The Room-Temperature Synthesis of Anisotropic CdHgTe Quantum Dot Alloys: A Molecular Welding Effect
2011
The room-temperature chemical transformation of spherical CdTe nanoparticles into anisotropic alloyed CdHgTe particles using mercury bromide in a toluene/methanol system at room temperature has been investigated. The resulting materials readily dissolved in toluene and exhibited a significant red-shift in the optical properties toward the infrared region. Structural transformations were observed, with electron microscopy showing that the CdTe nanoparticles were chemically attached (‘welded’) to other CdTe nanoparticles, creating highly complex anisotropic heterostructures which also incorporated mercury.
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