Structural evolution and optical properties of CdSe nanocrystals prepared by mechanical alloying

Mechanical activation assisted synthesis of pure nanocrystalline forsterite powder

“…Nanomaterials are widely known as the key materials in nanotechnology due to their unique properties including increased strength, high hardness, extremely high diffusion rates, and consequently reduced sintering times in comparison to the conventional coarse grain materials [1][2][3][4].…”

Structural stability and Raman scattering of ZnSe nanoribbons under high pressure

“…The II-VI semiconductors such as zinc or cadmium chalcogenides, as a class of important functional semiconductor materials, have always attracted great interest of researchers in several decades, not only due to the potential application [1] but also their close relevance to key problems in physics [2][3][4][5]. For the application of these semiconductor materials in photoelectronic devices a deep understanding of their structural, electronic and latticedynamic properties is essential.…”

Mid-IR band gap engineering of CdxPb1−xS nanocrystals by mechanochemical reaction

“…This kind of phase transition is similar to the high pressure induced structural transformation in CdSe nanocrystals. 20 Further prolonging the ball milling time up to 40 hours did not cause any significant change, as being shown in Figure 1(f) & 1(g). The clean diffraction pattern in Figure 1 clearly shows that pure Cd 0.4 Pb 0.6 S nanocrystals in rock salt structure have been successfully fabricated through mechanical alloying Cd, Pb and S elemental powders for more than 40 hours, no diffraction features of elemental powders or other kinds of impurity are visible in the XRD patterns.…”

“…Mechanical alloying process is such a physical method for mass fabrication of surface clean semiconductor NCs. A certain number of semiconductor nanocrystals, such as PbS, 19 CdSe, 20 CdTe, 21 CdS, 22 ZnS, 23 and CdSe 1−x S x (x = 0∼1), 24 have been prepared by this top-down approach with average sizes smaller than 10 nm. In this work, we are going to present the synthesis of ternary Cd x Pb 1−x S NCs with clean surface and homogeneous composition by mechanical alloying process.…”