optical properties of nanostructured metallic systems studied with the finite-difference time-domain method
Effects of simultaneous doping with boron and phosphorous on the structural, electronic and optical properties of silicon nanostructures
... decrease in the dopant concentration. Fig. 11 shows how the FE for the B and P codoped Si-nw changes as function of the position of the dopants within the nanowire. In the figure, the inset show the single ... respect to the gap of the pure ones showing the possibility of an impurity-based engineering of the optical properties of Si-nc. Here, we report...
Ngày tải lên: 16/03/2014, 15:15
Tripathy, optical properties of nano silicon
... nm line of Ar + laser. Optical properties of nano-silicon 287 time or with decreasing the thickness of the a-Si : H layer. This results in termination of dangling bonds of the sur- face ... transform (FFT). The numerical results for the four different sizes and geometries of the clusters are given in table 1. The value of the gap energy decreases...
Ngày tải lên: 16/03/2014, 15:31
First principles optical properties of silicon and germanium nanowires
... models. 4. Optical properties of SiNWs and GeNWs In Section 5 of the present paper, we aim to point out the importance of the many-body effects on the optica l re- sponse of some of the studied nanowires. ... in terms of the different geo- metrical structure of wires grown with different orientation. Finally the comparison of the optical spectra of SiN...
Ngày tải lên: 16/03/2014, 15:33
Electronic structure and magneto optical properties of solids v antonov, b harmon, a yaresko
... the first term is the sum of the kinetic energies of the individual elec- trons, the second defines the interaction of each of these electrons with the potential generated by the nuclei, and the ... incorporating the field of the nuclei; the functional G[ρ] includes the kinetic and exchange–correlation energy of the interacting electrons. The total...
Ngày tải lên: 17/03/2014, 14:51
synthesis and optical properties of colloidal tungsten oxide nanorods
... synthetic approaches, including solvothermal methods, 4 template-directed syntheses, 5 sonochemis- try, 6 thermal evaporation, 7 and gas-phase catalytic growth. 8 Control over the dimension of the ... in particular offer fundamental opportunities for investigating the effect of size and dimensionality on their collective optical, magnetic, and electronic properties. Various 1-D n...
Ngày tải lên: 20/03/2014, 13:08
Báo cáo " Effect of Cr$^{3+}$ concentration on structural and optical properties of ZnAl$_2$O$_4$:Cr$^{3+}$ " ppt
Ngày tải lên: 22/03/2014, 11:20
optical properties of solids
... axis (which for the wurtzite structure is along the c-axis), along which the velocity of propagation of light is independent of the polarization direction. Along other directions, the velocity of light ... in the determination of the carrier density in instances where Hall effect measurements are difficult to make. The contribution of holes to the optical conducti...
Ngày tải lên: 24/04/2014, 17:13
optical properties of epitaxial bifeo3thin film
... show growth quality of the BFO thin film for further optical measurement and analysis. SE measurements were taken to investigate the optical properties of the BFO fi lm. Considering the optical i nvesti- gation ... discussion The XRD pattern of the BFO film is displayed in Figure 2 and shows that a strong (111) peak of the BFO matches the closely spaced (111) o...
Ngày tải lên: 06/05/2014, 09:01
evaluation of shape and size effects on optical properties of zno pigment
... prepared by hydrothermal method and used for the evaluation of morphology effects of ZnO pigments on their optical properties. The synthesis conditions ... determined not only by the composition of the incident light and the optical properties of the particles and the medium but also by the size, shape,...
Ngày tải lên: 06/05/2014, 13:23
fabrication and optical properties of ordered sea urchin-like zno
... sharp, which confirm the well-crystallized particles of prepared ZnO. Fig. 1bshowstheUV–visible optical absorption characteristics of the sea urchin-like ZnO. Excitonic absorption peak of the ZnO sample ... by hydrothermal processes. The particle size of the prepared oxides can be controlled by changing preparation condition, such as the concentrations of the zinc pre...
Ngày tải lên: 06/05/2014, 13:23