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Title:
 
2D Periodic Photonic Nanostructures Integrated in 40 µm Thin Crystalline Silicon Solar Cells
 
Author(s):
 
C. Trompoukis, O. El Daif, V. Depauw, T. Bearda, K. Van Nieuwenhuysen, J. Govaerts, H. Sivaramakrishnan Radhakrishnan, R. Martini, S. Granata, I. Gordon, R. Mertens, J. Poortmans
 
Keywords:
 
a-Si, c-Si, Heterojunction, Light Trapping, Optical Properties
 
Topic:
 
THIN FILM SOLAR CELLS
Subtopic: Silicon-based Thin Film Solar Cells
Event: 29th European Photovoltaic Solar Energy Conference and Exhibition
Session: 3DV.4.37
 
Pages:
 
1952 - 1954
ISBN: 3-936338-34-5
Paper DOI: 10.4229/EUPVSEC20142014-3DV.4.37
 
Price:
 
 
0,00 EUR
 
Document(s): paper
 

Abstract/Summary:


Two-dimensional (2D) periodic photonic nanostructures are fabricated by nanoimprint lithography (NIL) and dry plasma (Dry-NIL) etching on 40 μm thick epitaxially-grown crystalline silicon (c-Si) foils, resulting in nanostructures with a parabolic profile. These nanostructures are integrated in a 40 μm thick double side contacted c-Si/aSi:H heterojunction solar cell architecture. The front side is processed when the foil is attached to the parent substrate while the back side is processed when the foil is bonded to the glass carrier. Although the efficiency of the nanopatterned cell was lower compared to the random pyramid textured cells it had a better absorption and spectral response for long wavelengths, highlighting a better light trapping behavior.