Mid-infrared semimetal polarization detectors with configurable polarity transition

Wei, Jingxuan; Xu, Cheng; Dong, Bowei; Qiu, Cheng‐Wei; Lee, Chengkuo

doi:10.1038/s41566-021-00819-6

Cited by 126 publications

(99 citation statements)

References 49 publications

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“…Therefore, on-chip polarization-sensitive photodetectors offer unique opportunities to detect chiral molecules such as glucose [222]. In 2021, Wei et al proposed a mid-infrared graphene detector with polarization-detection capability [211], as shown in Figure 5g. The nanoantenna is patterned on top of the graphene detector to enable a configurable polarization sensitivity.…”

Section: Gas Sensingmentioning

confidence: 99%

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Recent Progress in the Energy Harvesting Technology—From Self-Powered Sensors to Self-Sustained IoT, and New Applications

et al. 2021

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With the fast development of energy harvesting technology, micro-nano or scale-up energy harvesters have been proposed to allow sensors or internet of things (IoT) applications with self-powered or self-sustained capabilities. Facilitation within smart homes, manipulators in industries and monitoring systems in natural settings are all moving toward intellectually adaptable and energy-saving advances by converting distributed energies across diverse situations. The updated developments of major applications powered by improved energy harvesters are highlighted in this review. To begin, we study the evolution of energy harvesting technologies from fundamentals to various materials. Secondly, self-powered sensors and self-sustained IoT applications are discussed regarding current strategies for energy harvesting and sensing. Third, subdivided classifications investigate typical and new applications for smart homes, gas sensing, human monitoring, robotics, transportation, blue energy, aircraft, and aerospace. Lastly, the prospects of smart cities in the 5G era are discussed and summarized, along with research and application directions that have emerged.

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Section: Gas Sensingmentioning

confidence: 99%

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confidence: 99%

Recent Progress in the Energy Harvesting Technology—From Self-Powered Sensors to Self-Sustained IoT, and New Applications

et al. 2021

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“…In addition, the MIR band covers several atmospheric windows (such as 3~5 µm) that are available for free-space light applications, including thermal imaging, light detection and ranging (LIDAR) systems, etc. [4][5][6][7][8][9][10][11][12][13]. Silicon photonics, a gradually matured technology in the near-infrared (NIR) telecommunication range, offers a promising solution to photonic integrated circuits (PICs) in low-cost and high-volume manufacturing [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

“…The high transparency of the waveguide platform is desired for the low-loss on-chip waveguide propagation. In the past few years, high-performance MIR waveguides have been explored on silicon-on-insulator (SOI) [10,[17][18][19], germanium-on-silicon (GOS) [20][21][22], sapphire-onsilicon (SOS) [23], aluminum nitride-on-insulator (ANOI) [24], and SiGe alloy-on-silicon (SGOS) [25] platforms. Silicon, as the dominating material in NIR photonics, remains attractive in the MIR.…”

Section: Introductionmentioning

confidence: 99%

Suspended Silicon Waveguide with Sub-Wavelength Grating Cladding for Optical MEMS in Mid-Infrared

et al. 2021

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Mid-infrared (MIR) photonics are generating considerable interest because of the potential applications in spectroscopic sensing, thermal imaging, and remote sensing. Silicon photonics is believed to be a promising solution to realize MIR photonic integrated circuits (PICs). The past decade has seen a huge growth in MIR PIC building blocks. However, there is still a need for the development of MIR reconfigurable photonics to enable powerful on-chip optical systems and new functionalities. In this paper, we present an MIR (3.7~4.1 μm wavelength range) MEMS reconfiguration approach using the suspended silicon waveguide platform on the silicon-on-insulator. With the sub-wavelength grating claddings, the photonic waveguide can be well integrated with the MEMS actuator, thus offering low-loss, energy-efficient, and effective reconfiguration. We present a simulation study on the waveguide design and depict the MEMS-integration approach. Moreover, we experimentally report the suspended waveguide with propagation loss (−2.9 dB/cm) and bending loss (−0.076 dB each). The suspended waveguide coupler is experimentally investigated. In addition, we validate the proposed optical MEMS approach using a reconfigurable ring resonator design. In conclusion, we experimentally demonstrate the proposed waveguide platform’s capability for MIR MEMS-reconfigurable photonics, which empowers the MIR on-chip optical systems for various applications.

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“…在规模较大的二维材料体系中，有一类命名为二维金属硫属化合物的半导体材料由于其独特的晶体结构还带来了一些新的应用场景，比如基于各向异性晶体结构材料的偏振敏感光电探测器 [33][34][35][36][37] .二维金属硫属化合物的种类繁多，覆盖了金属性质的导体、不同带隙宽度的半导体、甚至是具有独特属性的超导体和拓扑绝缘体 [3] .二维金属硫属化合物还可以通过多种材料组建异质结的方式实现电学和光电性能的提高 [38,39] .如图 1(a)所示，本课题组对元素周期表中用蓝色 [40] 、SnSe [41] 、SnS2 [42] 、SnSe2 [43] 、GeS [44] 、GeS2 [45] 、GeSe [46] 和 GeSe2 [47] )都是半导体，为本课题组的研究重点，其具体形成化合物的结合方式如图 1(b)所示，这类二维半导体材料基本的物理性质已在表一中进行列举，部分材料还具有一些独特的物理特性： SnS2 [48] 和 SnSe2 [49] 具有出色的光电性能；SnSe [50][51][52] 和 SnS [53] 具有低对称的晶体结构，表现出优异的各向异性，可用于热电和偏振光探测.…”

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Research progress of IV–VI low-dimensional semiconductor materials and devices

Yu¹,

Wei²,

Xia³

2021

Sci. Sin.-Chim

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The two-dimensional group IV metal chalcogenides are an important part of twodimensional layered materials, because of its lattice structure with low symmetry and semiconductor technology has good compatibility, its rich resources on earth and has the characteristics of low cost, environmental protection, in electrical, optical, magnetic, etc have excellent performance, therefore has a great potential for application in the field of photoelectric devices. This paper first introduces the preparation method of 2D IV metal chondrides and related ternary alloys and heterojunctions, and then introduces the structure and properties of the materials in detail. Finally, the characteristics of photoelectric devices based on 2D IV metal chondrides are analyzed in detail. The application of IV metallic chalcogenides with in-plane anisotropy is extended to polarization-sensitive photodetectors. In this paper, the work of our research group in the IV-VI low-dimensional semiconductor field in recent years is summarized, and the future work is prospected.

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Mid-infrared semimetal polarization detectors with configurable polarity transition

Cited by 126 publications

References 49 publications

Recent Progress in the Energy Harvesting Technology—From Self-Powered Sensors to Self-Sustained IoT, and New Applications

Recent Progress in the Energy Harvesting Technology—From Self-Powered Sensors to Self-Sustained IoT, and New Applications

Suspended Silicon Waveguide with Sub-Wavelength Grating Cladding for Optical MEMS in Mid-Infrared

Research progress of IV–VI low-dimensional semiconductor materials and devices

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Mid-infrared semimetal polarization detectors with configurable polarity transition

Cited by 126 publications

References 49 publications

Recent Progress in the Energy Harvesting Technology—From Self-Powered Sensors to Self-Sustained IoT, and New Applications

Recent Progress in the Energy Harvesting Technology—From Self-Powered Sensors to Self-Sustained IoT, and New Applications

Suspended Silicon Waveguide with Sub-Wavelength Grating Cladding for Optical MEMS in Mid-Infrared

Research progress of IV&ndash;VI low-dimensional semiconductor materials and devices

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Research progress of IV–VI low-dimensional semiconductor materials and devices