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Proceedings Paper

Absorbing photonic crystals for thin film photovoltaics
Author(s): O. El Daif; E. Drouard; G. Gomard; X. Meng; A. Kaminski; A. Fave; M. Lemiti; E. Garcia Cavrel; P. Roca i Cabarrocas; S. Ahn; H. Jeon; C. Seassal
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Paper Abstract

The absorption of thin hydrogenated amorphous silicon layers can be efficiently enhanced through a controlled periodic patterning. Light is trapped through coupling with photonic Bloch modes of the periodic structures, which act as an absorbing planar photonic crystal. We theoretically demonstrate this absorption enhancement through one or two dimensional patterning, and show the experimental feasibility through large area holographic patterning. Numerical simulations show over 50% absorption enhancement over the part of the solar spectrum comprised between 380 and 750nm. It is experimentally confirmed by optical measurements performed on planar photonic crystals fabricated by laser holography and reactive ion etching.

Paper Details

Date Published: 14 May 2010
PDF: 6 pages
Proc. SPIE 7713, Photonic Crystal Materials and Devices IX, 771308 (14 May 2010); doi: 10.1117/12.854035
Show Author Affiliations
O. El Daif, Institut des Nanotechnologies de Lyon, Univ. de Lyon, CNRS (France)
Ecole Centrale de Lyon (France)
INSA Lyon (France)
E. Drouard, Institut des Nanotechnologies de Lyon, Univ. de Lyon, CNRS (France)
Ecole Centrale de Lyon (France)
G. Gomard, Institut des Nanotechnologies de Lyon, Univ. de Lyon, CNRS (France)
Ecole Centrale de Lyon (France)
INSA Lyon (France)
X. Meng, Institut des Nanotechnologies de Lyon, Univ. de Lyon, CNRS (France)
Ecole Centrale de Lyon (France)
INSA Lyon (France)
A. Kaminski, INSA Lyon (France)
Institut des Nanotechnologies de Lyon, Univ. de Lyon, CNRS (France)
A. Fave, INSA Lyon (France)
Institut des Nanotechnologies de Lyon, Univ. de Lyon, CNRS (France)
M. Lemiti, INSA Lyon (France)
Institut des Nanotechnologies de Lyon, Univ. de Lyon, CNRS (France)
E. Garcia Cavrel, LPICM, CNRS (France)
Ecole Polytechnique (France)
P. Roca i Cabarrocas, LPICM, CNRS (France)
Ecole Polytechnique (France)
S. Ahn, Seoul National Univ. (Korea, Republic of)
H. Jeon, Seoul National Univ. (Korea, Republic of)
C. Seassal, Ecole Centrale de Lyon (France)
Institut des Nanotechnologies de Lyon, Univ. de Lyon, CNRS (France)


Published in SPIE Proceedings Vol. 7713:
Photonic Crystal Materials and Devices IX
Hernán R. Míguez; Sergei G. Romanov; Lucio Claudio Andreani; Christian Seassal, Editor(s)

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