[en] We numerically study complex dual-interface grating systems to enhance absorption efficiency in thin-film
silicon solar cells. We combine a plasmonic grating at the back side of the solar cell with a dielectric grating
at the front side of the cell. We show a proof of principle, with one-dimensional gratings, that the distinctly
different nature of the gratings can provide complementary enhancement mechanisms, which we further exploit
by tailoring the specific periodicities, and by introducing blazing. Having different periods at specific interfaces
allows for more efficient diffraction into both plasmonic and dielectric guided modes. In addition, grating specific
blazing exposes extra modes to normal incident light through symmetry breaking. Multiple optimization routes
are possible depending on the choice of photonic phenomena.
Research center :
CRPM - Physique des matériaux
Disciplines :
Materials science & engineering Physics
Author, co-author :
Abass, Aimi
Le, Khai Q.
Alu, Andrea
Burgelman, Marc
Maes, Bjorn ; Université de Mons > Faculté des Sciences > Matériaux Micro et Nanophotoniques
Language :
English
Title :
Dual-interface gratings for broadband absorption enhancement in thin-film solar cells
Publication date :
30 March 2012
Journal title :
Physical Review. B, Condensed Matter
ISSN :
0163-1829
Publisher :
American Physical Society, Moldova
Volume :
85
Issue :
11
Pages :
115449
Peer reviewed :
Peer Reviewed verified by ORBi
Research unit :
S803 - Matériaux Micro- et Nanophotoniques
Research institute :
R400 - Institut de Recherche en Science et Ingénierie des Matériaux R150 - Institut de Recherche sur les Systèmes Complexes R200 - Institut de Recherche en Energie
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