SixGey:H-based micro-bolometers studied in the terahertz frequency range

Kosarev, A.; Rumyantsev, Sergey; Moreno, Mario; Torres, Alfonso; Boubanga, S.; Knap, W.

doi:10.1016/j.sse.2009.12.032

Cited by 17 publications

(5 citation statements)

References 14 publications

(14 reference statements)

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“…The graphene layer absorbs THz radiation, and the GNR array acts as a barrier area. The computational analysis validates that the voltage response of this structure’s bolometer can reach

, indicating that it has superior performance parameters compared to the bolometers discussed previously [ 28 ]. This work provides a theoretical basis for the fabrication of a graphene bolometer.…”

Section: Classification Of Graphene Terahertz Detectorssupporting

confidence: 70%

Recent Progress in the Development of Graphene Detector for Terahertz Detection

Liu

Jiang

et al. 2021

Sensors

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Terahertz waves are expected to be used in next-generation communications, detection, and other fields due to their unique characteristics. As a basic part of the terahertz application system, the terahertz detector plays a key role in terahertz technology. Due to the two-dimensional structure, graphene has unique characteristics features, such as exceptionally high electron mobility, zero band-gap, and frequency-independent spectral absorption, particularly in the terahertz region, making it a suitable material for terahertz detectors. In this review, the recent progress of graphene terahertz detectors related to photovoltaic effect (PV), photothermoelectric effect (PTE), bolometric effect, and plasma wave resonance are introduced and discussed.

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“…The graphene layer absorbs THz radiation, and the GNR array acts as a barrier area. The computational analysis validates that the voltage response of this structure’s bolometer can reach

Section: Classification Of Graphene Terahertz Detectorssupporting

confidence: 70%

Recent Progress in the Development of Graphene Detector for Terahertz Detection

Liu

Jiang

et al. 2021

Sensors

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“…This performance is 110 times the photo-detection sensitivity of the pristine CNT-film-based PTE sensor: parallel channel–electrode coupling structure with a device width of 1 mm ( Figure 3 k: transmissive XY scanning of a concealed metallic clip under FIR irradiation with a single-pixel device). The obtained photo-detection sensitivity is also comparable with that of cutting-edge solid-state photo-detectors, such as the bolometer [ 45 , 46 ] and Schottky barrier diodes [ 47 ]. The obtained 110-times photo-detection sensitivity enhancement involves six factors: series channel–electrode coupling, employing Bi, electrode length optimization, conformal coating of the series electrode, and device width optimization.…”

Section: Pte Effect In Channel–electrode Junctionssupporting

confidence: 52%

Recent Progress in Development of Carbon-Nanotube-Based Photo-Thermoelectric Sensors and Their Applications in Ubiquitous Non-Destructive Inspections

Kinoshita

Sakai

et al. 2022

Micromachines

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The photo-thermoelectric (PTE) effect in electronic materials effectively combines photo-absorption-induced local heating and associated thermoelectric conversion for uncooled and broadband photo-detection. In particular, this work comprehensively summarizes the operating mechanism of carbon nanotube (CNT)-film-based PTE sensors and ubiquitous non-destructive inspections realized by exploiting the material properties of CNT films. Formation of heterogeneous material junctions across the CNT-film-based PTE sensors, namely photo-detection interfaces, triggers the Seebeck effect with photo-absorption-induced local heating. Typical photo-detection interfaces include a channel–electrode boundary and a junction between P-type CNTs and N-type CNTs (PN junctions). While the original CNT film channel exhibits positive Seebeck coefficient values, the material selections of the counterpart freely govern the intensity and polarity of the PTE response signals. Based on these operating mechanisms, CNT film PTE sensors demonstrate a variety of physical and chemical non-destructive inspections. The device aggregates broad multi-spectral optical information regarding the targets and reconstructs their inner composite or layered structures. Arbitrary deformations of the device are attributed to the macroscopic flexibility of the CNT films to further monitor targets from omni-directional viewing angles without blind spots. Detection of blackbody radiation from targets using the device also visualizes their behaviors and associated changes.

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“…[129] Because each processing method has different advantages, an appropriate processing method is selected according to the desired structure. A p-n Bolometer [ 115] Thermal Broad THz-NIR 1 ms 200 pW Hz −1/2 Rigid Photo imaging Photo sensing MEMS bolometer [ 111] Thermal Broad THz-NIR Pyro-electric [ 116] Thermal Sub-THz 2.3 ms 20 nW Hz −1/2 Rigid Photo imaging Photo sensing SBD [112] Electronic THz 1 μs 3 6 . 2 p W H z −1/2 Rigid Photo imaging Photo sensing CMOS [ 113] Electronic Sub-THz N.A.…”

Section: Noise Equivalent Powermentioning

confidence: 99%

Broadband Photodetectors and Imagers in Stretchable Electronics Packaging

Araki

Suzuki

et al. 2023

Advanced Materials

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The integration of flexible electronics with optics can help realize a powerful tool that facilitates the creation of a smart society wherein internal evaluations can be easily performed nondestructively from the surface of various objects that is used or encountered in daily lives. Here, organic‐material‐based stretchable optical sensors and imagers that possess both bending capability and rubber‐like elasticity are reviewed. The latest trends in nondestructive evaluation equipment that enable simple on‐site evaluations of health conditions and abnormalities are discussed without subjecting the targeted living bodies and various objects to mechanical stress. Real‐time performance under real‐life conditions is becoming increasingly important for creating smart societies interwoven with optical technologies. In particular, the terahertz (THz)‐wave region offers a substance‐ and state‐specific fingerprint spectrum that enables instantaneous analyses. However, to make THz sensors accessible, the following issues must be addressed: broadband and high‐sensitivity at room temperature, stretchability to follow the surface movements of targets, and digital transformation compatibility. The materials, electronics packaging, and remote imaging systems used to overcome these issues are discussed in detail. Ultimately, stretchable optical sensors and imagers with highly sensitive and broadband THz sensors can facilitate the multifaceted on‐site evaluation of solids, liquids, and gases.

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SixGey:H-based micro-bolometers studied in the terahertz frequency range

Cited by 17 publications

References 14 publications

Recent Progress in the Development of Graphene Detector for Terahertz Detection

Recent Progress in the Development of Graphene Detector for Terahertz Detection

Recent Progress in Development of Carbon-Nanotube-Based Photo-Thermoelectric Sensors and Their Applications in Ubiquitous Non-Destructive Inspections

Broadband Photodetectors and Imagers in Stretchable Electronics Packaging

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