Optical properties, Pbca

• H-O-P-Sr
• H-La-O-Se
• Bi-Ge-O-Sm
• Bi-Ge-O-Tm-Y
• Mg-O-P-Rb-W
• phonons
• luminescence
• infrared spectra
• values of luminescence
• wavenumber of optical phonon
• chalcogen
• pnictogen
• metalloid
• quaternary
• conductor
• orthorhombic