The analytical expression and the experimental curve of the exponential absorption spectrum of amorphous Se0.5S0.5 selenium-sulphur compound are compared. The parameters in the analytical expression for the exponential absorption spectrum, which determine the slope of the tails of the allowed bands, were found by fitting to the experimental curve. Using the DavisMott approximation, a new formula was obtained using the Kubo-Greenwood formula for the exponential absorption spectrum, which determines the density of electronic states at the tail of the conduction band. Using this formula and the exponential absorption spectrum determined experimentally, it is shown that it is possible to determine the density of electronic states at the tail of the conduction band.
| Mualliflar | Абдулазизов, Б.Т., Икрамов, Р.Г., Нуриддинова, М.А., Муминов, Х.А. |
|---|---|
| Jurnal | O‘zbekiston fizika jurnali |
| Nashr sanasi | 2021-02-19 |
| Jild | 22 |
| Son | 6 |
| Betlar | 344-349 |
| Til | Rus |
| DOI | 10.52304/.v22i6.205 |
DOI: 10.52304/.v22i6.205 · Maqolaning asl sahifasi
аморфные полупроводники, хвосты разрешенных зон, формула КубоГринвуда, приближение Девиса-Мотта, оптические электронные переходы, спектр экспоненциального поглощения, крутизна хвостов разрешенных зон, распределение плотности электронных состояний., amorphous semiconductors, allowed band tails, Kubo-Greenwood formula, Davis-Mott approximation, optical electronic transitions, exponential absorption spectrum, the slope of the allowed band tails, distribution of the density of electronic states.
The experimental results of measuring the yield of secondary ions and neutral calcium atoms under the bombardment of a CaCO3 target with cluster ions Bim + (m = 1−5) in the energy range 1−10 keV have been presented…
The excited collective states of deformed even-even nuclei with quadrupole and octupole deformations have been studied in the framework of the approximation of a nonaxial quadrupoleoctupole rotator. The matrix elements…
The effect of reactor radiation on the luminescence properties and absorption spectra of single crystals of bismuth germanate Bi4Ge3O12 (BGO) has been studied. It is revealed that the degradation of the luminescent…
In this work, we have studied by numerical methods the evolution of non-radial oscillations of an unsteady disk, which is surrounded by a passive ellipsoidal halo with a uniform density. For this purpose, we have…
The appearance of thermoelectric power on heated p-n heterostructures containing on the surface of silicon substrates the deposited films from a Si-Ge solid solution heavily doped with titanium was experimentally…
The paper presents the results of the detection of active variability and optical oscillations of the general light curves of gravitationally lensed quasars SDSS J1721+8842, SDSS J1433+6007 and SDSS J2145+6345 for the…
Investigations are presented to identify the conditions of formation nanocomposites based on isotactic polypropylene (PP), maleinized PP (PPMA) and their mixtures with modified montmorillonite, Cloisite 20A (MMT…
Complex qualitative and quantitative studies of the initial product, ethanol, used in the technological process for monosilane synthesis are carried out. Monosilane is subsequently used to obtain nanocrystalline silicon…
The paper presents the results of thermoionic mass- and thermodesorption spectrometry of the drugs pregabalin (lyrica), carbamazepine and tropicamide. These drugs are widely used in illegal circulation and often abused…
The emission of cluster ions of stoichiometric composition AnBm + (n+m≤12) has been studied under ion bombardment of boundary between two different mechanically joined metals A and B. It has been shown that along with…