Chalcogen, Quaternary, Kannewurf

• Ce-Cu-K-S
• Ce-Cs-Cu-S
• Ba-Cu-Eu-O
• Bi-Cs-Sn-Te
• H-K-O-V
• electronic and electrical properties
• conductivity or resistivity
• thermal and thermodynamic properties
• thermoelectric power
• optical properties
• chalcogen
• quaternary
• alkali
• conductor
• semiconductor
• monoclinic
• orthorhombic
• tetragonal
• cubic
• hexagonal