Photovoltaic cell manufacture

Details Photovoltaic cell manufacture Photovoltaic cell manufacture

1977-05-02

1978-04-04

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156655, 156662, H01L 21306

Patent

active

040826023

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.

REFERENCES:
patent: 3150021 (1964-09-01), Sato
patent: 3874959 (1975-04-01), Hoekstra et al.
patent: 4039370 (1977-08-01), Kleinknecht

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