Formation of PbSe nanocrystals: A growth toward nanocubes

Article Abstract:

An electron microscopic observation of crystal shape development when PbSe nanocrystals were synthesized using a dynamic injection technique at different temperatures in the presence of oleic acid is presented. A two-step evolution mechanism is proposed, indicating that the shape evolution of PbSe nanocrystals is dependent on the growth time, whereas the crystalline size can be tuned by varying the growth temperature under the studied conditions.

Electron microscopy, Nanoparticles

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Conduction in charged PbSe nanocrystal films

Article Abstract:

Conduction in thin films of PbSe nanocrystals doped by electrochemical gating was studied. Charging the film, with electrons or holes, increases the conductance by order of magnitude and the temperature and electric field dependence of conductance in the film measured between 4.3 and 135 K, were both well described by a variable range hopping model.

Semiconductors and related devices, Semiconductor and Related Device Manufacturing, Thin Film Materials, Design and construction, Electric properties, Thin films, Dielectric films, Chemical properties

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Properties of the CdSe(0001), and (1120) single crystal surfaces: Relaxation, reconstruction, and adatom and admolecule adsorption

Article Abstract:

A comprehensive study was performed on the polar (0001) and (0001) and nonpolar (1120) wurtzite CdSe surfaces that are exposed during crystal growth using first-principles density functional theory calculations. Stabilization of these surfaces by relaxation and reconstruction was considered.

Cadmium Compounds, Density functionals, Density functional theory, Structure

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