The colloidal synthesis of SnSe nanoparticles is accomplished through the injection of bis[bis(trimethylsilyl)amino]tin(II) into hot trioctylphosphine: selenium in the presence of oleylamine. Through the manipulation of reaction temperature particles are grown with the average diameter reliably tuned to 4-10 nm. Quantum confinement is examined by establishing a relationship between particle size and band gap while the in depth growth dynamics are illuminated through UV-vis-NIR spectroscopy. Surface chemistry effects are explored, including the demonstration of useful ligand exchanges and the development of routes toward anisotropic particle growth. Finally, transient current-voltage properties of SnSe nanocrystal films in the dark and light are examined. © 2010 American Chemical Society.
Bibliographical noteKAUST Repository Item: Exported on 2020-10-01
Acknowledgements: We thank the KAUST-CU Center for Energy and Sustainability for support. TEM and XRD characterization was performed at the Cornell Center for Materials Science. We thank the Dichtel research group at Cornell for use of their spectrophotometer. We thank Prof. Hector Abruna and Stephen Burkhardt for helpful discussions and assistance with cyclic voltammetry measurements.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.