2D TOPOLOGICAL INSULATORS:
Bismuth sulfide (Bi2S3), BiTlTe, n-type Bismuth Selenide (Bi2Se3), p-type Bismuth Selenide (Bi2Se3), Undoped Bismuth Selenide (Bi2Se3), Bismuth Telluride (Bi2Te3), Bi2Se3(1-x)Te3x x=0.5, Bi4Te3(1-x)S3x x=0.5