Chalcogen, Conductor, Semiconductor, Transitional, Kannewurf

• Ce-Cu-K-S
• Ce-Cs-Cu-S
• Ba-Cu-Eu-O
• Cu-Gd-Te
• Cu-K-Se-U
• electronic and electrical properties
• optical properties
• thermoelectric power
• thermal and thermodynamic properties
• conductivity or resistivity
• semiconductor
• transitional
• conductor
• chalcogen
• quaternary
• orthorhombic
• monoclinic
• tetragonal
• hexagonal
• cubic