Electrodes for solid state devices

Details Electrodes for solid state devices Electrodes for solid state devices

1981-11-25

1983-06-14

Smith, John D.

Coating processes

Electrical product produced

427 75, 427 88, 427 96, 427216, 427217, 427226, 4273766, 4273767, 427436, 427437, H05K 312

Patent

active

043883460

ABSTRACT:
Contact electrodes on a semiconductor device (50) such as a photovoltaic solar cell is formed by screening through a mask (38) onto a surface (40) a pattern of ink containing a dispersion of lower melting, sinterable metal (tin) coated base metal (copper) particles dispersed in a liquid vehicle including a vaporizable binder polymer and a fluorocarbon polymer. On firing the screen coated device (46) in an oven (48) the binder polymer is vaporized, the fluorocarbon vapors etch the surface and the coated metal particles sinter without being oxidized to form an adherent, coherent, contact electrode (53).

REFERENCES:
patent: 4219448 (1980-08-01), Ross
patent: 4235644 (1980-11-01), Needes
patent: 4336281 (1980-06-01), von Mourik

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