High sensitive gas sensors realized by a transfer-free process of CVD graphene

Ricciardella, Filiberto; Vollebregt, Sten; Polichetti, T.; Alfano, Brigida; Massera, Ettore; Sarro, P.M.

doi:10.1109/icsens.2016.7808638

Cited by 16 publications

(27 citation statements)

References 13 publications

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“…The sensor worked without electricity; was soft, wearable, and small; and performed well, thus having broad application prospects. In 2017, Ricciardella F from Delft University of Technology prepared the graphene sensing layer by chemical vapor deposition on pre-patterned catalyst and then it was eased onto the underlying SiO2 through a completely transfer-free process [63]. The gas sensing materials had different line width: 5 and 10 μm.…”

Section: Gas Sensors Based On Pristine Graphenementioning

confidence: 99%

Research Progress of Gas Sensor Based on Graphene and Its Derivatives: A Review

2018

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Featured Application: gas sensors based on graphene and its derivatives have brilliant development prospects on innovating composite material and designing appropriate structure.Abstract: Gas sensors are devices that convert a gas volume fraction into electrical signals, and they are widely used in many fields such as environmental monitoring. Graphene is a new type of two-dimensional crystal material that has many excellent properties including large specific surface area, high conductivity, and high Young's modulus. These features make it ideally suitable for application for gas sensors. In this paper, the main characteristics of gas sensor are firstly introduced, followed by the preparation methods and properties of graphene. In addition, the development process and the state of graphene gas sensors are introduced emphatically in terms of structure and performance of the sensor. The emergence of new candidates including graphene, polymer and metal/metal oxide composite enhances the performance of gas detection significantly. Finally, the clear direction of graphene gas sensors for the future is provided according to the latest research results and trends. It provides direction and ideas for future research.2 of 21 excellent conductivity, and easy adsorption of gas molecules, and the surface can easily be modified by functional groups, so it has good gas sensing properties.Graphene, a monolayer of graphite sheet consisting of sp 2 hybridized carbon atoms covalently bonded to three other atoms which was first isolated by Geim and Novoselov using micro-mechanical peeling of graphite in 2004, so they won the 2010 Nobel Prize in Physics [8]. Graphene is the thinnest and highest strength material in nature at present and has the advantages of strong electric conductivity and heat conductivity, and is almost transparent and dense, thus attracts people's attention [9].Nowadays, there are many studies about graphene gas sensors focused on the performance improvement in the field of composite materials, computational chemistry and Micro-Electro-Mechanical System (MEMS). Considering the practical application of graphene gas sensor, we need to find the most potential direction. In this article, the development process and the state of art of graphene gas sensors are introduced. The direction of graphene gas sensors for the future is also provided. The review provides important reference for follow-up research work. Gas Sensor Key Parameters of Gas SensorGas sensors are the crucial components to detect the type and concentration of gas. The components can transform gas composition, gas concentration and other information from non-electricity to electricity to achieve the measurement of gas [10].The key parameters of gas sensor measuring performance include the following aspects [11]:

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Section: Gas Sensors Based On Pristine Graphenementioning

confidence: 99%

Research Progress of Gas Sensor Based on Graphene and Its Derivatives: A Review

2018

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“…Here, we present the performances of the gas chemi-resistors based on graphene fabricated through a process specifically developed to lower the growth temperature down to 850 °C. This value is significantly much lower than the 980 °C usually adopted as graphene growth temperature [2,4,5]. The choice to reduce the growth temperature is motivated by the fact that a lower growth temperature can reduce the energy consumption during the graphene growth and facilitate large scale production of these gas sensors.…”

Section: Introductionmentioning

confidence: 97%

“…However, for practical applications, the bottleneck related to the CVD technique is inherent to the graphene transfer from the catalyst substrate to the target one [3]. On this regard, we have recently reported a transfer-free process (TFP) that prevents any issue related to the graphene transfer [4]. In our previous work, graphene-based gas sensors prepared through TFP were found to be able to achieve extremely low limit of detection (LOD), in the range of a few hundred ppb of NO2, and resulted scarcely sensitive towards NH3 [4].…”

Section: Introductionmentioning

confidence: 99%

“…On this regard, we have recently reported a transfer-free process (TFP) that prevents any issue related to the graphene transfer [4]. In our previous work, graphene-based gas sensors prepared through TFP were found to be able to achieve extremely low limit of detection (LOD), in the range of a few hundred ppb of NO2, and resulted scarcely sensitive towards NH3 [4]. Here, we present the performances of the gas chemi-resistors based on graphene fabricated through a process specifically developed to lower the growth temperature down to 850 °C.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Low Temperature CVD Grown Graphene for Highly Selective Gas Sensors Working under Ambient Conditions

Ricciardella

Vollebregt

Polichetti

et al. 2017

Proceedings of Eurosensors 2017, Paris, France, 3–6 September 2017

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Abstract:In this paper we report on gas sensors based on graphene grown by Chemical Vapor Deposition at 850 °C. Mo was used as catalyst for graphene nucleation. Resistors were directly designed on pre-patterned Mo using the transfer-free process we recently developed, thus avoiding films damage during the transfer to the target substrate. Devices operating at room temperature and relative humidity set at 50% were tested towards NO2. The sensors resulted to be highly specific towards NO2 and showed current variation up to 6%. The performances were compared with those of gas sensors based on graphene grown at 980 °C, which represents the usual growth temperature for such material. The findings show that by lowering the graphene growth temperature and consequently the energy consumptions the sensing benefits of these devices are still preserved.

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“…However, the mechanism of interaction between graphene and the adsorbing molecules is particularly dependent of each target chemical species [3][4][5][6][10][11][12]. Among the diversity of existing target gases, ammonia (NH3) has been widely studied for graphene-based sensors [13][14][15][16][17][18][19][20][21][22][23] due to its great significance for industrial applications [24]. Theoretical works show that charge transferred from NH3 to graphene is dependent on the orientation of the NH3 molecules [25,26].…”

Section: Introductionmentioning

confidence: 99%