Composition and method for encapsulating a solar cell which mini

Details Composition and method for encapsulating a solar cell which mini Composition and method for encapsulating a solar cell which mini

1992-08-03

1995-09-05

Weisstuch, Aaron

Batteries: thermoelectric and photoelectric

Photoelectric

Cells

136251, 437 2, 437219, 437224, 437211, 257789, H01L 31048

Patent

active

054475767

ABSTRACT:
A composition and method for encapsulating a solar cell which minimizes thermal discoloration, or browning, of the encapsulant. The composition includes an EVA encapsulant, a curing agent and one of two particularly well-suited hindered amine light stabilizers, either O,O-t-Amyl-O-(1,2,2,6,6-Pentamethyl-4-piperidinyl) mono-peroxycarbonate or Poly[(4-hydroxy-2,2,6,6-tetramethyl-1-piperidine-ethanol)-co-dimethyl succinate]. Alternatively, if the selected hindered amine light stabilizer is O,O-t-Amyl-O-(1,2,2,6,6-Pentamethyl-4-piperidinyl) mono-peroxycarbonate, the curing agent need not be included. The composition is applied to a solar cell then cured. The cured product withstands thermal exposure and resists thermal discoloration.

REFERENCES:
patent: 4499658 (1985-02-01), Lewis
A. Desombre et al, Proceedings 4th E.C. Photovoltaic Solar Energy Conf. May 1982, pp. 377-381.
J. H. Wohlegemuth et al, Solar Cells, vol. 30, pp. 383-387, May 1991.

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