Journal
OPTICS EXPRESS
Volume 20, Issue 1, Pages A125-A132Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.20.00A125
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Funding
- Center for Energy Nanoscience, an Energy Frontiers Research Center
- U.S. Department of Energy Office of Science, Office of Basic Energy Sciences [DE-SC0001013]
- USC Annenberg
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We carry out a systematic numerical study of the effects of aperiodicity on silicon nanorod anti-reflection structures. We use the scattering matrix method to calculate the average reflection loss over the solar spectrum for periodic and aperiodic arrangements of nanorods. We find that aperiodicity can either improve or deteriorate the anti-reflection performance, depending on the nanorod diameter. We use a guided random-walk algorithm to design optimal aperiodic structures that exhibit lower reflection loss than both optimal periodic and random aperiodic structures. (C)2011 Optical Society of America
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