Determination of InSb/AlInSb quantum well energy spectrum

Mironova, Maria; Комков, О. С.; Firsov, D. D.; Glinskiĭ, G. F.

doi:10.1088/1742-6596/541/1/012085

Cited by 6 publications

(5 citation statements)

References 10 publications

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“…This method is also among the most appropriate methods for analyzing experimental data. The complexity of the kp-method increases with the number of bands considered in the calculation [34][35][36]53] . The initial simulation approach included only an approximation of the single band kp-method, which probably was the reason for poor accuracy.…”

Section: N Ementioning

confidence: 99%

“…One of the key advantages of the Kane model is that it allows to consider the nonparabolicity of the charge carriers' dispersion law. Another bonus is the insignificant computational burden of the model, even in our case of SMP SLs [35] . The model can be formulated as an eigenenergy problem for the Schrödinger equation with the following Hamiltonian:…”

Section: Theoretical Study Of Smp Sls: the Kane Modelmentioning

confidence: 99%

“…According to Refs. [35,49], this Hamiltonian matrix includes the effective Hamiltonians , where are the wave vector of an electron in the Brillouin zone of the crystal, are…”

Section: Theoretical Study Of Smp Sls: the Kane Modelmentioning

confidence: 99%

“…When solving this problem, one can prevent false solutions in the multiband model by the -representation method since the considered region of -space can be limited based on the estimated width of the wave functions compared to the size of the Brillouin zone. The primary method to solve the Schrödinger equation involved a periodical continuation of a single quantum well [35,51,52] . The periodicity condition leads to the fact that the wave vector of an electron in a crystal becomes discrete, and the Schrödinger equation itself turns into a system of algebraic equations…”

Section: Theoretical Study Of Smp Sls: the Kane Modelmentioning

confidence: 99%

See 3 more Smart Citations

An advanced theoretical approach to study super-multiperiod superlattices: theory vs experiments

Dashkov,

Khakhulin,

Shapran

et al. 2024

J. Semicond.

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A new theoretical method to study super-multiperiod superlattices has been developed. The method combines the precision of the 8-band kp-method with the flexibility of the shooting method and the Monte Carlo approach. This method was applied to examine the finest quality samples of super-multiperiod Al0.3Ga0.7As/GaAs superlattices grown by molecular beam epitaxy. The express photoreflectance spectroscopy method was utilized to validate the proposed theoretical method. For the first time, the accurate theoretical analysis of the energy band diagram of super-multiperiod superlattices with experimental verification has been conducted. The proposed approach highly accurately determines transition peak positions and enables the calculation of the energy band diagram, transition energies, relaxation rates, and gain estimation. It has achieved a remarkably low 5% error compared to the commonly used method, which typically results in a 25% error, and allowed to recover the superlattice parameters. The retrieved intrinsic parameters of the samples aligned with XRD data and growth parameters. The proposed method also accurately predicted the escape of the second energy level for quantum well thicknesses less than 5 nm, as was observed in photoreflectance experiments. The new designs of THz light-emitting devices operating at room temperature were suggested by the developed method.

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Section: N Ementioning

confidence: 99%

Section: Theoretical Study Of Smp Sls: the Kane Modelmentioning

confidence: 99%

“…According to Refs. [35,49], this Hamiltonian matrix includes the effective Hamiltonians , where are the wave vector of an electron in the Brillouin zone of the crystal, are…”

Section: Theoretical Study Of Smp Sls: the Kane Modelmentioning

confidence: 99%

Section: Theoretical Study Of Smp Sls: the Kane Modelmentioning

confidence: 99%

See 2 more Smart Citations

An advanced theoretical approach to study super-multiperiod superlattices: theory vs experiments

Dashkov,

Khakhulin,

Shapran

et al. 2024

J. Semicond.

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“…Режим измерения, при котором лазер накачки модулируется импульсным сигналом малой скважности, приводит к избыточному неконтролируемому нагреву исследуемой структуры [11]. При этом температура ее излучающей области часто остается неизвестной, так как температурный датчик расположен у подложки образца.…”

Section: Introductionunclassified

Регистрация Спектров Инфракрасной Фотолюминесценции Методом Стробируемого Интегрирования В Режиме Активного Вычитания Фонового Сигнала

Луферов¹,

Фирсов²,

Комков³

2020

Журнал Технической Физики

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A method based on the Fourier-transform infrared (FTIR) spectrometer has been implemented allowing infrared photoluminescence measurements with a low duty cycle of pump pulses. It reduces the uncontrolled heating of semiconductor structures by pump laser. The method was used to record the infrared photoluminescence spectra of test narrow-gap low dimensional heterostructures in the wavelength range of 1–5 μm. It was determined that for large reverse duty cycle (more then 20) the developed gated integration method has a better signal-to-noise ratio in the measured spectra compared to the traditionally used synchronous detection method (Lock-in amplification).

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Infrared photoluminescence spectra measurements using boxcar integrator in the active baseline subtraction mode

Luferau

Firsov

Комков

2019

J. Phys.: Conf. Ser.

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A photoluminescence (PL) measurement method using boxcar integration in the active baseline subtraction mode has been implemented. It allows for infrared PL measurements with a low duty cycle of the pump pulse, thereby minimizing the uncontrolled heating of the structure under study. The implemented method was compared to phase-sensitive detection by signal-to-noise ratio of the resulting spectra, indicating its superior performance at low duty cycles. The decrease in uncontrolled heating of the structure under study was confirmed by observing a change in the ratio of temperature-sensitive PL peaks of a test InSb/InAs/InGaAs/InAlAs/GaAs nanoheterostructure.

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Determination of InSb/AlInSb quantum well energy spectrum

Cited by 6 publications

References 10 publications

An advanced theoretical approach to study super-multiperiod superlattices: theory vs experiments

An advanced theoretical approach to study super-multiperiod superlattices: theory vs experiments

Регистрация Спектров Инфракрасной Фотолюминесценции Методом Стробируемого Интегрирования В Режиме Активного Вычитания Фонового Сигнала

Infrared photoluminescence spectra measurements using boxcar integrator in the active baseline subtraction mode

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