Silicon-Based Metastructure Optical Scattering Multiply–Accumulate Computation Chip

Liu, Xu; Zhu, Xudong; Wang, Chunqing; Cao, Yifan; Wang, Baihang; Ou, Hanwen; Wu, Y. Z.; Mei, Qixun; Zhang, Jialong; Cong, Zhe; Liu, Rentao

doi:10.3390/nano12132136

Cited by 3 publications

(3 citation statements)

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“…Nowadays, Lumerical [ 30 ], Silvaco [ 31 ] and Sentaurus [ 32 ] are widely used as TCAD software. In this paper, Sentaurus TCAD software was used to determine the optical and electrical properties of the MoO 3 /Si heterojunction solar cell.…”

Section: Methodsmentioning

confidence: 99%

Atom-to-Device Simulation of MoO3/Si Heterojunction Solar Cell

et al. 2022

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Metal oxides are commonly used in optoelectronic devices due to their transparency and excellent electrical conductivity. Based on its physical properties, each metal oxide serves as the foundation for a unique device. In this study, we opt to determine and assess the physical properties of MoO3 metal oxide. Accordingly, the optical and electronic parameters of MoO3 are evaluated using DFT (Density Functional Theory), and PBE and HSE06 functionals were mainly used in the calculation. It was found that the band structure of MoO3 calculated using PBE and HSE06 exhibited indirect semiconductor properties with the same line quality. Its band gap was 3.027 eV in HSE06 and 2.12 eV in PBE. Electrons and holes had effective masses and mobilities of 0.06673, −0.10084, 3811.11 cm2V−1s−1 and 1630.39 cm2V−1s−1, respectively. In addition, the simulation determined the dependence of the real and imaginary components of the complex refractive index and permittivity of MoO3 on the wavelength of light, and a value of 58 corresponds to the relative permittivity. MoO3 has a refractive index of between 1.5 and 3 in the visible spectrum, which can therefore be used as an anti-reflection layer for solar cells made from silicon. In addition, based on the semiconducting properties of MoO3, it was estimated that it could serve as an emitter layer for a solar cell containing silicon. In this work, we calculated the photoelectric parameters of the MoO3/Si heterojunction solar cell using Sentaurus TCAD (Technology Computing Aided Design). According to the obtained results, the efficiency of the MoO3/Si solar cell with a MoO3 layer thickness of 100 nm and a Si layer thickness of 9 nm is 8.8%, which is 1.24% greater than the efficiency of a homojunction silicon-based solar cell of the same size. The greatest short-circuit current for a MoO3/Si heterojunction solar cell was observed at a MoO3 layer thickness of 60 nm, which was determined by studying the dependency of the heterojunction short-circuit current on the thickness of the MoO3 layer.

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Section: Methodsmentioning

confidence: 99%

Atom-to-Device Simulation of MoO3/Si Heterojunction Solar Cell

et al. 2022

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“…[ 189 ] It provides a promising approach to fabricate large‐area, defect‐free 3D periodic structures at the micro/nanoscale size both rapidly and cost‐effectively, [ 190 ] such as periodic nanocolumn, dot, dimple, stripe arrays, grating, and honeycomb structures. [ 191 ] In the IL process, interfered multiple beams of light are introduced to create a periodic pattern on the substrate. [ 192 ] The properties of the interference light field are determined by parameters such as the laser energy, spatial angle, incident angle, exposure time, and wavelength.…”

Section: Micro/nanoscale Technologies In Mechanical Metamaterialsmentioning

confidence: 99%

“…The IL technique has been developed for decades to prepare micro/nanoscale structures in the field of structural color, photonic crystals, bio‐cells, and multifunctional surfaces. [ 191 ] In the future, the combination of the ability of IL to fabricate ordered periodic micro/nanoscale structures with the diverse design methods of mechanical metamaterials will make it possible to create more advanced macroscopic properties of materials, such as superhydrophobicity, responsive structural color, resistance reduction, and reflection reduction. [ 193 ]…”

Section: Micro/nanoscale Technologies In Mechanical Metamaterialsmentioning

confidence: 99%

Advanced Fabrication of Mechanical Metamaterials Based on Micro/Nanoscale Technology

Chen,

Lin,

Salehi

et al. 2023

Adv Eng Mater

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In recent years, mechanical metamaterials have shown good mechanical properties such as ultra‐lightness, programmable stiffness, and tunable Poisson’s ratio through clever structural design of microstructures. Micro/nanotechnology has been used to ensure mechanical metamaterials’ fabrication quality and performance for use as structural substrates in multifunctional applications. Mechanical metamaterials are intentionally engineered with periodic microstructures in diverse shapes, allowing for the creation of complex structural substrates. However, this sophisticated design poses significant challenges in the fabrication process, particularly at the micro/nanoscale level, where current technology hinders mechanical metamaterials’ performance improvement and function realization. This review explores the fabrication processes of mechanical metamaterials using micro/nanotechnology and showcase recent progress and future trends. Particular attention is given to recent development, challenges, and future trends in advanced fabrication technologies for mechanical metamaterials. This survey aims to explain why mechanical metamaterials have significant benefits and are well‐suited as structural substrates for multifunctional applications, what advanced fabrication technologies at the micro/nanoscale have been introduced to prepare mechanical metamaterials and how to overcome manufacturing technology bottlenecks of mechanical metamaterials in terms of synthesis, materials and design method.This article is protected by copyright. All rights reserved.

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