MatWeb, The Online Materials Database

Bismuth Selenide, Bi2Se3

Subcategory: Ceramic; Semiconductor; Sulfide/Chalcogenide

Key Words: Chalcogenide; Semiconductor; Selenium

Physical Properties	Original Value		Comments
Density	7.51 g/cc
a Lattice Constant	4.14 Å
c Lattice Constant	28.7 Å
Molecular Weight	654.84 g/mol
Mechanical Properties
Knoop Microhardness	167		N/mm²
Electrical Properties
Band Gap	0.35 eV
Electron Mobility, cm²/V-s	600
Thermal Properties
Thermal Conductivity	2.4 W/m-K
Melting Point	706 °C
Descriptive Properties
CAS Number	12068-69-8
Color	Black
Crystal Structure	Hexagonal-Rhombohedral	Tetradymite Structure - R(-3)M

References are available for this material.