MatWeb, The Online Materials Database

Bismuth Selenide, Bi2Se3

Subcategory: Ceramic; Semiconductor; Sulfide/Chalcogenide

Key Words: Chalcogenide; Semiconductor; Selenium

Physical Properties	Metric	English	Comments
Density	7.51 g/cc	0.271 lb/in³
a Lattice Constant	4.14 Å	4.14 Å
c Lattice Constant	28.7 Å	28.7 Å
Molecular Weight	654.84 g/mol	654.84 g/mol
Mechanical Properties
Knoop Microhardness	167	167	N/mm²
Electrical Properties
Band Gap	0.35 eV	0.35 eV
Electron Mobility, cm²/V-s	600	600
Thermal Properties
Thermal Conductivity	2.4 W/m-K	16.7 BTU-in/hr-ft²-°F
Melting Point	706 °C	1300 °F
Descriptive Properties
CAS Number	12068-69-8
Color	Black
Crystal Structure	Hexagonal-Rhombohedral	Tetradymite Structure - R(-3)M

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