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Synthesis of Monodisperse PbS Nanoparticles and Their Assembly into Highly Ordered 3D Colloidal Crystals
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M. Nagel
Published/Copyright:
September 25, 2009
We describe the synthesis of highly monodisperse PbS nanocrystals using an organometalic approach, whereby oleic acid and tri-n-octylphosphine serve as stabilizing ligands. The optical bandgap of the particles is tunable as a function of crystal-size throughout the near-infrared region from 800 to 2200 nm. The particles were characterized using X-ray diffraction, optical spectroscopy and transmission electron microscopy. Applying the three layer super saturation technique we were able to grow colloidal crystals of various shapes as shown by scanning electron microscopy. Small-angle X-ray scattering experiments indicate fcc lattice structure.
Received: 2006-11-15
Accepted: 2006-12-11
Published Online: 2009-9-25
Published in Print: 2007-3-1
© Oldenbourg Wissenschaftsverlag
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Articles in the same Issue
- Preface – Professor Dr. Arnim Henglein on the occasion of his 80th birthday
- Surface Chemistry of Semiconductor Nanocrystals
- Synthesis and Assembling of Semiconductor and Metal Nanocrystals
- The Electronic Role of the TiO2 Light-Scattering Layer in Dye-Sensitized Solar Cells
- Primary Processes During the Photodeposition of Ag Clusters on TiO2 Nanoparticles
- Photoactivity of Sol–Gel Derived Nitridated ZnxTiyOz-Films
- Photothermal Properties of Gold Nanoparticles
- Electro-Assisted Photo-Luminescence of Colloidal Germanium Nanoparticles
- Cobalt-Doped ZnO Nanorods Fabricated by a Simple Wet Chemical Route in Alcoholic Solution
- Influence of the Choice of Indium Precursor and Ligand on the Synthesis of InP Nanocrystals
- Formation of the Silver Hydride Ion AgH+ upon the Reduction of Silver Ions by H· in Aqueous Solution. A Pulse Radiolysis Study
- An Electrochemical Model for Gold Colloid Formation via Citrate Reduction
- Synthesis of Monodisperse PbS Nanoparticles and Their Assembly into Highly Ordered 3D Colloidal Crystals
