Patent · US Active

Process for making powder alloys containing cadmium and selenium

US10026855B2 · kind B2 · utility

3Cited by

3References

21Claims

0Family size

Assignee

First Solar, Inc. · US

Inventors

Shrinivas Govindarajan · Richmond, US
Michael Latusek · Perrysburg, US
Feng Yan · Carouge, CH

Key dates

Filing date	Feb 18, 2016
Grant date	Jul 17, 2018
Priority date	—
Expiry date	Aug 19, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH10F77/121
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A process for preparing alloy products powders is described using a self-sustaining or self-propagating SHS-type combustion process. Binary, ternary and quaternary alloy having cadmium, selenium and optionally a third element X or Y selected from Group VIA (such as S or Te) or from group IIB (such as Zn or Hg). The alloy products may be doped or not with a wide variety of other elements. The process involves heating to ignition, maintaining an elevated temperature less than melting for homogenization, followed by cooling and crushing. An optional de-oxidation process may follow to further purify the alloy and balance the stoichiometry.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.