Semiconductor materials

Details Semiconductor materials Semiconductor materials

1982-06-25

1983-11-15

Rutledge, L. Dewayne

Alloys or metallic compositions

Lead base

Alkali, alkaline earth metal or magnesium containing

420903, C01C 1500

Patent

active

044155310

ABSTRACT:
A novel pseudobinary alloy of Pb.sub.1-x M.sub.x S, wherein 0<x<1 and M is selected from the group consisting of Sr and Ca, exists as a single phase at all compositions. With change in composition of Pb.sub.1-x Sr.sub.x S, the energy gap at 300K has been found to change continuously from 0.4 eV for PbS to 4.6 eV for SrS. For compositions with x.ltoreq.0.2, p-type and n-type thin films have been prepared by doping with Tl or Ag and with Bi, respectively. Similar single phase behavior and composition dependence of the energy gap is found with Pb.sub.1-x Ca.sub.x S.

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Holloway et al., "Lead Stronium and Lead Calcium Sulfide, Two New Alloy Semiconductors", American Physical Society, pp. 5617-5622, 7/12/82.

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