Optical properties of CuInS2 nanoparticles in the region of the fundamental absorption edge

1998 ◽  
Vol 65 (3) ◽  
pp. 401-407 ◽  
Author(s):  
L. I. Gurinovich ◽  
V. S. Gurin ◽  
V. A. Ivanov ◽  
A. P. Molochko ◽  
N. P. Solovei
1991 ◽  
Vol 125 (2) ◽  
pp. 707-714 ◽  
Author(s):  
K. K. Chattopadhyay ◽  
I. Sanyal ◽  
S. K. Bhattacharya ◽  
S. Chaudhuri ◽  
A. K. Pal

1978 ◽  
Vol 85 (1) ◽  
pp. K57-K61 ◽  
Author(s):  
W. Hörig ◽  
H. Neumann ◽  
B. Schumann ◽  
G. Kühn

2010 ◽  
Vol 168-169 ◽  
pp. 317-320 ◽  
Author(s):  
Boris A. Gizhevskii ◽  
Yu.P. Sukhorukov ◽  
L.V. Nomerovannaya ◽  
A.A. Makhnev ◽  
Yurii S. Ponosov ◽  
...  

Features of the optical properties of nanostructured strongly correlated oxides CuO, Y3Fe5O12, and FeBO3 in a wide range of energies, which includes both the fundamental absorption region, low-energy electron excitations, and phonon modes have been investigated by methods of optical spectroscopy. Absorption and reflection spectra, Raman spectra, and ellipsometry measurements are carried out on the samples of oxide nanostructured ceramics. High-density nanoceramics were prepared by shock-wave loading and high pressure torsion methods from coarse-grain oxide powders. Strong smearing of the fundamental absorption edge is revealed for all nanoceramics. Anomalous red shift of the absorption edge Eg is found in CuO nanooxide. The features of the optical functions in nanooxides of 3d-metals may be attributed to high defectiveness of nanooxides, peculiarities in the electronic structure of strongly correlated oxides and their tendency to electronic phase separation.


1982 ◽  
Vol 111 (2) ◽  
pp. K133-K136 ◽  
Author(s):  
H. Neumann ◽  
B. Perlt ◽  
B. Schumann ◽  
G. Kühn

Author(s):  
Н.П. Степанов ◽  
А.К. Гильфанов ◽  
Е.Н. Трубицына

During the study of Bi2Te3-Sb2Te3 crystals, their magnetic and optical properties were studied depending on the ratios of the components of Bi2Te3 and Sb2Te3 in the composition of the solid solution and temperature. The results obtained allow us to state that a sharp decrease in the anisotropy of magnetic susceptibility at T = 293 K is observed in those samples in which, according to optical studies, electron-plasmon interaction is intensified, which is caused by the convergence of plasmon energies and interband transitions that form the fundamental absorption edge.


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