Method of manufacture of chalcogenide-based photovoltaic cells
US9356177B2 · kind B2 · utility
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2References
6Claims
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Key dates
| Filing date | Apr 28, 2011 |
| Grant date | May 31, 2016 |
| Priority date | — |
| Expiry date | Jul 24, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
The invention is a method of forming a cadmium sulfide based buffer on a copper chalcogenide based absorber in making a photovoltaic cell. The buffer is sputtered at relatively high pressures. The resulting cell has good efficiency and according to one embodiment is characterized by a narrow interface between the absorber and buffer layers. The buffer is further characterized according to a second embodiment by a relatively high oxygen content.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.