Dmitry S Koktysh et al 2007 Nanotechnology 18 495607 doi:10.1088/0957-4484/18/49/495607
Dmitry S Koktysh1,2, James R McBride1, Sriram K Dixit2,3, L C Feldman2,3,4 and Sandra J Rosenthal1,2,4
Show affiliationsColloidal PbS/PbSe nanostructures with core–shell type morphology have been synthesized for the first time using a simple chemical procedure where template PbS nanocrystals (NCs) were treated with Se solution in tributylphosphine at elevated temperature. The Se-coated PbS NCs were structurally and optically characterized by high resolution transmission electron microscopy (HRTEM), x-ray diffraction (XRD), Rutherford backscattering spectrometry (RBS) analysis, absorption and photoluminescence (PL) spectroscopy. Synthesized PbS/PbSe structures can be of particular importance in photovoltaic applications where fabrication of heterostructures with compositional modulation on the nanometer scale is essential.
81.16.Be Chemical synthesis methods
Soft matter, liquids and polymers
Condensed matter: electrical, magnetic and optical
Issue 49 (12 December 2007)
Received 20 August 2007
Published 15 November 2007
Dmitry S Koktysh et al 2007 Nanotechnology 18 495607
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