silver selenide

Does any one have or know where to purchase high purity bulk silver(I)
selenide Ag2Se ?

Thanks,
Shibing
--
Shibing Wang

Postdoctoral Scholar
Geological and Environmental Sciences
Stanford University

450 Serra Mall
Braun Hall, Building 320
Stanford University
Stanford, CA 94305-2115

shibingw@stanford.edu
650-862-3001