Photovoltaic multi-junction wavelength compensation system...

Details Photovoltaic multi-junction wavelength compensation system... Photovoltaic multi-junction wavelength compensation system...

2011-02-22

2011-02-22

Michener, Jennifer K (Department: 1728)

Batteries: thermoelectric and photoelectric

Photoelectric

Cells

C307S086000

Reexamination Certificate

active

07893349

ABSTRACT:
Systems and methods are disclosed for current loss compensation in multi-junction photovoltaic cells. The use of direct electrical contact with the interconnect layers in a multi-junction PV cell can improve cell efficiency over variable lighting conditions. Electrical contact with some or all of the interconnect layers can advantageously permit disconnection of subcells operating at low current or voltage. The result is multi-junction PV cells that can adapt to variable lighting conditions and compensate for a decrease in current in certain subcells, thereby advantageously improving a multi-junction PV cell's total output current.

REFERENCES:
patent: 2003/0159728 (2003-08-01), Berry
patent: 2008/0245406 (2008-10-01), Yamazaki et al.
patent: 2009/0020149 (2009-01-01), Woods et al.

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