The influences of temperature, humidity, and O2 on electrical properties of graphene FETs

Hayasaka, Tomoaki; Kubota, Yoshihiro; Liu, Yumeng; Liu, Lin

doi:10.1016/j.snb.2019.01.037

Cited by 38 publications

(27 citation statements)

References 35 publications

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“…The correlation coefficient ( R 2 ) obtained by calculation is 0.95045, which indicates that the aligned InNdO nanofiber FET sensor can detect even when the gas concentration is very low. Additionally, the theoretical limit of detection (LOD) is also used to decide the sensing performance and expressed as follows: 11,50 …”

Section: Resultsmentioning

confidence: 99%

Ultrasensitive room-temperature acetone gas sensors employing green-solvent-processed aligned InNdO nanofiber field-effect transistors

Chen

et al. 2022

J. Mater. Chem. C

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Section: Resultsmentioning

confidence: 99%

Ultrasensitive room-temperature acetone gas sensors employing green-solvent-processed aligned InNdO nanofiber field-effect transistors

Chen

et al. 2022

J. Mater. Chem. C

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“…As shown in Figures 6f and S5, It can be found that the maximum response value of InYb 4% O nanofiber FET gas sensors gradually decreases with the increasing working temperature, which is attributed to the change in the working region with the increment of the working temperature. 8,63 Figure S5 shows the transfer curves of the InYb 4% O nanofiber FET at different temperatures ranging from 25 to 80 °C. As the measurement temperatures increase, V TH shifts toward the negative direction and SS gradually increases.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Electrospun Yb-Doped In₂O₃ Nanofiber Field-Effect Transistors for Highly Sensitive Ethanol Sensors

Chen

et al. 2020

ACS Appl. Mater. Interfaces

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Enhancing the reliability and sensitivity of gas sensors based on FETs has been of extensive concern for their practical application. However, few reports are available on nanofiber FET gas sensors fabricated by the electrospinning process. In this work, ethanol gas sensors based on Yb-doped In2O3 (InYbO) nanofiber FETs are fabricated by a simple and fast electrospinning method. The optimized In2O3 nanofiber FETs with a doping concentration of 4 mol % show a better electrical performance, including a high mobility of 6.67 cm2/Vs, an acceptable threshold voltage of 3.27 V, and a suitable on/off current ratio of 107, especially the enhanced bias-stress stability. When employed in ethanol gas sensors, the gas sensors exhibit enhanced stability and improved sensitivity with a high response of 40–10 ppm, which is remarkably higher than that of previously reported ethanol gas sensors. Moreover, the InYbO nanofiber FET sensors also demonstrate a low limit of detection of 1 ppm and improved sensing performance ranging from sensitivity to the ability of selectivity. This work opens up a new prospect to achieve highly sensitive, selective, and reliable ethanol gas sensors using electrospun Yb-In2O3 nanofiber FETs with improved stability.

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“…A specific challenge is ensuring that sensing devices can be operated over large distances for remote monitoring and provide accurate readings despite the drone’s rapid movement and environmental fluctuations. In particular, changes in humidity and temperature are known to induce changes in graphene’s electrical properties, potentially leading to a high noise level when graphene is used as a chemiresistor [ 28 , 29 , 30 , 31 ]. Recent research showed that environmentally induced signal variations can be resolved when the device is kept at a high temperature of 110 °C [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

Drone-Mountable Gas Sensing Platform Using Graphene Chemiresistors for Remote In-Field Monitoring

Park

Jumu

Power

et al. 2022

Sensors

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We present the design, fabrication, and testing of a drone-mountable gas sensing platform for environmental monitoring applications. An array of graphene-based field-effect transistors in combination with commercial humidity and temperature sensors are used to relay information by wireless communication about the presence of airborne chemicals. We show that the design, based on an ESP32 microcontroller combined with a 32-bit analog-to-digital converter, can be used to achieve an electronic response similar, within a factor of two, to state-of-the-art laboratory monitoring equipment. The sensing platform is then mounted on a drone to conduct field tests, on the ground and in flight. During these tests, we demonstrate a one order of magnitude reduction in environmental noise by reducing contributions from humidity and temperature fluctuations, which are monitored in real-time with a commercial sensor integrated to the sensing platform. The sensing device is controlled by a mobile application and uses LoRaWAN, a low-power, wide-area networking protocol, for real-time data transmission to the cloud, compatible with Internet of Things (IoT) applications.

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The influences of temperature, humidity, and O2 on electrical properties of graphene FETs

Cited by 38 publications

References 35 publications

Ultrasensitive room-temperature acetone gas sensors employing green-solvent-processed aligned InNdO nanofiber field-effect transistors

Ultrasensitive room-temperature acetone gas sensors employing green-solvent-processed aligned InNdO nanofiber field-effect transistors

Electrospun Yb-Doped In₂O₃ Nanofiber Field-Effect Transistors for Highly Sensitive Ethanol Sensors

Drone-Mountable Gas Sensing Platform Using Graphene Chemiresistors for Remote In-Field Monitoring

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The influences of temperature, humidity, and O2 on electrical properties of graphene FETs

Cited by 38 publications

References 35 publications

Ultrasensitive room-temperature acetone gas sensors employing green-solvent-processed aligned InNdO nanofiber field-effect transistors

Ultrasensitive room-temperature acetone gas sensors employing green-solvent-processed aligned InNdO nanofiber field-effect transistors

Electrospun Yb-Doped In2O3 Nanofiber Field-Effect Transistors for Highly Sensitive Ethanol Sensors

Drone-Mountable Gas Sensing Platform Using Graphene Chemiresistors for Remote In-Field Monitoring

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Product

Resources

About

Electrospun Yb-Doped In₂O₃ Nanofiber Field-Effect Transistors for Highly Sensitive Ethanol Sensors