Photovoltaic cell manufacture
US4082602A · kind A · utility
2Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 1977 |
| Grant date | Apr 4, 1978 |
| Priority date | — |
| Expiry date | May 2, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S136/29
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A quality control technique is based on the observation that trapping centers contribute to inefficient operation of junction devices. Devices are irradiated by a first radiation source of intensity sufficient to populate traps and a second radiation source of varying wavelength. Trapping centers are detected by a deviation from the expected photovoltaic output-incident wavelength relationship. Such "structure" is utilized as the basis for altering production conditions to minimize currents of such centers. While the procedure is of general applicability, it is particularly suitable as applied to photovoltaic cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.