Broadband and omnidirectional light harvesting enhancement of fluorescent SiC
2012 (English)In: Optics Express, ISSN 1094-4087, Vol. 20, no 7, 7575-7579 p.Article in journal (Refereed) Published
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 CategoryEngineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-76953DOI: 10.1364/OE.20.007575ISI: 000302138800075OAI: oai:DiVA.org:liu-76953DiVA: diva2:524358
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||2012-05-022012-04-272013-05-07