GB1156204A - Improvements in and relating to Semiconductor Devices - Google Patents

Abstract

1,156,204. Thermoelectric devices. G. V. PLANER Ltd. 5 Oct., 1966 [6 July, 1965], No. 28665/65. Heading H1K. The ends of a plurality of pairs of adjacent but separated semi-conductor elements of an element stack for a thermoelectric generator or refrigerator device, are connected electrically by bridging each of the gaps between the ends of the elements to be connected with an electrically conductive cement while leaving the other gaps between adjacent elements untreated and then electrolytically depositing separate layers of electrically conductive material across the ends of said pairs over the cement bridges. Semiconductor elements 10 separated by insulating material 12 are conductively joined by cement 13 consisting of a slurry or paste of a ceramic or glass binder containing a dispersion of graphite, Ni, Fe, Pt, Pd, Mo, W, SiC or reduced TiO 2 . An electroplated layer 15 of Ni, Fe, Pt, Pd or Rh is applied and then a layer 16 of Cu. In an alternative embodiment (Fig. 2, not shown), a thick conductive layer (14) is applied in place of layers 15 and 16. In another embodiment (Fig. 4, not shown) cups of Fe or Ni are embedded in the ends of the elements. The elements may be of PbTe, PbSnTe 2 , GeTe, AgSbTe 2 or mixtures thereof.