scholarly journals Optical Properties of Multi-Component Cadmium-Silver Nanocluster Composites Formed in Silica by Sequential Ion Implantation

1996 ◽  
Vol 438 ◽  
Author(s):  
R. A. Zuhr ◽  
R. H. Magruder ◽  
T. S. Anderson
Keyword(s):  
Optical Properties ◽  
Effective Medium Theory ◽  
Single Element ◽  
Metal Nanoclusters ◽  
Medium Theory ◽  
Silver Nanocluster ◽  
Nominal Dose ◽  
Transmission Electron ◽  
Metal Colloid ◽  
Ion Species

AbstractThe formation and optical properties of nanometer dimension metal colloid composites formed by the sequential implantation of Cd then Ag and by single element implantations of Cd and Ag in silica were characterized by transmission electron microscopy (TEM) and optical spectroscopy. A nominal dose of 6×1016 ions/cm2 as determined by current integration was used for both ion species. The doses used for the sequential implantations were a 1 to 1 ratio of Cd to Ag. Sequential implantations of Cd and Ag led to the formation of both multi-component metal nanoclusters and elemental nanoclusters. The electron diffraction measurements indicated that the polycrystalline particles of Ag5Cd8 and elemental Ag were formed. The optical response was consistent with results expected from effective medium theory.

Transparent Conductive Tin Doped Indium Oxide Thin Films with Silver Additive

2001 ◽  
Vol 666 ◽  
Author(s):  
Annette Hultåker ◽  
Jun Lu ◽  
Eva Olsson ◽  
Gunnar A. Niklasson ◽  
Claes-Göran Granqvist
Keyword(s):  
Electron Microscopy ◽  
Thin Films ◽  
Electrical Conductivity ◽  
Transmission Electron Microscopy ◽  
Optical Properties ◽  
Effective Medium Theory ◽  
Atomic Ratio ◽  
Dc Magnetron Sputtering ◽  
Medium Theory ◽  
Transmission Electron

ABSTRACTThin films of intermixed layers of In2O3:Sn (denoted ITO) and silver were made by reactive dc magnetron sputtering. The silver to indium atomic ratio was 0 ≤ x ≥ 0.09 Films with x = 0.01 showed increased luminous transmittance Tlum after annealing at 100 or 200°C, whereas x > 0.01 yielded lowered Tlum. The optical properties could be reconciled with the Maxwell-Garnett effective medium theory assuming that a well-defined portion of the silver was occluded as spheroidal particles. Films with x ≤ 0.06 had enhanced electrical conductivity after annealing at 200 or 300°C. Transmission electron microscopy displayed columnar features whose character depended on x.

Optical properties of Microcrystalline Silicon determined by Spectroscopic Ellipsometry and Photothermal Deflection Spectroscopy

2002 ◽  
Vol 715 ◽  
Author(s):  
Kyung Hoon Jun ◽  
Helmut Stiebig ◽  
Reinhard Carius
Keyword(s):  
Optical Properties ◽  
Spectroscopic Ellipsometry ◽  
Volume Fraction ◽  
Large Deviation ◽  
Effective Medium Theory ◽  
Dense Medium ◽  
Medium Theory ◽  
Enhanced Absorption ◽  
Photothermal Deflection Spectroscopy ◽  
Photothermal Deflection

AbstractThe effect of the microstructure and bonded hydrogen on the optical properties of microcrystalline films (μc-Si:H) was investigated by Spectroscopic Ellipsometry (SE) and Photothermal Deflection Spectroscopy (PDS). On samples with a high crystalline volume fraction we studied the reason for a large deviation of absorption coefficient in the energy range between 1.6 eV and 3.2 eV from the value predicted by effective medium theory. This enhancement can be attributed to scattering by the inhomogeneity of μc-Si:H, which is investigated by the introduction of the dense medium radiative transfer formalism to an optical scattering simulation. Further, we suggest strain as a reason for the enhanced absorption in highly crystalline μc-Si:H.

Optical properties of Mn films on dielectric substrates: effective medium theory application

Vacuum ◽  
1998 ◽  
Vol 50 (1-2) ◽  
pp. 49-51
Author(s):  
E Dobierzewska-Mozrzymas ◽  
P Biegański ◽  
E Pieciul ◽  
J Wójcik
Keyword(s):  
Optical Properties ◽  
Effective Medium Theory ◽  
Effective Medium ◽  
Medium Theory ◽  
Dielectric Substrates ◽  
Theory Application

Effective-medium theory for the optical properties of diamond and diamondlike films

1994 ◽  
Vol 50 (16) ◽  
pp. 12073-12077 ◽  
Author(s):  
Z. Q. Wang ◽  
D. Stroud ◽  
S. A. Dregia
Keyword(s):  
Optical Properties ◽  
Effective Medium Theory ◽  
Effective Medium ◽  
Medium Theory
Sign in / Sign up

Export Citation Format

Share Document