2013 IEEE 39th , vol., no., pp.1919,1921, 16-21 June 2013 doi: 10.1109/PVSC.2013.6744844 URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:49821
Deposited By: Tony Diaz
Deposited On:18 Sep 2014 22:19
Last Modified:10 Nov 2021 18:48

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