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Broadband and omnidirectional light harvesting enhancement of fluorescent SiC
Technical University of Denmark, Lyngby.
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials.
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, The Institute of Technology.
University of Erlangen-Nurnberg, Erlangen, Germany .
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2012 (English)In: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 20, no 7, 7575-7579 p.Article in journal (Refereed) Published
Abstract [en]

In the present work, antireflective sub-wavelength structures have been fabricated on fluorescent 6H-SiC to enhance the white light extraction efficiency by using the reactive-ion etching method. Broadband and omnidirectional antireflection characteristics show that 6H-SiC with antireflective sub-wavelength structures suppress the average surface reflection significantly from 20.5 % to 1.01 % over a wide spectral range of 390-784 nm. The luminescence intensity of the fluorescent 6H-SiC could be enhanced in the whole emission angle range. It maintains an enhancement larger than 91 % up to the incident angle of 70 degrees, while the largest enhancement of 115.4 % could be obtained at 16 degrees. The antireflective sub-wavelength structures on fluorescent 6H-SiC could also preserve the luminescence spectral profile at a large emission angle by eliminating the Fabry-Perot microcavity interference effect.

Place, publisher, year, edition, pages
Optical Society of America , 2012. Vol. 20, no 7, 7575-7579 p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-76953DOI: 10.1364/OE.20.007575ISI: 000302138800075OAI: oai:DiVA.org:liu-76953DiVA: diva2:524358
Note

Funding Agencies|Danish councils for strategic research funding|09-072118|Swedish Energy Agency||Nordic Energy Research||Swedish Research Council|2009-5307|Department of the New Energy||Industrial Technology Development Organization||

Available from: 2012-05-02 Created: 2012-04-27 Last updated: 2017-12-07

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Jokubavicius, ValdasHens, PhilipYakimova, RositsaSyväjärvi, Mikael

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