Photovoltaic cells with improved thermal stability

Details Photovoltaic cells with improved thermal stability Photovoltaic cells with improved thermal stability

1990-09-24

1991-12-24

Weisstuch, Aaron

Batteries: thermoelectric and photoelectric

Photoelectric

Panel or array

136256, 437 2, 437180, 437205, 437209, 228179, H01L 3105, H01L 3118

Patent

active

050749200

ABSTRACT:
Photovoltaic cells with silver-rich thick film electrical contacts and superior thermal aging properties are disclosed. Electrical wires are bonded to the silver-rich thick film contacts using a tin and silver solder paste comprising between about 96% tin/4% silver and 98% tin/2% silver. Solar cells having soldered connections incorporating the present invention exhibit the capabilty of withstanding temperatures in the range of 150.degree. C. with little or no deterioration of the solder bonds for periods far longer than conventionally prepared cells.

REFERENCES:
patent: 3411952 (1968-11-01), Ross et al.
patent: 3574925 (1971-04-01), Schneider et al.
patent: 3769091 (1973-10-01), Leinkram et al.
patent: 4173820 (1979-11-01), Mueller et al.
E. J. Stofel et al, Conference Record, 17th IEEE Photovoltaic Specialists Conference, (1984), pp. 173-178.
J. Zhao et al, Solar Cells, vol. 28, pp. 193-197 (1990).
H. S. Rauschenbach, "Solar Cell Array Design Handbook", Van Nostrand Reinhold Co. (1980), p. 463.

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