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US 9,070,811 B2Granted
Multi-crystalline II-VI based multijunction solar cells and modules
AssigneePLANT PV, Inc.
InventorsBrian E Hardin, Stephen T Connor, James R Groves, Craig H Peters
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Abstract
Multi-crystalline group II-VI solar cells and methods for fabrication of same are disclosed herein. A multi-crystalline group II-VI solar cell includes a first photovoltaic sub-cell comprising silicon, a tunnel junction, and a multi-crystalline second photovoltaic sub-cell. A plurality of the multi-crystalline group II-VI solar cells can be interconnected to form low cost, high throughput flat panel, low light concentration, and/or medium light concentration photovoltaic modules or devices.
Claims17
A monolithic, multijunction solar cell, comprising:
- a first photovoltaic sub-cell;
- a tunnel junction provided over the first photovoltaic sub-cell, the tunnel junction including a single crystal II-VI semiconductor material layer having a band gap greater than 1.5 eV;
- and
- a second photovoltaic sub-cell provided over the tunnel junction, the second photovoltaic sub-cell including a multi-crystalline group II-VI semiconductor material base comprised of CdSe and a multi-crystalline group II-VI semiconductor material emitter having band gaps greater than 1.5 eV, wherein light incident on the monolithic, multijunction solar cell is received by the second photovoltaic sub-cell before the first photovoltaic sub-cell.
1 more element
Dependencies are inferred from the claim text.