Method of operating a solar cell
First Claim
1. A method of operating a solar cell having a strain balanced multiple quantum well stack containing greater than thirty quantum wells and disposed between bulk semiconductor regions, a band-gap difference between a band-gap of a deepest well within said strain balanced multiple quantum well stack and a band-gap of said bulk semiconductor regions of the cell outside the multiple quantum well region being greater than 60 meV, said method comprises the steps of:
- receiving incident radiation having an intensity of greater than one hundred suns concentration;
absorbing photons from said incident radiation both within and outside said quantum well stack to generate electron hole pairs;
recombining electrons and holes with a radiative recombination mechanism to form re-radiated photons that are re-absorbable within said solar cell to generate electrical energy;
wherein electrons and holes within said quantum well stack substantially only recombine via said radiative recombination mechanism.
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Accused Products
Abstract
A method of operating a solar cell is provided in which strain balanced multiple quantum well stacks containing greater than 30 quantum wells disposed between bulk semi-conductor regions having a band gap differences between the deepest well of the stack and the bulk semi-conducting region of greater than 60 mev is irradiated with radiation having an intensity of greater than 100 suns. Photons are absorbed with and outside of the quantum well stack to generate electron hole pairs recombination of electrons and holes is substantially only via a radiative recombination mechanism.
93 Citations
22 Claims
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1. A method of operating a solar cell having a strain balanced multiple quantum well stack containing greater than thirty quantum wells and disposed between bulk semiconductor regions, a band-gap difference between a band-gap of a deepest well within said strain balanced multiple quantum well stack and a band-gap of said bulk semiconductor regions of the cell outside the multiple quantum well region being greater than 60 meV, said method comprises the steps of:
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receiving incident radiation having an intensity of greater than one hundred suns concentration;
absorbing photons from said incident radiation both within and outside said quantum well stack to generate electron hole pairs;
recombining electrons and holes with a radiative recombination mechanism to form re-radiated photons that are re-absorbable within said solar cell to generate electrical energy;
whereinelectrons and holes within said quantum well stack substantially only recombine via said radiative recombination mechanism. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification