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Enhanced Photon Management of Thin‐Film Silicon Solar Cells Using Inverse Opal Photonic Crystals with 3D Photonic Bandgaps
Author(s) -
Varghese Leo T.,
Xuan Yi,
Niu Ben,
Fan Li,
Bermel Peter,
Qi Minghao
Publication year - 2013
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201300254
Subject(s) - materials science , photonic crystal , photonics , silicon , optoelectronics , inverse , reflector (photography) , optics , photon , engineering physics , physics , light source , geometry , mathematics
Experimental demonstration of silicon inverse opal photonic crystals (PhCs) as a wave‐optics‐based back reflector for polycrystalline silicon solar cells is shown. Using a novel S 5 process, crack‐free three dimensional PhCs are fabricated, which are free‐standing and have good optical properties. An efficiency enhancement of 10% is measured for 1.5 μm‐thick commercial silicon solar cells, matching reasonably well with simulations.