Institute of Crystallography - CNR

Crystal structure, DFT studies and thermal characterization of new luminescent stannate (IV) based inorganic-organic hybrid compound

In this research work, our central focus is upon a novel organic-inorganic hybrid material with an efficient broadband green light emission based on a tin halide (CHN)[SnCl] of the general formula AMX (A= Organic cation; M= Metal other than lead and X= Halogen). This compound was grown by slow evaporation technique in an aqueous solution and was characterized by X-ray diffraction, infrared spectroscopy (IR), UV-Visible (UV-Vis), photoluminescence technique and thermal analysis. X-ray investigation demonstrates that this compound crystallizes in the monoclinic system with the space group P2/c. The optimized geometric parameters, normal mode frequencies and corresponding vibrational assignments of the title compound were theoretically carried out using density functional theory (DFT) with the Becke three parameter, Lee Yang Parr (B3LYP) and Los Alamos National Laboratory 2 Double-Z (LanL2DZ) (B3LYP/LanL2DZ) level. Calculated and experimental results go in good correlation. The optical study on (CHN)[SnCl] revealed two absorption bands with an energy gap equal to 3.56 eV. Photoluminescence measurements exhibited a strong emission at 530 nm at room temperature.

Journal of molecular structure (Print)
Impact factor
Sayer I.; Dege N.; Ghalla H.; Moliterni A.; Naili H.
Authors IC CNR