Photovoltaic cell manufacture

Details Photovoltaic cell manufacture Photovoltaic cell manufacture

H - Electricity

01

L

356/192, 345/22

H01L 21/66 (2006.01) H01G 9/20 (2006.01) H01L 31/02 (2006.01)

Patent

CA 1086409

PHOTOVOLTAIC CELL MANUFACTURE Abstract of the Disclosure 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.

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