Nano Archive

Shape control of PbSe nanocrystals using noble metal seed particles

Yong, K. T. and Sahoo, Y and Choudhury, K. R. and Swihart, M. T. and Minter, J. R. and Prasad, P. N. (2006) Shape control of PbSe nanocrystals using noble metal seed particles. NANO LETTERS, 6 (4). pp. 709-714.

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We demonstrate that the shape of PbSe nanocrystals can be controlled systematically by seeding their growth with noble metal nanoparticles (Au, Ag, or Pd) and varying the seed and precursor concentrations. Cylinders (quantum rods), cubes, crosses, stars, and branched structures were produced in high yield at 150 degrees C in reaction times of a few minutes. Although their absorption spectrum does not exhibit sharp features, the quantum rods exhibit significant photogeneration efficiency, enabling infrared sensitization of a polymeric photoconductive nanocomposite.

Item Type:Article
Subjects:Material Science > Functional and hybrid materials
Material Science > Nanofabrication processes and tools
Material Science > Nanochemistry
ID Code:3724
Deposited By:Farnush Anwar
Deposited On:22 Jan 2009 13:16
Last Modified:19 Feb 2009 10:35

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