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Theoretical prediction of the mechanical, electronic, optical and thermodynamic properties of antiperovskites A3BO (A = K, Rb and B = Au, Br) using DFT scheme: new candidate for optoelectronic devices application 利用 DFT 方案对反钝化玻璃 A3BO(A = K、Rb,B = Au、Br)的机械、电子、光学和热力学性质进行理论预测:光电器件应用的新候选材料
IF 2.2 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-08-10 DOI: 10.1007/s10825-024-02213-1
Salah Uddin, Akash Das, M. A. Rayhan, Sohail Ahmad, Rashel Mohammad Khokan, Md. Rasheduzzaman, Remon Das, Aasim Ullah, Yasir Arafat, Md. Zahid Hasan

Density Functional Theory (DFT) is incorporated in this study to examine the thermodynamic, electronic, mechanical, and optical characteristics of antiperovskite compounds A3BO (A = K, Rb and B = Au, Br). The purpose of the study is to demonstrate a comprehensive understanding of these materials and their potential applications across various fields emphasizing their stability and energetic profiles. The electronic properties, including band structures, and density of states are also analyzed to understand the electrical behavior of these materials, which enables predicting their conductive and semiconductor nature. The band gaps of K3AuO, K3BrO, Rb3AuO, and Rb3BrO are 0.72 eV, 0.80 eV, 0.15 eV, and 0.29 eV, respectively. The study also investigated the mechanical properties of the antiperovskite structures, including elastic constants, bulk modulus, and shear modulus to provide insights into their mechanical stability and durability. Their Pugh’s ratio (B/G) is below 1.75 and negative Cauchy pressure indicates these compounds are brittle. And machinability index B/C44 > 1.5 implies excellent lubricating properties. This phenomenon extends the potential industrial application of materials with specific mechanical integrity to their structural components. Additionally, the study investigated the optical properties of the A3BO antiperovskite compounds, including the dielectric function, loss function, reflectivity, conductivity, refractive index, and absorption spectra. These findings provide a comprehensive understanding of how these materials interact with light, which could be useful in the development of optoelectronic devices. Overall, this DFT study provides significant insights into the multifaceted properties of A3BO antiperovskite compounds, laying the groundwork for further experimental exploration and facilitating the targeted design of materials with tailored properties for specific technological applications.

本研究采用密度泛函理论(DFT)来研究反钝角石化合物 A3BO(A = K、Rb,B = Au、Br)的热力学、电子、机械和光学特性。研究的目的是全面了解这些材料及其在各个领域的潜在应用,强调其稳定性和能量特征。此外,还分析了这些材料的电子特性,包括带状结构和态密度,以了解它们的电学行为,从而预测它们的导电性和半导体性质。K3AuO、K3BrO、Rb3AuO 和 Rb3BrO 的带隙分别为 0.72 eV、0.80 eV、0.15 eV 和 0.29 eV。研究还调查了反沸石结构的机械特性,包括弹性常数、体积模量和剪切模量,以深入了解它们的机械稳定性和耐久性。这些化合物的普氏比(B/G)低于 1.75,负的考奇压力表明这些化合物是脆性的。而机加工性能指数 B/C44 > 1.5 则意味着这些化合物具有出色的润滑性能。这一现象将具有特定机械完整性的材料的潜在工业应用扩展到其结构组件。此外,研究还调查了 A3BO 反包晶石化合物的光学特性,包括介电函数、损耗函数、反射率、电导率、折射率和吸收光谱。这些发现让人们对这些材料如何与光相互作用有了全面的了解,对光电器件的开发很有帮助。总之,这项 DFT 研究为了解 A3BO 反包晶石化合物的多方面特性提供了重要见解,为进一步的实验探索奠定了基础,并有助于针对特定技术应用设计具有定制特性的材料。
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引用次数: 0
War strategy optimization-based methods for pattern synthesis of antenna arrays and optimization of microstrip patch antenna 基于战争策略优化的天线阵列图案合成和微带贴片天线优化方法
IF 2.2 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-08-08 DOI: 10.1007/s10825-024-02210-4
Renjing Gao, Wei Tong, Mingyue Zhang, Qi Wang

This paper first presents an application of the war strategy optimization (WSO) algorithm in pattern synthesis of antenna arrays and dimensions optimization of microstrip patch antenna. As a new type of evolutionary algorithm inspired by nature, the WSO algorithm has global optimization ability in solving complex problem including nonlinearity and nonconvexity; therefore, it will exhibit the potential advantages in the above two typical multivariate nonlinear problems. For solving pattern synthesis problem, the sidelobe reduction synthesis and null controlling of linear antenna arrays with different element are selected as numerical cases, and the WSO algorithm achieves the desired main beams width and null depth by optimizing the amplitude-only and the phase-only, respectively. For dimensions optimization of microstrip patch antenna, the WSO algorithm realizes the minimized reflection coefficient (S11) of − 80 dB at 3.1G Hz by optimizing the width and length of rectangle patch antenna. Moreover, compared with the Grasshopper optimization algorithm, the gray wolf optimization algorithm, and the invasive weed optimization algorithm, the WSO algorithm shows higher computational accuracy and faster convergence speed for solving the above two types of optimization problem. Therefore, the WSO algorithm can be widely used to in electromagnetic structure design.

本文首先介绍了战争策略优化(WSO)算法在天线阵列图案合成和微带贴片天线尺寸优化中的应用。作为一种受自然界启发的新型进化算法,WSO 算法在解决包括非线性和非凸性在内的复杂问题时具有全局优化能力,因此在上述两个典型的多变量非线性问题中将发挥其潜在优势。在解决图案合成问题时,选取了不同元素的线性天线阵列的减少侧叶合成和空心控制作为数值案例,WSO 算法分别通过只优化振幅和只优化相位实现了所需的主波束宽度和空心深度。在微带贴片天线的尺寸优化方面,WSO 算法通过优化矩形贴片天线的宽度和长度,在 3.1G Hz 频率下实现了 - 80 dB 的最小反射系数(S11)。此外,与蚱蜢优化算法、灰狼优化算法和入侵杂草优化算法相比,WSO 算法在解决上述两类优化问题时表现出更高的计算精度和更快的收敛速度。因此,WSO 算法可广泛应用于电磁结构设计。
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引用次数: 0
Estimating equivalent circuit parameters in various photovoltaic models and modules using the dingo optimization algorithm 使用 dingo 优化算法估算各种光伏模型和模块的等效电路参数
IF 2.2 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-08-06 DOI: 10.1007/s10825-024-02205-1
Hasan Temurtaş, Gürcan Yavuz, Serdar Özyön, Aybüke Ünlü

While the demand for electrical energy in the world increases daily, a large part of this demand is still provided by fossil fuels. However, the most significant contribution to solving the economic and environmental problems that arise is the spread of renewable energy production systems. Solar power generation systems are one of these renewable energy generation systems. In this study, cell and module parameters are modeled and estimated in different ways to obtain maximum energy from solar cells used in solar power generation systems. Cell and model vendors need to provide complete information to the end user. Therefore, the systems created turn into a nonlinear problem with many unknown parameters. In this study, single-diode model (SDM), double-diode model (DDM), and triple diode model (TDM) for photovoltaic (PV) cells as well as parameter estimations of four different PV modules produced by other vendors were performed for the first time with the dingo optimization algorithm (DOA). The mathematical model of PV module parameters is derived using open-circuit voltage (Voc), short-circuit current (Isc), and maximum power point values (Pmpp). The parameter values obtained by the algorithm aim to get the maximum power point curve for each model and module with minimum error. These values are compared with five traditional and five recent meta-heuristic algorithms, which have extreme positions in the literature.

虽然世界上对电能的需求与日俱增,但其中很大一部分仍由化石燃料提供。然而,对解决由此产生的经济和环境问题做出最大贡献的是可再生能源生产系统的普及。太阳能发电系统就是可再生能源发电系统之一。在这项研究中,电池和模块参数以不同的方式进行建模和估算,以便从太阳能发电系统中使用的太阳能电池中获取最大能量。电池和模型供应商需要向最终用户提供完整的信息。因此,所创建的系统变成了一个具有许多未知参数的非线性问题。在本研究中,首次使用 dingo 优化算法(DOA)对光伏(PV)电池的单二极管模型(SDM)、双二极管模型(DDM)和三二极管模型(TDM)以及其他供应商生产的四种不同光伏模块进行了参数估计。光伏模块参数的数学模型是通过开路电压 (Voc)、短路电流 (Isc) 和最大功率点值 (Pmpp) 得出的。该算法获得的参数值旨在以最小误差获得每个模型和模块的最大功率点曲线。这些参数值与文献中的五种传统算法和五种最新的元启发式算法进行了比较。
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引用次数: 0
Strain engineered < Si/Si0.97C0.03 > superlattice photodetector for optoelectronic applications: a comprehensive numerical analysis and experimental verification 用于光电应用的应变工程超晶格光电探测器:全面的数值分析和实验验证
IF 2.2 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-08-04 DOI: 10.1007/s10825-024-02209-x
Moumita Chakraborty, Pradip Kumar Sadhu, Abhijit Kundu, Moumita Mukherjee

In this paper, a strain-modified Si/Si0.97C0.03 asymmetrical superlattice exotic type (p + -i-p-n +) avalanche photodetector has been designed for applications on the infrared wavelength region. The photoelectric characteristics of the device are studied by developing a self-consistent quantum phenomena-based drift–diffusion model in conjunction with PSpice simulator. The overall performance of the device has been boosted significantly by introducing strain engineering which enhances the out-plane mobility of the charge particles in the intrinsic/active region of the device. The strain is produced in the intrinsic/active region by inclusion of small amount of carbon (C) into the pure Si material. The proposed strain-modified exotic avalanche photodetector exhibits better performance in terms of quantum efficiency (0.671) and photo-responsivity (0.645 A/W) compared to its planer unstrained Si counterpart (quantum efficiency: 0.481, photo-responsivity: 0.524A/W) at 1800 nm wavelength. Additionally, a 3 × 4 array of photodetectors has been designed using this device and its optoelectronic properties are studied in the IR wavelength region. The superiority of the performance of the 3 × 4 array of photodetectors is established in terms of better quantum efficiency (0.872) and better photo-responsivity (0.851 A/W). The validity of quantum phenomena-based drift–diffusion model is established by comparing the simulated data with experimental findings under similar operating conditions. The developed device can be used in defense as well as biomedical industries for sensing applications.

本文设计了一种应变改性硅/硅 0.97C0.03 非对称超晶格奇异型(p + -i-p-n +)雪崩光电探测器,可应用于红外波段。通过开发基于自洽量子现象的漂移扩散模型和 PSpice 仿真器,研究了该器件的光电特性。通过引入应变工程,提高了器件本征/有源区电荷粒子的平面外迁移率,从而显著提升了器件的整体性能。应变是通过在纯硅材料中加入少量碳(C)而在本征/有源区产生的。在波长为 1800 nm 的条件下,与平面非应变硅材料(量子效率:0.481,光反应率:0.524A/W)相比,所提出的应变修饰异种雪崩光电探测器在量子效率(0.671)和光反应率(0.645A/W)方面表现出更高的性能。此外,还利用该器件设计了 3 × 4 阵列光电探测器,并研究了其在红外波长区域的光电特性。3 × 4 阵列光电探测器在量子效率(0.872)和光响应率(0.851 A/W)方面的优越性得到了证实。通过将模拟数据与类似工作条件下的实验结果进行比较,确定了基于量子现象的漂移扩散模型的有效性。所开发的器件可用于国防和生物医学行业的传感应用。
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引用次数: 0
Theoretical calculations of the optoelectronic properties of a penta-graphene monolayer: study of many-body effects 五石墨烯单层光电特性的理论计算:多体效应研究
IF 2.2 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-08-03 DOI: 10.1007/s10825-024-02208-y
B. Minaie, S. A. Ketabi, J. M. De Sousa

Based on density functional theory (DFT), the GW approximation and Bethe–Salpeter equation (BSE), we performed a theoretical calculation to study the electronic and optical properties of penta-graphene (PG) monolayers. Our findings reveal that PG behaves as a semiconductor with an indirect band gap of 2.27 eV at the DFT-GGA level. By incorporating the GW approximation based on many-body perturbation theory, we observed an increase in the band gap, resulting in a quasi-direct band gap of 4.53 eV. Furthermore, we employed the G0W0-RPA and G0W0-BSE approximations to compute the optical spectra of the monolayer in the absence and in the presence of electron–hole interaction, respectively. The results indicate that the inclusion of electron–hole interactions leads to a red-shift of the absorption spectrum towards lower energies compared to the spectrum obtained from the G0W0-RPA approximation. Notably, the optical absorption spectra are predominantly governed by the first bound exciton, characterized by a significant binding energy of 2.07 eV. Our results suggest that the PG monolayer, with its wider band gap and enhanced excitonic effects, is potentially a suitable candidate for the design and fabrication of optoelectronic components.

基于密度泛函理论(DFT)、GW 近似和 Bethe-Salpeter 方程(BSE),我们进行了理论计算,研究了五石墨烯(PG)单层的电子和光学特性。我们的研究结果表明,在 DFT-GGA 水平上,五石墨烯表现为间接带隙为 2.27 eV 的半导体。通过加入基于多体扰动理论的 GW 近似,我们观察到带隙有所增大,达到了 4.53 eV 的准直接带隙。此外,我们还采用 G0W0-RPA 和 G0W0-BSE 近似分别计算了单层在没有电子-空穴相互作用和有电子-空穴相互作用时的光学光谱。结果表明,与根据 G0W0-RPA 近似方法得到的光谱相比,加入电子-空穴相互作用会导致吸收光谱向低能量方向红移。值得注意的是,光吸收光谱主要由第一个结合激子控制,其特点是结合能高达 2.07 eV。我们的研究结果表明,PG 单层具有更宽的带隙和更强的激子效应,有可能成为设计和制造光电元件的合适候选材料。
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引用次数: 0
A new behavioral-level model of superconducting Josephson junctions with Simulink 利用 Simulink 建立超导约瑟夫森结的新行为级模型
IF 2.2 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-08-03 DOI: 10.1007/s10825-024-02206-0
Yalin Zhong, Peng Chen

Josephson junctions based on superconducting materials are fundamental components for quantum detection, quantum communication and quantum computers. An accurate behavioral model of Josephson junctions is the prerequisite for predicting the response (or the behavior) of various superconducting circuits. In this study, we present a resistively and capacitively shunted junction model-based behavioral-level model for the current–voltage characteristics of Josephson junctions. This model accurately predicts the current–voltage characteristics and their temperature dependencies of Josephson junctions made of different materials under three typical working modes: underdamped voltage-driven, overdamped current-driven, and underdamped current-driven. Additionally, it forecasts the critical current and superconducting energy gap characteristics with respect to temperature, as well as the constraint relationship between the shunt resistance, superconducting energy gap, and critical current. Comparing the measured data with the simulation predictions, the model has an average accuracy of 89.28(%), which demonstrate its reliability.

基于超导材料的约瑟夫森结是量子探测、量子通信和量子计算机的基本组件。准确的约瑟夫森结行为模型是预测各种超导电路响应(或行为)的先决条件。在这项研究中,我们针对约瑟夫森结的电流-电压特性,提出了一个基于电阻和电容分流结模型的行为级模型。该模型准确预测了不同材料制成的约瑟夫森结在欠阻尼电压驱动、过阻尼电流驱动和欠阻尼电流驱动三种典型工作模式下的电流-电压特性及其温度依赖性。此外,它还预测了临界电流和超导能隙随温度变化的特性,以及并联电阻、超导能隙和临界电流之间的约束关系。将测量数据与模拟预测进行比较,该模型的平均精确度为 89.28(%),这证明了它的可靠性。
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引用次数: 0
Precise parameter estimation of PEM fuel cell via weighted mean of vectors optimizer 通过向量加权平均优化器精确估算 PEM 燃料电池参数
IF 2.2 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-08-02 DOI: 10.1007/s10825-024-02204-2
Badis Lekouaghet, Mohammed Amin Khelifa, Abdelkrim Boukabou

This paper deals with the determination of the optimal values to be given for the seven unknown parameters of the proton exchange membrane fuel cell (PEMFC). To this end, the weighted mean of vectors optimizer (INFO) metaheuristic algorithm is applied to estimate these parameters by minimizing the sum of squared errors (SSEs) between the measured and calculated voltages of the PEMFC. Three commercial types of PEMFCs are investigated: (i) BCS 500 W Stack, (ii) NedStack PS6 Stack, and (iii) Horizon 500 W Stack. The accuracy of the applied INFO algorithm is verified by comparing the estimated voltage–current ((I-V)) characteristics with the measured data. Furthermore, the estimated parameters of electrical PEMFCs, the minimum reached SSE, and the standard deviation Std values achieved by INFO are compared with the results obtained using other competitive metaheuristic optimization algorithms such as Honey badger algorithm, Gradient-based optimizer, Harris hawks optimization, and others. From the obtained results, the convergence curves show that the unknown parameters of the three PEMFCs are better estimated using the proposed INFO than other algorithms.

本文探讨如何确定质子交换膜燃料电池(PEMFC)七个未知参数的最优值。为此,采用加权平均向量优化器(INFO)元启发式算法,通过最小化 PEMFC 测量电压与计算电压之间的平方误差之和(SSE)来估计这些参数。研究了三种商用 PEMFC:(i) BCS 500 W Stack、(ii) NedStack PS6 Stack 和 (iii) Horizon 500 W Stack。通过比较估计的电压-电流((I-V))特性与测量数据,验证了所应用的 INFO 算法的准确性。此外,还将 INFO 算法估算的 PEMFC 电气参数、达到的最小 SSE 值和标准偏差 Std 值与使用其他有竞争力的元启发式优化算法(如蜜獾算法、基于梯度的优化器、哈里斯鹰优化等)获得的结果进行了比较。从获得的结果来看,收敛曲线表明,与其他算法相比,使用 INFO 估算三个 PEMFC 的未知参数效果更好。
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引用次数: 0
Study of chalcogenide-based metal perovskites BaZrX3 (X = S and Se): DFT insight into fundamental properties for sustainable energy generation using AMPS-1D 对基于卤化铝的金属包晶BrZrX3(X = S和Se)的研究:利用 AMPS-1D 对可持续能源生成的基本特性进行 DFT 深入研究
IF 2.2 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-08-01 DOI: 10.1007/s10825-024-02201-5
Naincy Pandit, Rashmi Singh, Peeyush Kumar Kamlesh, Nitin Kumar, Pawan Sharma, Sarita Kumari, Tanuj Kumar, Samah Al-Qaisi, Ajay Singh Verma

Context

Emerging materials inspire us to study one of the perovskite chalcogens made from alkaline-earth-metals (Baryum). Here, we have determined some fundamental properties and explained their applicability in energy conversion device fabrication by first principles calculation. These materials show direct bandgap for BaZrS3and BaZrSe3 1.83 eV and 1.3 eV (at symmetry pointΓ), respectively; Elastic parameters like as Pugh ratio B/G ~ 1.75 and 1.78 for BaZrS3and BaZrSe3, respectively and have broader visible absorption spectrum with mechanically stable. The absorption coefficient is greater than 105 cm−1 at photon energy 1.83 eV for BZS and 1.3 eV for BZSe. For photovoltaic application, electron transport layer (ETL) has been varied, while putting hole transport layer (HTL) for the findings of efficiency, and ZnO is proven with 21.97% efficiency. This emerging study shows that these materials may be used as an alert substance in energy conversion device fabrications and the proposed outcomes are in good acceptance with the experimental and other theoretical data. As per the optical and thermoelectric parameters of these materials, we infer that both are promising candidates in energy conversion devices.

Methods

Fundamental properties based on the full-potential linearized augmented plane wave (FP-LAPW) method, this computation was performed using the WIEN2k simulation code. In order to calculate the photovoltaic properties of semiconducting perovskites, it is one of the most reliable methods. For application point of view, the Microelectronic and Photonic Structures-one-dimensional (AMPS-1D) analysis tool has been used for simulation of photovoltaic devices. There are several critical absorbance parameters, including band gap, defect density, thickness, concentration of doping, and operating temperature, that have been taken into consideration.

背景新兴材料启发我们研究一种由碱土金属(重金属)制成的透辉石共轭物。在这里,我们确定了一些基本特性,并通过第一原理计算解释了它们在能量转换设备制造中的适用性。这些材料显示,BaZrS3 和 BaZrSe3 的直接带隙分别为 1.83 eV 和 1.3 eV(对称点Γ处);BaZrS3 和 BaZrSe3 的弹性参数(如普氏比 B/G ~ 1.75 和 1.78)分别为 1.75 和 1.78。在光子能量为 1.83 eV 和 1.3 eV 时,BZS 和 BZSe 的吸收系数分别大于 105 cm-1。在光伏应用中,人们改变了电子传输层(ETL),同时加入了空穴传输层(HTL)以提高效率,结果表明 ZnO 的效率为 21.97%。这项新研究表明,这些材料可作为能量转换设备制造中的一种警戒物质,所提出的结果与实验数据和其他理论数据相符。根据这些材料的光学和热电参数,我们推断这两种材料在能源转换设备中都是很有前途的候选材料。方法基于全电位线性化增强平面波(FP-LAPW)方法的基本特性,本计算使用 WIEN2k 仿真代码进行。为了计算半导体过氧化物的光伏特性,这是最可靠的方法之一。从应用角度来看,微电子和光子结构一维(AMPS-1D)分析工具已被用于模拟光伏设备。其中考虑了几个关键的吸光参数,包括带隙、缺陷密度、厚度、掺杂浓度和工作温度。
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引用次数: 0
Nonlinear dynamics of a Josephson junction coupled to a diode and a negative conductance 与二极管和负电导耦合的约瑟夫森结的非线性动力学
IF 2.2 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-07-30 DOI: 10.1007/s10825-024-02200-6
M. A. Kakpo, C. H. Miwadinou

We studied the nonlinear dynamics of a shunted inductive Josephson junction coupled to a diode and a negative conductance. Taking into account the non-harmonicity of the junction, based on Kirchhoff’s laws, we have developed the mathematical model which governs the dynamics of the circuit. The fixed points of the system are determined, and their stabilities are analyzed using the Routh–Hurwitz criterion. The bifurcation and transition to chaos of the model are studied using the the fourth-order Runge–Kutta method; the system displays a rich dynamics. The range of values of each parameter leading to periodic and chaotic electrical oscillations is obtained through the analysis of the effect of these parameters on each type of dynamics. Finally, the implementation by microcontroller is carried out in order to experimentally verify the different dynamics obtained numerically.

我们研究了与二极管和负电导耦合的分流电感约瑟夫森结的非线性动力学。考虑到结的非谐波性,我们以基尔霍夫定律为基础,建立了支配电路动态的数学模型。我们确定了系统的固定点,并使用 Routh-Hurwitz 准则分析了它们的稳定性。使用四阶 Runge-Kutta 方法研究了模型的分岔和向混沌的过渡;系统显示出丰富的动态。通过分析各参数对各类动力学的影响,得出了导致周期性和混沌性电振荡的各参数的取值范围。最后,通过微控制器进行实施,以实验验证数值得出的不同动态。
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引用次数: 0
A semi-classical Floquet-NEGF approach to model photon-assisted tunneling in quantum well devices 量子阱器件中光子辅助隧穿的半经典 Floquet-NEGF 建模方法
IF 2.2 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-07-27 DOI: 10.1007/s10825-024-02203-3
Nathan De Sutter, Emile Vanderstraeten, Dries Vande Ginste

The non-equilibrium Green’s function formalism is often employed to model photon-assisted tunneling processes in opto-electronic quantum well devices. For this purpose, self-consistent schemes based on a quantum electrodynamical description of light–matter interactions have been proposed before. However, these schemes are typically computationally very demanding. Therefore, in this work, a novel semi-classical method based on Floquet–Green theory is proposed, which strongly mitigates the computational costs. By comparison to results obtained with a traditional, purely quantum mechanical technique, the new approach is validated, shown to be faster, and exhibits superior convergence properties. Finally, a two-band model for superlattice structures is constructed to further illustrate the advantages of the novel, advocated method.

非平衡格林函数形式主义经常被用来模拟光电子量子阱器件中的光子辅助隧道过程。为此,以前曾提出过基于光-物质相互作用量子电动力学描述的自洽方案。然而,这些方案通常对计算要求很高。因此,本研究提出了一种基于 Floquet-Green 理论的新型半经典方法,大大降低了计算成本。通过与传统的纯量子力学技术得出的结果进行比较,新方法得到了验证,证明其速度更快,并表现出卓越的收敛特性。最后,我们构建了一个超晶格结构的双带模型,进一步说明了所倡导的新方法的优势。
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引用次数: 0
期刊
Journal of Computational Electronics
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