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Title

High transmission nanowire contact arrays with subwavelength spacing

AuthorsPérez de San Román, Etor; Vitrey, Alan ; Buencuerpo, Jerónimo ; Fernández-Martínez, Iván ; Prieto-González, Iván ; Alén, Benito ; García-Martín, Antonio ; Llorens Montolio, José Manuel ; Brueck, Steven R. J.; Ripalda, José María
KeywordsPhotovoltaics
Plasmonics
Metals
Nanowires
Semiconductors
Contacts
Issue DateFeb-2016
PublisherJohn Wiley & Sons
CitationPhysica Status Solidi - Rapid Research Letters 10(2): 164-167 (2016)
AbstractWe demonstrate high optical transmission in solar cell contacts based on nanowire arrays with subwavelength spacing. The photocurrent results obtained from fabricated devices are compared with numerical simulations. The proposed contact design leads to optical losses significantly smaller than the fraction of the top surface taken up by the metallic contact (<10% vs. 36%). The resulting sheet resistance of the contact is 46.7 Ω/square, comparing favourably with transparent conductive oxides. Normalized electric field magnitude at λ = 887 nm, polarization perpendicular to the nanowires. The black contours indicate the position of the nanowires and the GaAs surface. The reflected wave‐front is undisturbed by the subwavelength array (period = 250 nm), but the transmitted light is strongly scattered in a Talbot effect pattern.
Publisher version (URL)https://doi.org/10.1002/pssr.201510367
URIhttp://hdl.handle.net/10261/181466
DOI10.1002/pssr.201510367
ISSN1862-6254
E-ISSN1862-6270
Appears in Collections:(IMN-CNM) Artículos
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