NON-LATITUDE AND VERTICALLY MOUNTED SOLAR ENERGY CONCENTRATORS
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United States of America Patent
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Issued Date -
Nov 28, 2013
app pub date -
May 2, 2013
filing date -
May 2, 2012
priority date (Note) -
Abandoned
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Abstract
A solar-energy concentrator optimized for operating in a substantially vertical orientation and method for collecting sunlight with such concentrator. The concentrator includes a photovoltaic (PV) module having a PV cell and layers containing diffraction gratings that may be spatially stacked or multiplexed. Diffraction gratings define corresponding diffraction patterns optimized for solar energy harvesting depending on which direction the concentrator is facing. Additionally, a method of designing a hologram for concentrating solar energy onto an adjacent photovoltaic chip is provided. The method includes selecting a photovoltaic chip material, selecting a photovoltaic cell geometry, selecting a first construction angle, selecting an installation latitude, selecting an installation tilt angle, and modeling hologram performance as a function of a second construction angle and a design wavelength.
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