Alkali, Chalcogen, Optical properties, Tetragonal

• Fe-K-Se
• H-K-O-P
• Bi-Na-O-W
• K-O-V
• Br-C-H-K-N-O-Pt
• phonons
• luminescence
• photoluminescence spectra
• Raman spectra
• wavelength for luminescence
• alkali
• chalcogen
• transitional
• disordered
• nonmetal