Fourier transform infrared spectroscopic study of predeposition reactions in metalloorganic chemical vapor deposition of gallium nitride. 2

1991 ◽  
Vol 3 (6) ◽  
pp. 1093-1097 ◽  
Author(s):  
B. S. Sywe ◽  
J. R. Schlup ◽  
J. H. Edgar
Keyword(s):  
Fourier Transform ◽  
Gallium Nitride ◽  
Chemical Vapor Deposition ◽  
Spectroscopic Study ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Fourier Transform Infrared ◽  
Infrared Spectroscopic Study ◽  
Infrared Spectroscopic

Fourier Transform Infrared Spectroscopic Study of Boron-Doped Micro/Nano/Ultrananocrystalline Diamond Prepared by Chemical Vapor Deposition

2014 ◽  
Vol 802 ◽  
pp. 140-145 ◽  
Author(s):  
Tatiane M. Arantes ◽  
Nazir M. Santos ◽  
Adriana F. Azevedo ◽  
Mauricio R. Baldan ◽  
Neidenei G. Ferreira
Keyword(s):  
Fourier Transform ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Diamond Films ◽  
Chemical Vapor ◽  
Fourier Transform Infrared ◽  
Gas Mixture ◽  
Infrared Spectroscopic Study ◽  
Boron Doped Diamond ◽  
Boron Doped

Boron-doped diamond (BDD) films were grown with different grain sizes. The films were deposited on silicon substrate after a suitable pre-treatment in a hot filament assisted by chemical vapor deposition (CVD) reactor in Ar/H2/CH4gas mixtures. The addition of argon to the growth gas mixture clearly revealed the transition from nanocrystalline (BDND) to ultrananocrystalline (BDUND) diamond films. Raman spectroscopy results of BDD, BDND and BDUND exhibited a good quality diamond films considering the diamond defined peak. Fourier Transform Infrared Spectroscopy (FTIR) spectra indicated carbonyl groups and B-C in BDND and BDUND films, while the microcrystalline BDD films showed only C-H bonds and boron-carbon (B-C), without the presence of oxygen and unsaturated species. Therefore, the carbonyl presence in the nanocrystalline films is mainly due to oxidation of transpolyacetylene present at the film grain boundaries. The transition became pronounced in the gas mixture with 60% of Ar, and the microcrystalline films were totally transformed in nanocrystalline diamond at 70% of Ar.

scholarly journals Fourier transform infrared spectroscopic study of abhurite Sn21O6Cl16(OH)14

2007 ◽  
Vol 105 (2-3) ◽  
pp. 189-193 ◽  
Author(s):  
Samuel Jouen ◽  
Benoit Lefez ◽  
Moulay T. Sougrati ◽  
Béatrice Hannoyer
Keyword(s):  
Fourier Transform ◽  
Spectroscopic Study ◽  
Fourier Transform Infrared ◽  
Infrared Spectroscopic Study ◽  
Infrared Spectroscopic
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