Nanostructured Solar Cells Utilizing Charge Plasma
AssigneeNanograss Solar LLC
InventorBahram Nabet
Life of this patent
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Abstract
A device includes a generally planar substrate and a plurality of light absorbing elements extending outwardly from the substrate. Each of the light absorbing elements includes a doped outer shell, an inner core disposed inside the outer shell and a two-dimensional electron gas sheet extending and confined between the outer shell and the inner core, with a concentric cylinder of two-dimensional electron or hole gas produced in the junction between the outer shell and the inner core.
Claims27
A device comprising:
- (a) a generally planar substrate;
- and
- (b) a plurality of light absorbing elements extending outwardly from the substrate, each of the light absorbing elements comprising:
- (i) a doped outer shell;
- (ii) an inner core disposed inside the outer shell;
- and
- (iii) a two-dimensional charge gas sheet extending and confined between the outer shell and the inner core.
The device according to claim 6, wherein the size of the generally faceted cross-section decreases as the distance of the generally faceted cross-section from the substrate increases.
The device according to claim 10, wherein the inner core is comprised of a first material and wherein the outer core is comprised of the first material.
A solar cell comprising:
- (a) a substrate;
- and
- (b) a plurality of nano wires extending outwardly from the substrate, each of the plurality of nano wires comprising:
- (i) a generally cylindrical inner core comprised of gallium arsenide;
- (ii) an outer shell disposed around the inner core, the outer shell being comprised of aluminum gallium arsenide;
- and
- (iii) a generally tubular two-dimensional electron gas sheet extending and confined between the inner core and the outer shell.
A solar cell comprising:
- (a) a generally planar substrate;
- (b) a plurality of nano wires extending outwardly from the planar substrate, each of the plurality of nano wires comprising:
- (i) an inner core;
- (ii) an outer shell disposed around inner core, the outer shell having a first end attached to the substrate and a second end disposed away from the substrate;
- and
- (iii) a generally tubular two-dimensional electron gas sheet extending and confined between the inner core and the outer shell;
- (c) an n+ contact affixed to the first end of the outer shell;
- and
- (d) a Schottky contact disposed at the second end of each of the plurality of nano wires.
Dependencies are inferred from the claim text.