TITLE

To change transport gap of semiconducting nanoparticles without disturbing the optical one: Core-shell approach

AUTHOR(S)
Das, Bikas C.; Pal, Amlan J.
PUB. DATE
February 2009
SOURCE
Applied Physics Letters;2/23/2009, Vol. 94 Issue 8, p082106
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We show that transport gap of semiconducting nanoparticles can be changed without disturbing the optical gap. This is achieved through inorganic-organic hybrid core-shell approach. Different inorganic nanoparticles with a bandgap in the UV to NIR range are used as the core; as a shell to the nanoparticles, a monolayer of different organic molecules is used. With the inclusion of the shell layer, optical gap of the nanoparticles does not change. Transport gap, as obtained from current-voltage characteristics of a single nanoparticle with scanning tunneling microscope tip, changes to that of the shell-material irrespective of the bandgap of core nanoparticles.
ACCESSION #
43230305

 

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