Tin sulfide nanocrystals: Synthesis and characterization

INOR 64

Dmitry S. Koktysh1, James R. McBride1, and Sandra J. Rosenthal2. (1) Department of Chemistry, Vanderbilt Institute of Nanoscale Science and Engineering, Vanderbilt University, Station B 351822, Nashville, TN 37235, (2) Department of Chemistry and Vanderbilt Institute of Nanoscale Science and Engineering, Vanderbilt University, Station B 351822, Nashville, TN 37235
SnS nanocrystals were synthesized from a single source precursor in oleylamine at elevated temperature. High-resolution transmission electron microscopy investigation and X-ray diffraction analysis showed that the synthesized SnS nanocrystals are monocrystalline with an orthorhombic structure. The shape and size tunability of SnS nanocrystals can be achieved by controlling the reaction temperature and time, and the nature of the stabilizing ligands. The comparison between experimental optical band gap values shows evidence of quantum confinement of SnS nanocrystals. Prepared low toxicity SnS nanocrystals display strong absorption in the visible and near-infrared spectral regions making them promising candidates for solar cell energy conversion devices with tunable optical properties.