An Interpretation of the First Order Raman and Infrared Spectra of Tetrahedrally Bonded Amorphous Semiconductors

1974 ◽  
Author(s):  
S. S. Mitra ◽  
D. K. Paul ◽  
Y. P. Tsay ◽  
B. Bendow
Keyword(s):  
Infrared Spectra ◽  
Amorphous Semiconductors ◽  
First Order ◽  
Tetrahedrally Bonded

Preparation, Solubility, Infrared Spectra and Radiolysis of Tetramethylammonium Hydrogenselenate Monohydrate and Lithium Tetramethylammonium Selenate Tetrahydrate

2006 ◽  
Vol 71 (3) ◽  
pp. 411-422 ◽  
Author(s):  
David Havlíček ◽  
Libor Turek ◽  
Jiří Plocek ◽  
Zdeněk Mička
Keyword(s):  
Chemical Analysis ◽  
Rate Constant ◽  
Infrared Spectra ◽  
Molecular Spectroscopy ◽  
Anhydrous Salt ◽  
First Order ◽  
First Order Kinetics ◽  
New Compounds

Solubility in the (Me4N)2SeO4-H2SeO4-H2O and (Me4N)2SeO4-Li2SeO4-H2O systems were studied. The new compounds, tetramethylammonium hydrogenselenate monohydrate ((Me4N)HSeO4·H2O) and lithium tetramethylammonium selenate tetrahydrate (Li(Me4N)SeO4·4H2O), have been found in these systems. Both substances were characterised by chemical analysis and IR molecular spectroscopy. Both of the title substances decompose under the influence of X-radiation and, thus, their structures cannot be determined. The radiolysis of both substances was studied in greater detail. Tetramethylammonium hydrogenselenate monohydrate is dehydrated by X-radiation to form the anhydrous salt. The reaction is controlled by first-order kinetics with a rate constant of 1.30(3) × 10-3 s-1.

Raman and Infrared Spectra of Amorphous Semiconductors (GeS2)1-x(Sb2S3)xSystems

1993 ◽  
Vol 32 (S3) ◽  
pp. 784 ◽  
Author(s):  
Takehisa Asami ◽  
Seinosuke Onari ◽  
Toshihiro Arai
Keyword(s):  
Infrared Spectra ◽  
Amorphous Semiconductors
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