Study of the optical properties of SiOxNy thin films by effective medium theories

2004 ◽  
Vol 22 (4) ◽  
pp. 1115-1119 ◽  
Author(s):  
X. Tan ◽  
J. Wojcik ◽  
P. Mascher
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Effective Medium ◽  
Effective Medium Theories

Microstructure and Optical Properties of Co Sputter Deposited Si-Al Nanocomposite Thin Films

2000 ◽  
Vol 648 ◽  
Author(s):  
F. Niu ◽  
P.J. Dobson ◽  
B. Cantor
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Optical Absorption ◽  
Absorption Peak ◽  
Al Content ◽  
Al Nanoparticles ◽  
Transmission Electron ◽  
Effective Medium Theories ◽  
Nanocomposite Thin Films ◽  
Sputter Deposited

AbstractNovel Si-Al nanocomposite thin films were made by radio frequency co-sputtering of Si and Al with Al content from 0 at.% to 69 at.%. Microstructure and optical properties of the films were characterised by conventional and high resolution transmission electron microscopyand spectrometry in the wavelength range from 200 to 3000 nm. The film microstructure consisted of Al nanoparticles (2-9 nm) embedded in an amorphous Si-Al matrix. Optical absorption spectra of the films up to 50 at.% Al exhibited a sharp absorption peak below500 nm and relatively low absorption above 500 nm. In addition, the absorption peak shifted towards longer wavelengths and the general absorption above 500 nm increased remarkably as Al content increased. For the Si-69at.%Al films, however, an absorption plateau appeared between 300 nm to 700 nm and a second weak and broad absorption peak appeared at around 900 nm. The results are analysed and compared with the optical absorption predicted by various effective medium theories.

Application of the effective medium theories to interpret the optical properties of Mn discontinuous films

Vacuum ◽  
1999 ◽  
Vol 54 (1-4) ◽  
pp. 289-293 ◽  
Author(s):  
E. Dobierzewska-Mozrzymas ◽  
J. Wójcik ◽  
P. Biegański ◽  
E. Pieciul
Keyword(s):  
Optical Properties ◽  
Effective Medium ◽  
Effective Medium Theories
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