Hydrazine-induced room-temperature transformation of CdTe nanoparticles to nanowires

Nair, Pratheesh V. ; George Thomas, K. (2010) Hydrazine-induced room-temperature transformation of CdTe nanoparticles to nanowires The Journal of Physical Chemistry Letters, 1 (14). pp. 2094-2098.

Full text not available from this repository.

Official URL: http://pubs.acs.org/doi/abs/10.1021/jz100568p

Related URL: http://dx.doi.org/10.1021/jz100568p


The effect of hydrazine on the photophysical and morphological properties of water-soluble thioglycolic acid-capped cadmium telluride (CdTe) nanoparticles at room temperature has been investigated. At lower concentrations of hydrazine (0.5 M), a large enhancement in the luminescence of CdTe nanoparticles was observed without any shape change; hydrazine saturates the Cd dangling bonds on the nanoparticles' surface through coordination. Interestingly, highly crystalline CdTe nanowires with hexagonal wurtzite structure were obtained at higher concentrations of hydrazine (2.0 M) through the recrystallization of linearly assembled aggregated CdTe nanoparticles with a zinc blend structure. Strong dipole-dipole interaction between the nanoparticles in the presence of hydrazine assists their linear aggregation, and low activation energy for phase-transition drives their recrystallization to nanowires. Extremely simple methodology presented here opens up novel pathways for the synthesis of one-dimensional semiconductor nanostructures at room temperature and provides valuable information about the growth mechanism of nanowires.

Item Type:Article
Source:Copyright of this article belongs to American Chemical Society.
Keywords:Cadmium Telluride; Nanoparticles and Nanowires; Hydrazine Hydrate; Ostwald Ripening; Cubic Zinc Blende; Hexagonal Wurtzite; Luminescence
ID Code:51416
Deposited On:28 Jul 2011 11:47
Last Modified:28 Jul 2011 11:47

Repository Staff Only: item control page