Multigrain Structures of the Semiconductor Nanoparticles

Zhukov, N. D.; Shishkin, M. I.; Yagudin, I. T.; Khazanov, A. A.; Gavrikov, M. V.

doi:10.17587/nmst.21.397-405

Cited by 4 publications

(2 citation statements)

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“…1, a) or two humps (distribution 2 in fig. 1, a) [5,20]. In accordance with the dependence of energy on size according to formula (1), the energy (and wavelength) spread should be double of that for a size spread, i. e. in our case ±10%, which is estimated and observed for the marked peaks in fig.…”

supporting

confidence: 78%

Size quantization and charge instability in colloidal quantum dots of narrow-gap semiconductors

Сергеев

Gavrikov

Zhukov

2022

Technical Physics Letters

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According to the current-voltage characteristics (CVC) and absorption spectra of colloidal quantum dots QD-InSb, -PbS, -HgSe on random samples, the manifestations of charge instability appear in the form of single current peaks and quasi-periodic deviations from the monotonic dependence of the CVC, are determined and studied. The results are explained by dimensional electron quantization in the model of a deep extended potential well and depending on the ratios of the quantization size and the de Broglie wavelength for an electron. It is assumed that the manifestation of Bloch oscillations has been experimentally confirmed. The data on the studied processes are determined and summarized in a table. Keywords: Quantum dot, nanocrystal, size quantization, quantum selection, Coulomb constraint, Bloch oscillations.

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supporting

confidence: 78%

Size quantization and charge instability in colloidal quantum dots of narrow-gap semiconductors

Сергеев

Gavrikov

Zhukov

2022

Technical Physics Letters

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“…Our preliminary studies have shown that the photoluminescence of QD-HgSe, in contrast to standard photoluminophores, can experience enhancement when exposed to elevated temperature and current (voltage), which we explain by weakening the action of competing mechanisms ofexciton and size quantization. We reported on the anomalous temperature dependence of photoluminescence as a specific manifestation of dimensional quantization in QD in the study [12].…”

Section: Dimensional Quantizationmentioning

confidence: 99%

Synthesis and properties of mercury selenide colloidal quantum dots

et al. 2022

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Colloidal nanocrystals (quantum dots (QDs)) of mercury selenide have been synthesized and the effect of size quantization on their basic properties has been investigated. The current-voltage characteristics of single QDs (less than 10 nm) had features in the form of separate regular peaks and quasi-periodic current oscillations with voltage intervals (0.1-0.2) V. The observed features were explained in the models of size quantization and Bloch oscillations. The absorption spectra in the range up to 25 μm had eight certain peaks, including five --- interband and intraband transitions and three --- with energies (145-215) meV, which are explained as intraresonant. Calculations show that it is possible to have IR photosensitivity in the wavelength range up to 40 μm. Keywords: Colloidal synthesis, nanocrystal, quantum dot, mercury selenide, dimensional quantization, Bloch pulsations, electron transport, IR absorption, IR photosensitivity.

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On a new ichthyosaur of the genus Undorosaurus

Zverkov

Gory

2014

Proceedings ZIN

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A new species of ichthyosaur genus Undorosaurus from the Volgian stage of Moscow is described based on an incomplete forelimb. It differs from congeners basically in the form and position of pisiforme. With the application of cladistic method the phylogenetic position of two genera Undorosaurus and Paraophthalmosaurus in the system of Ichthyosauridae is defined. Both taxa are referred to the clade Ophthalmosaurinae.

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Multigrain Structures of the Semiconductor Nanoparticles

Cited by 4 publications

References 0 publications

Size quantization and charge instability in colloidal quantum dots of narrow-gap semiconductors

Size quantization and charge instability in colloidal quantum dots of narrow-gap semiconductors

Synthesis and properties of mercury selenide colloidal quantum dots

On a new ichthyosaur of the genus Undorosaurus

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