Kaushik Roy Choudhury

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A new solution-based method to fabricate Cu(2)ZnSn(S,Se)(4) (CZTSSe) thin films is presented. Binary and ternary chalcogenide nanoparticles were synthesized and used as precursors to form CZTSSe thin films. The composition of the CZTSSe films can be easily controlled by adjusting the ratio of the nanoparticles used. The effect of compositional adjustment on(More)
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.(More)
Anisotropic growth of nanocrystalline PbS with a variety of morphologies was achieved via hot colloidal synthesis in the presence of Au nanoparticles. Synthesis using Au nanoparticles produced more uniform diameter nanowires than could be obtained in their absence. A variety of other morphologies, such as nanorods, nanocubes, nanocauliflowers, and(More)
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