Mid-Wave Infrared Graphene Photodetectors With High Responsivity for On-Chip Gas Sensors

Alaloul, Mohammed; Al-Ani, Ibrahim; As’ham, Khalil; Khurgin, Jacob B.; Hattori, Haroldo T.; Miroshnichenko, Andrey E.

doi:10.1109/jsen.2022.3221886

Cited by 10 publications

(8 citation statements)

References 51 publications

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“…[238][239][240] Mid-infrared PDs have a wide range of applications in onchip optical communication, free-space communication, and more. 241,242 Table 1 summarizes the outstanding research achievements in various wavelength bands.…”

Section: Applicationsmentioning

confidence: 99%

“…94,255 Researchers achieved a PTE PD using graphene and slot waveguide on sapphire-on-insulator, which could operate in the midinfrared range and detect three common greenhouse gases including CO 2 , CH 4 , and N 2 O. 241 In addition, another study utilized graphene-based polymer WI PDs for bio-chemical sensor applications. 249 The sensing platform can be used for the detection of various bio-analytes and bio-reactions.…”

Section: ) Terahertz Communicationmentioning

confidence: 99%

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On-chip two-dimensional material-based waveguide-integrated photodetectors

He,

Wang,

Peng

et al. 2024

J. Mater. Chem. C

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Section: Applicationsmentioning

confidence: 99%

Section: ) Terahertz Communicationmentioning

confidence: 99%

On-chip two-dimensional material-based waveguide-integrated photodetectors

He,

Wang,

Peng

et al. 2024

J. Mater. Chem. C

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“…Mid-wave infrared (MWIR) absorption spectroscopy is another gas-sensing method worth mentioning, as it is suitable for mass-producing compact and inexpensive devices and systems [132]. A MWIR graphene photodetector was recently proposed that is integrated into silicon-on-sapphire (SOS) slot waveguides for on-chip absorption spectroscopy measurements of gases.…”

Section: Opticalmentioning

confidence: 99%

Wearable Nano-Based Gas Sensors for Environmental Monitoring and Encountered Challenges in Optimization

Hooshmand,

Kassanos,

Keshavarz

et al. 2023

Sensors

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With a rising emphasis on public safety and quality of life, there is an urgent need to ensure optimal air quality, both indoors and outdoors. Detecting toxic gaseous compounds plays a pivotal role in shaping our sustainable future. This review aims to elucidate the advancements in smart wearable (nano)sensors for monitoring harmful gaseous pollutants, such as ammonia (NH3), nitric oxide (NO), nitrous oxide (N2O), nitrogen dioxide (NO2), carbon monoxide (CO), carbon dioxide (CO2), hydrogen sulfide (H2S), sulfur dioxide (SO2), ozone (O3), hydrocarbons (CxHy), and hydrogen fluoride (HF). Differentiating this review from its predecessors, we shed light on the challenges faced in enhancing sensor performance and offer a deep dive into the evolution of sensing materials, wearable substrates, electrodes, and types of sensors. Noteworthy materials for robust detection systems encompass 2D nanostructures, carbon nanomaterials, conducting polymers, nanohybrids, and metal oxide semiconductors. A dedicated section dissects the significance of circuit integration, miniaturization, real-time sensing, repeatability, reusability, power efficiency, gas-sensitive material deposition, selectivity, sensitivity, stability, and response/recovery time, pinpointing gaps in the current knowledge and offering avenues for further research. To conclude, we provide insights and suggestions for the prospective trajectory of smart wearable nanosensors in addressing the extant challenges.

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“…Near-infrared (NIR) photodetectors, as key building blocks of photonic integrated circuits, exhibit attractive potential applications in optical communications, biomedical imaging, spectroscopy, and gas sensing [1][2][3][4]. To fabricate high-performance NIR photodetectors, various narrow-bandgap semiconductor materials, such as Si, Ge, InP, InGaAs, and two-dimensional (2D) transition metal dichalcogenides (TMDCs) [5][6][7][8][9][10][11], have attracted increasing attention.…”

Section: Introductionmentioning

confidence: 99%

Two-dimensional molybdenum ditelluride waveguide-integrated near-infrared photodetector

Wang,

Zeng,

Shen

et al. 2024

Nanotechnology

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Low-cost, small-sized, and easy integrated high-performance photodetectors for photonics are still the bottleneck of photonic integrated circuits applications and have attracted increasing attention. The tunable narrow bandgap of two-dimensional (2D) layered molybdenum ditelluride (MoTe2) from ~0.83 to ~1.1 eV makes it one of the ideal candidates for near-infrared (NIR) photodetectors. Herein, we demonstrate an excellent waveguide-integrated NIR photodetector by transferring mechanically exfoliated 2D MoTe2 onto a silicon nitride (Si3N4) waveguide. The photoconductive photodetector exhibits excellent responsivity (R), detectivity (D*), and external quantum efficiency (EQE) at 1550 nm and 50 mV, which are 41.9 A/W, 16.2 × 1010 Jones, and 3360%, respectively. These optoelectronic performances are 10.2 times higher than those of the free-space device, revealing that the photoresponse of photodetectors can be enhanced due to the presence of waveguide. Moreover, the photodetector also exhibits competitive performances over a broad wavelength range from 800 to 1000 nm with a high R of 15.4 A/W and a large D* of 59.6 × 109 Jones. Overall, these results provide an alternative and prospective strategy for high-performance on-chip broadband NIR photodetectors.

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Mid-Wave Infrared Graphene Photodetectors With High Responsivity for On-Chip Gas Sensors

Cited by 10 publications

References 51 publications

On-chip two-dimensional material-based waveguide-integrated photodetectors

On-chip two-dimensional material-based waveguide-integrated photodetectors

Wearable Nano-Based Gas Sensors for Environmental Monitoring and Encountered Challenges in Optimization

Two-dimensional molybdenum ditelluride waveguide-integrated near-infrared photodetector

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