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Broadband anti-reflection coating using dielectric Si3N4 nanostructures. Application to amorphous-Si-H solar cells

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Elshorbagy, Mahmoud Hamdy Mohamed and Abdel-Hady, Kamal and Kamal, Hala and Alda, Javier (2017) Broadband anti-reflection coating using dielectric Si3N4 nanostructures. Application to amorphous-Si-H solar cells. Optics Communications, 390 . pp. 130-136. ISSN 0030-4018

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Official URL: http://dx.doi.org/10.1016/j.optcom.2016.12.062




Abstract

Absorption of amorphous-Si hydrogenated (aSi-H) solar cells can be enhanced by using dielectric nanostructures made of Si3N4 that work like antireflection coatings. The analysis focus on the short-circuit current delivered by the cell under solar irradiance, and it is made taking into account every layer and structure of an aSi-H cell. A customized design of the antireflection coating in the form of nanostructured dielectric layers, produces a short-circuit current enhancement of 15.2% with respect to the reference flat solar cell, and a lower reflectivity of the cell. Three different geometries of linear nanostructures have been analyzed and compared with quite similar results among them. An improvement in performance has been also obtained for realizable geometrical dimensions that could be fabricated while maintaining electric conductivity of the front contact.


Item Type:Article
Additional Information:

Received 24 October 2016, Revised 17 November 2016, Accepted 26 December 2016, Available online 7 January 2017

Uncontrolled Keywords:Resonant structures; Anti-reflection coating; Light trapping; Solar cell
Subjects:Sciences > Physics > Electricity
Sciences > Physics > Optics
ID Code:40747
Deposited On:20 Jan 2017 11:13
Last Modified:07 Jan 2019 00:01

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