1. Light trapping in ZnO nanowire arrays covered with an absorbing shell for solar cells
- Author
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Mauro Zanuccoli, Anne Kaminski-Cachopo, Jérôme Michallon, Alain Morand, Davide Bucci, Vincent Consonni, Jerome Michallon, Davide Bucci, Alain Morand, Mauro Zanuccoli, Vincent Consonni, Anne Kaminski-Cachopo, Institut de Microélectronique, Electromagnétisme et Photonique - Laboratoire d'Hyperfréquences et Caractérisation (IMEP-LAHC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire des matériaux et du génie physique (LMGP ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), European Project: 257375,ICT,FP7-ICT-2009-5,NANOFUNCTION(2010), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Institut National Polytechnique de Grenoble (INPG)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Diffraction ,Materials science ,business.industry ,Nanowire ,SOLAR CELLS ,Physics::Optics ,[CHIM.MATE]Chemical Sciences/Material chemistry ,NANOWIRES ,Condensed Matter::Mesoscopic Systems and Quantum Hall Effect ,7. Clean energy ,Ray ,Atomic and Molecular Physics, and Optics ,Wavelength ,Condensed Matter::Materials Science ,Optics ,Absorptance ,Optoelectronics ,NUMERICAL SIMULATION ,Absorption (electromagnetic radiation) ,business ,Rigorous coupled-wave analysis ,Refractive index - Abstract
International audience; The absorption properties of ZnO nanowire arrays covered with a semiconducting absorbing shell for extremely thin absorber solar cells are theoretically investigated by optical computations of the ideal short-circuit current density with three-dimensional rigorous coupled wave analysis. The effects of nanowire geometrical dimensions on the light trapping and absorption properties are reported through a comprehensive optical mode analysis. It is shown that the high absorptance of these heterostructures is driven by two different regimes originating from the combination of individual nanowire effects and nanowire arrangement effects. In the short wavelength regime, the absorptance is likely dominated by optical modes efficiently coupled with the incident light and interacting with the nearby nanowires (i.e. diffraction), induced by the period of core shell ZnO nanowire arrays. In contrast, in the long wavelength regime, the absorptance is governed by key optically guided modes, related to the diameter of individual core shell ZnO nanowires.
- Published
- 2014
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