Front surface metallization and encapsulation of solar cells

Details Front surface metallization and encapsulation of solar cells Front surface metallization and encapsulation of solar cells

1981-09-14

1983-04-19

Weisstuch, Aaron

Metal working

Method of mechanical manufacture

Assembling or joining

29399, H01L 3118

Patent

active

043801129

ABSTRACT:
Method and apparatus for the front surface metallization and encapsulation of solar cells of the type comprising p and n semiconductor strata separated by a barrier junction, and front and rear conducting strata constituting electrical contacts, wherein the front conducting stratum is a novel metallic grid permitting transmission of solar radiation to the semiconductor strata. This metallic grid is in the form of a mesh of wires of sufficiently high tensile strength to be self-supporting while being drawn from spools or the like into contact with one or more components of the solar cell before completion of the cells's fabrication.
The method is characterized in that the metallic grid, in the form of the mesh of wires, is encapsulated between a transparent cover plate and the exposed front surface of the semiconductor strata, the mesh forming an electrical contact with the front surface of the semiconductor strata simultaneously that the plate is electrostatically bonded thereto.
The apparatus is preferably automated and conveyorized.

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G. A. Landis et al., "A Low-Cost Solar-Cell Front Contact Using Trapped Silver Mesh & Electrostatic Bonding", IEEE Trans. Comp. Hybrids & Mfr. Tech., vol. CHMT-2, pp. 350-355, (1979).
J. A. Minnucci et al., "Integral Glass Sheet Encapsulation for Terrestrial Panel Applications", Conf. Record, 12th IEEE, Conf. (1976), pp. 309-312.
A. R. Kirkpatrick et al., "Status of Electrostatically Bonded Integral Covers . . ." Conf. Record, 12th IEEE Conf., (1976), pp. 573-576.
A. R. Kirkpatrick et al., "Production Technology for High Efficiency ion Implanted Solar Cells", Conf. Rec. 13th IEEE Conf., (1978), pp. 706-710.
P. R. Younger et al., "Terrestrial Solar Arrays with Intergral Glass Construction", Conf. Rec. 13th IEEE Conf., (1978), pp. 729-732.

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