A Study of Quantum Dots in a Multigrain Layer of a Planar-End Microstructure

Zhukov, N. D.; Yagudin, I. T.; Aban'shin, N. P.; Mosiyash, D. S.

doi:10.1134/s1063785020110152

Cited by 5 publications

(4 citation statements)

References 13 publications

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“…Научные и практические проблемы создания элементной базы для развивающихся в последние годы направлений наноэлектроники продолжают быть актуальными. Развитие технологий изготовления наноструктур сделало возможными исследования и разработки базовых элементов в виде систем упорядоченных квантовых точек в контакте с микро-и наноэлектродами [1][2][3][4]. Кроме прикладного значения этих исследований они вызывают большой научный интерес с точки зрения фундаментальных физических эффектов и теории происходящих в них процессов [5].…”

Section: Introductionunclassified

Квантовая Проводимость В Одиночных И Связанных Квантово-Размерных Частицах Узкозонных Полупроводников

Гавриков,

Глуховской,

Жуков

2023

Физика И Техника Полупроводников

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An organo-modified ordered layered structure with three-dimensional close packing based on colloidal quantum-sized particles (QP) of InSb, PbS, CdSe semiconductors and Langmuir-Blodgett films has been fabricated and studied. According to the current-voltage characteristics (CVC) of single-electron transport in the model of a nanocell with a linear chain QP across the layers, the processes limiting conductivity were established: emission-injection tunneling from a probe into a nanoparticle, motion in a nanoparticle determined by the establishment of an electronic wave process in it, and tunneling through a nanogap between nanoparticles. Quasi-periodic oscillations of the current and resonant peaks of quantum conductivity are observed on the I–V characteristics, which were estimated in the quantum wire model. For an even number of layers (QP, 2, or 4), the I–V characteristics were used to determine the attenuation of size quantization and the decrease in current due to the weak interaction of nanoparticles. With an odd number (3 or 5), the nanochain acts as a single quantum thread with manifestations on the CVC similar to the cases of one QP. In this case, the motion of an electron can be considered as a one-electron charge wave.

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Section: Introductionunclassified

Квантовая Проводимость В Одиночных И Связанных Квантово-Размерных Частицах Узкозонных Полупроводников

Гавриков,

Глуховской,

Жуков

2023

Физика И Техника Полупроводников

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“…Other excitation mechanisms are needed in this case. We used the emissioninjection mechanism in a multigrain microstructure that was discussed in detail in our earlier studies [12,13]. Subjected to the influence of the field applied to a microstructure, an excited electron is emitted from a certain QP into a nanogap and is then injected into a neighboring QP, where it undergoes a transition to the non-excited state.…”

mentioning

confidence: 99%

“…We carried out the experiments needed to verify this. One of two identical QP-InSb samples, which were fabricated in accordance with the procedure detailed in [13], served as an emitter, and the other was a detector. Supply voltage V = was applied to the emitter, and CVCs were measured at the detector using the technique outlined in [13].…”

mentioning

confidence: 99%

“…One of two identical QP-InSb samples, which were fabricated in accordance with the procedure detailed in [13], served as an emitter, and the other was a detector. Supply voltage V = was applied to the emitter, and CVCs were measured at the detector using the technique outlined in [13]. The lack of an unwanted (electric and capacitive) interaction between samples was verified so as to guarantee that one sample could influence the other only via electromagnetic radiation.…”

mentioning

confidence: 99%

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Features of the radiative properties of quantum-size particles of narrow-gap semiconductors

Zhukov

Сергеев

Hazanov

et al. 2022

Technical Physics Letters

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For colloidal quantum-size particles (QP) of narrow-gap semiconductors, in contrast to quantum dots of wide-gap CdSe, in QP-PbS there take place an anomalous temperature dependence of the photoluminescence intensity. Also, in the planar microstructure containing QP-InSb, long-wavelength radiation (more than 3 μm) and photoconductivity (over 20 μm) was observed. Under certain conditions, the radiation intensity and photoconductivity demonstrate a resonance maximum. The effects were explained in the model of a one-dimensional quantum oscillator, which energy substantially depends on the effective mass of its quasi-free electron. This leads to competition between the manifestations of long-wave radiation and photoluminescence, and hence, to the anomalous temperature dependence of photoluminescence. It is assumed that QP-InSb in a planar microstructure can be sources and receivers of terahertz radiation, which properties depend on the crystal structure of quantum-sized particles determined by the parameters of their synthesis. Keywords: quantum-dimensional particle, quantum dot, narrow-gap semiconductor, effective mass, Brillouin zone, dimensional quantization, quantum oscillator, photoluminescence, long-wavelength radiation.

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Single-Electron Emission–Injection Transport in a Microstructure with Colloidal Quantum Dots of Narrow-Gap Semiconductors

et al. 2021

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A Study of Quantum Dots in a Multigrain Layer of a Planar-End Microstructure

Cited by 5 publications

References 13 publications

Квантовая Проводимость В Одиночных И Связанных Квантово-Размерных Частицах Узкозонных Полупроводников

Квантовая Проводимость В Одиночных И Связанных Квантово-Размерных Частицах Узкозонных Полупроводников

Features of the radiative properties of quantum-size particles of narrow-gap semiconductors

Single-Electron Emission–Injection Transport in a Microstructure with Colloidal Quantum Dots of Narrow-Gap Semiconductors

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