Rb4PbP2Se8 oI60 72

• P-Pb-Rb-Se
• Cs-P-Pb-Se
• Eu-K-P-Se
• As-Nd-Rb-S
• Eu-K-P-S
• structural properties
• optical properties
• vibrational spectra
• fusion
• temperature for congruent melting
• chalcogen
• quaternary
• alkali
• pnictogen
• non-disordered
• orthorhombic