Publication: Boosting ultrathin aSi-H solar cells absorption through a nanoparticle cross-packed metasurface
Loading...
Identifiers
Publication date
2020-05-15
Defense date
Advisors
Tutors
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Impact
Export
Abstract
Hydrogenated amorphous silicon (a-Si:H) solar cells have some performance limitations related to the mobility and lifetime of their carriers. For this reason, it is interesting to explore thin-film solutions, achieving a tradeoff between photons optical absorption and the electrical path of the carriers to get the optimum thickness. In this work, we propose the insertion of a metasurface based on a cross-patterned ITO contact film, where the crosses are filled with nanospheres. We numerically demonstrate that this configuration improves the photogenerated current up to a 40% by means of the resonant effects produced by the metasurface, being independent on the impinging light polarization. Light handling mechanisms guide light into the active and auxiliary layers, increasing the effective absorption and mitigating the Staebler-Wronski effect. The selection of optimum materials and parameters results in nanospheres of ZnO with a 220 nm radius.
Description
Keywords
Hydrogenated solar cell, Nanostructure, Metasurface, Absorption enhancement, Short-circuit current
Bibliographic citation
Elshorbagy, M. H., López-Fraguas, E., Sánchez-Pena, J. M., García-Cámara, B. & Vergaz, R. (2020). Boosting ultrathin aSi-H solar cells absorption through a nanoparticle cross-packed metasurface. Solar Energy, 202, 10–16.