In chalcogenides

Numerous ternary systems are known for II-VI structures incorporating elements from other groups of the Periodic Table. One example is the Zn-Fe-S system Zn(II) and Fe(II) may substimte each other in chalcogenide structures as both are divalent and have similar radii. The cubic polymorphs of ZnS and FeS have almost identical lattice constant a = 5.3 A) and form solid solutions in the entire range of composition. The optical band gap of these alloys varies (rather anomalously) within the limits of the ZnS (3.6 eV) and FeS (0.95 eV) values. The properties of Zn Fei-xS are well suited for thin film heterojunction-based solar cells as well as for photoluminescent and electroluminescent devices. 

De Marco R, Mackey DJ, Zirino A (1997) Response of the jalpaite membrane copper(lI) ion-selective electrode in marine waters. Electroanalysis 9 330-334 Kozicki MN, Mitkova M (2006) Mass transport in chalcogenide electrolyte films - materials and applications. J Non-Cryst Solids 352 567-577... 

In terms deriving from the Ramsey approach, a review of chemical shifts in chalcogenide and pnictide semiconductors in terms of Harrison s BOM and related approaches has been given [130]. The Ramsey approach has also been used to explain chemical shifts in III-V compounds [131], and specifically 113Cd shifts in Cd chalcogenides [132]. 

NMR spectra heteronuclear gold cluster compounds, 39 345-348 Phalaris canariensis esophageal cancer, 36 144-145 scanning proton microprobe, 36 149 structural motifs of silicas, 36 146 Pharmaceuticals, 18 177 Phase transitions, in chalcogenide halide compounds, 23 332, 408, 412 [PhCHjMejNAlHjlj, 41 225-226 [(PhCH2)jNLi]3 molecular structure, 37 94, 96 in solution, 37 107-108... 

The gap states in amorphous materials are known to result in charged defects, transport occurring through the hopping of bipolarons. In chalcogenide glasses, the bipolarons correspond to over-coordinated (Cj) and under-coordinated (Cj") centres. 

Very important is the observed similarity between the light-induced changes in pure amorphous Se and Se containing Sb or As additives. The similarity is possibly the clue to a more general understanding of various photoinduced changes, photocrystallization, and compositional dependency in chalcogenide vitreous semiconductors. Further experiments would be very helpful in this context. 

Person, J.L., Colas, F., Compere, C., Fehaitre, M., Anne, M., Boussard-Pledel, C., Bureau, B., Adam, J.-L., Deputier, S., and Guilloux-Viry, M. 2008. Surface plasmon resonance in chalcogenide glass-based optical system. Sens Actuators B Chem 130(2) 771-776. 

G. Agostinelli, Photocurrent Analysis of CdTe Solar Cells, Ph.D. Thesis, Univer-siteit Gent, 2002. See also G. Agostinelli, et al., Light dependent current transport mechanisms in chalcogenide solar cells, in 3rd World Photovoltaic Energy Conference, Osaka, May 11-18, 2003. 

V. S. Minaev and S. P. Timoshenkov, Glass-Formation in Chalcogenide Systems and Periodic System A. Popov, Atomic Structure and Structural Modification of Glass... 

V. A. Funtikov, Eutectoidal Concept of Glass Structure and Its Application in Chalcogenide Semiconductor Glasses... 

Audrey S. Glebov, The Nature of the Current Instability in Chalcogenide Vitreous Semiconductors A. M. Andriesh, M. S. Iovu and S. D. Shutov, Optical and Photoelectrical Properties of Chalcogenide Glasses V. Val. Sobolev and V. V. Sobolev, Optical Spectra of Arsenic Chalcogenides in a Wide Energy Range of Fundamental Absorption... 

Andrey S. Glebov, Electronic Devices and Systems Based on Current Instability in Chalcogenide Semiconductors... 

In Anderson s treatment, no account is taken of changes in the electronic disorder of the compound arising from changes in the stoichiometry. In the sense of the notation used previously this is equivalent to considering the presence of only neutral defects. For a binary compound exhibiting only Frenkel disorder in the metal lattice, the defects are therefore Vm° and Mf, with no defects in chalcogenide lattice. The presentation given here is equivalent to that of Anderson, since we can write ... 

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