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Journal of Nanomaterials
Volume 2017, Article ID 4270794, 8 pages
https://doi.org/10.1155/2017/4270794
Research Article

Surface Plasmon Enhanced Light Trapping in Metal/Silicon Nanobowl Arrays for Thin Film Photovoltaics

Department of Physics and Beijing Key Laboratory of Energy Conversion and Storage Materials, Beijing Normal University, Beijing 100875, China

Correspondence should be addressed to Kuiqing Peng; nc.ude.unb@gnep_qk

Received 10 March 2017; Revised 4 June 2017; Accepted 20 June 2017; Published 10 September 2017

Academic Editor: Jorge Pérez-Juste

Copyright © 2017 Ruinan Sun et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Enhancing the light absorption in thin film silicon solar cells with nanophotonic and plasmonic structures is important for the realization of high efficiency solar cells with significant cost reduction. In this work, we investigate periodic arrays of conformal metal/silicon nanobowl arrays (MSNBs) for light trapping applications in silicon solar cells. They exhibited excellent light-harvesting ability across a wide range of wavelengths up to infrared regimes. The optimized structure (MSNBsH) covered by SiO2 passivation layer and hemisphere Ag back reflection layer has a maximal short-circuit density () 25.5 mA/cm2, which is about 88.8% higher than flat structure counterpart, and the light-conversion efficiency () is increased two times from 6.3% to 12.6%. The double-side textures offer a promising approach to high efficiency ultrathin silicon solar cells.