Plasmonic Nanostructure Design for Efficient Light Coupling into Solar Cells. Ferry, V. E., Sweatlock, L. A., Pacifici, D., & Atwater, H. A. Nano Letters, 8(12):4391--4397, December, 2008. ![Plasmonic Nanostructure Design for Efficient Light Coupling into Solar Cells [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex We demonstrate that subwavelength scatterers can couple sunlight into guided modes in thin film Si and GaAs plasmonic solar cells whose back interface is coated with a corrugated metal film. Using numerical simulations, we find that incoupling of sunlight is remarkably insensitive to incident angle, and that the spectral features of the coupling efficiency originate from several different resonant phenomena. The incoupling cross section can be spectrally tuned and enhanced through modification of the scatterer shape, semiconductor film thickness, and materials choice. We demonstrate that, for example, a single 100 nm wide groove under a 200 nm Si thin film can enhance absorption by a factor of 2.5 over a 10 μm area for the portion of the solar spectrum near the Si band gap. These findings show promise for the design of ultrathin solar cells that exhibit enhanced absorption.
@article{ferry_plasmonic_2008,
title = {Plasmonic {Nanostructure} {Design} for {Efficient} {Light} {Coupling} into {Solar} {Cells}},
volume = {8},
url = {http://dx.doi.org/10.1021/nl8022548},
doi = {10.1021/nl8022548},
abstract = {We demonstrate that subwavelength scatterers can couple sunlight into guided modes in thin film Si and GaAs plasmonic solar cells whose back interface is coated with a corrugated metal film. Using numerical simulations, we find that incoupling of sunlight is remarkably insensitive to incident angle, and that the spectral features of the coupling efficiency originate from several different resonant phenomena. The incoupling cross section can be spectrally tuned and enhanced through modification of the scatterer shape, semiconductor film thickness, and materials choice. We demonstrate that, for example, a single 100 nm wide groove under a 200 nm Si thin film can enhance absorption by a factor of 2.5 over a 10 μm area for the portion of the solar spectrum near the Si band gap. These findings show promise for the design of ultrathin solar cells that exhibit enhanced absorption.},
number = {12},
urldate = {2010-07-02TZ},
journal = {Nano Letters},
author = {Ferry, Vivian E. and Sweatlock, Luke A. and Pacifici, Domenico and Atwater, Harry A.},
month = dec,
year = {2008},
pages = {4391--4397}
}
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