Connecting the Dots: Discovery of the (M 2 Q 3 ) 2 (AMQ 2 ) n Homologous Series through Cs 5 Bi 9 S 16 ( n = 5)

Key Points

• The objective is to explore the electronic properties and band gap energies of the homologous series of compounds.
• Investigated a series of Bi-S compounds with varying structural forms and compositions.
• Measured and compared band gap energies of the compounds.
• Discovered similar band gap energies of 1.27 eV and 1.19 eV in structurally distinct compounds.
• Demonstrated that 3D networks of Bi-S polyhedra influence electronic properties.