Pb2GeS4 cI128 220

• Ge-Na-Pb-S
• Ge-Pb-Se
• Ge-Pb-S
• Ge-Pb-S-Se
• optical properties
• phonons
• structural properties
• optical absorption
• wavenumber of optical phonon
• disordered
• chalcogen
• metalloid
• tripolyhedral
• quaternary
• cubic