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Highly efficient industrial large-area black silicon solar cells achieved by surface nanostructured modification.
- Source :
-
Applied Surface Science . Dec2015 Part B, Vol. 357, p1830-1835. 6p. - Publication Year :
- 2015
-
Abstract
- Traditional black silicon solar cells show relatively low efficiencies due to the high surface recombination occurring at the front surfaces. In this paper, we present a surface modification process to suppress surface recombination and fabricate highly efficient industrial black silicon solar cells. The Ag-nanoparticle-assisted etching is applied to realize front surface nanostructures on silicon wafers in order to reduce the surface reflectance. Through a further tetramethylammonium hydroxide (TMAH) treatment, the carrier recombination at and near the surface is greatly suppressed, due to a lower surface dopant concentration after the surface modification. This modified surface presents a low reflectivity in a range of 350–1100 nm. Large-area solar cells with an average conversion efficiency of 19.03% are achieved by using the TMAH treatment of 30 s. This efficiency is 0.18% higher than that of standard silicon solar cells with pyramidal surfaces, and also a remarkable improvement compared with black silicon solar cells without TMAH modifications. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01694332
- Volume :
- 357
- Database :
- Academic Search Index
- Journal :
- Applied Surface Science
- Publication Type :
- Academic Journal
- Accession number :
- 111440544
- Full Text :
- https://doi.org/10.1016/j.apsusc.2015.10.035