Journal ArticleDOI
Semiconductor Nanowire Optical Antenna Solar Absorbers
Linyou Cao,Pengyu Fan,Alok P. Vasudev,Justin S. White,Zongfu Yu,Wenshan Cai,Jon A. Schuller,Shanhui Fan,Mark L. Brongersma +8 more
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TLDR
It is proposed that by patterning the silicon layer in a thin film PV cell into an array of NWs, one can boost the absorption for solar radiation by 25% while utilizing less than half of the semiconductor material (250% increase in the light absorption per unit volume of material).Abstract:
Photovoltaic (PV) cells can serve as a virtually unlimited clean source of energy by converting sunlight into electrical power. Their importance is reflected in the tireless efforts that have been devoted to improving the electrical and structural properties of PV materials. More recently, photon management (PM) has emerged as a powerful additional means to boost energy conversion efficiencies. Here, we demonstrate an entirely new PM strategy that capitalizes on strong broad band optical antenna effects in one-dimensional semiconductor nanostructures to dramatically enhance absorption of sunlight. We show that the absorption of sunlight in Si nanowires (Si NWs) can be significantly enhanced over the bulk. The NW’s optical properties also naturally give rise to an improved angular response. We propose that by patterning the silicon layer in a thin film PV cell into an array of NWs, one can boost the absorption for solar radiation by 25% while utilizing less than half of the semiconductor material (250% inc...read more
Citations
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Journal ArticleDOI
Optically resonant dielectric nanostructures
Arseniy I. Kuznetsov,Andrey E. Miroshnichenko,Mark L. Brongersma,Yuri S. Kivshar,Boris Luk'yanchuk,Boris Luk'yanchuk +5 more
TL;DR: How high-index dielectric nanoparticles can offer a substitute for plasmonic nanoparticle structures, providing a highly flexible and low-loss route to the manipulation of light at the nanoscale is reviewed.
Journal ArticleDOI
Dielectric gradient metasurface optical elements.
TL;DR: The experimental realization and operation of dielectric gradient metasurface optical elements capable of also achieving high efficiencies in transmission mode in the visible spectrum are described.
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Demonstration of Magnetic Dipole Resonances of Dielectric Nanospheres in the Visible Region
Andrey B. Evlyukhin,Sergey M. Novikov,Urs Zywietz,René Lynge Eriksen,Carsten Reinhardt,Sergey I. Bozhevolnyi,Boris N. Chichkov +6 more
TL;DR: Due to high permittivity, the magnetic dipole resonance is observed in the visible spectral range for Si nanoparticles with diameters of ∼200 nm, thereby opening a way to the realization of isotropic optical metamaterials with strong magnetic responses in thevisible region.
Journal ArticleDOI
Nanoantennas for visible and infrared radiation.
TL;DR: The role of plasmonic resonances on the performance of nanoantennas and the influence of geometrical parameters imposed by nanofabrication are discussed.
Journal ArticleDOI
Light management for photovoltaics using high-index nanostructures.
TL;DR: This Review discusses some of the recent developments in the design and implementation of such photonic elements in thin-film photovoltaic cells, including nanoscale wires, particles and voids.
References
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Book
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TL;DR: In this paper, E.D. Palik and R.R. Potter, Basic Parameters for Measuring Optical Properties, and W.W.Hunter, Measurement of Optical Constants in the Vacuum Ultraviolet Spectral Region.
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Journal ArticleDOI
Coaxial silicon nanowires as solar cells and nanoelectronic power sources
Bozhi Tian,Xiaolin Zheng,Thomas J. Kempa,Ying Fang,Nanfang Yu,Guihua Yu,Jinlin Huang,Charles M. Lieber +7 more
TL;DR: These coaxial silicon nanowire photovoltaic elements provide a new nanoscale test bed for studies of photoinduced energy/charge transport and artificial photosynthesis, and might find general usage as elements for powering ultralow-power electronics and diverse nanosystems.
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Toward Cost-Effective Solar Energy Use
TL;DR: New developments in nanotechnology, biotechnology, and the materials and physical sciences may enable step-change approaches to cost-effective, globally scalable systems for solar energy use.