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Efficient post passivation light-management concepts for silicon heterojunction solar cells

Smeets, Michael; Meier, Matthias; Lentz, Florian; Ding, Kaining; Paetzold, Ulrich Wilhelm; Bittkau, Karsten

Abstract (englisch):
In the present work, we investigate light-management concepts applied subsequent to the passivation of the Si wafer of planar Si heterojunction solar cells. As a first concept, we apply amorphous silicon based nanophotonic textures at the back side of the Si wafer to realize efficient light trapping. As a second concept, we use a nanoimprint lithography based front side anti-reflection coating to improve the incoupling of light into the solar cell absorber. Both concepts allow for efficient improvements in the short-circuit current densities without degrading the planar passivation layers. As the highlight of this work, we demonstrate planar silicon heterojunction solar cells (thickness ∼ 280 μm) with high passivation quality as well as a short-circuit current density of 38.8 mA/cm2.

Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Publikationstyp Proceedingsbeitrag
Jahr 2016
Sprache Englisch
Identifikator DOI: 10.1109/PVSC.2016.7750207
ISBN: 978-1-5090-2724-8
KITopen ID: 1000062635
HGF-Programm 43.23.04; LK 01
Erschienen in 2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC), Portland, OR, June 5-10 2016
Verlag IEEE, Piscataway, NJ
Seiten 2975–2979
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