Graphene based field-effect transistor biosensors functionalized using gas-phase synthesized gold nanoparticles

Danielson, Eric; Sontakke, Vyankat A.; Porkovich, Alexander James; Wang, Zhenwei; Kumar, Pawan; Ziadi, Zakaria; Yokobayashi, Yohei; Sowwan, Mukhles

doi:10.1016/j.snb.2020.128432

Cited by 73 publications

(59 citation statements)

References 48 publications

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“…Top-gated GFETs are widely found in publications related to RF applications [ 16 , 17 , 18 ], and are also very promising in the development of graphene-based liquid-gate transistors (SGFETs), with a wide range of applications in biosensors [ 19 ].…”

Section: Most Common Graphene Transistor Topologiesmentioning

confidence: 99%

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2D Electronics Based on Graphene Field Effect Transistors: Tutorial for Modelling and Simulation

2021

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This paper provides modeling and simulation insights into field-effect transistors based on graphene (GFET), focusing on the devices’ architecture with regards to the position of the gate (top-gated graphene transistors, back-gated graphene transistors, and top-/back-gated graphene transistors), substrate (silicon, silicon carbide, and quartz/glass), and the graphene growth (CVD, CVD on SiC, and mechanical exfoliation). These aspects are explored and discussed in order to facilitate the selection of the appropriate topology for system-level design, based on the most common topologies. Since most of the GFET models reported in the literature are complex and hard to understand, a model of a GFET was implemented and made available in MATLAB, Verilog in Cadence, and VHDL-AMS in Simplorer—useful tools for circuit designers with different backgrounds. A tutorial is presented, enabling the researchers to easily implement the model to predict the performance of their devices. In short, this paper aims to provide the initial knowledge and tools for researchers willing to use GFETs in their designs at the system level, who are looking to implement an initial setup that allows the inclusion of the performance of GFETs.

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Section: Most Common Graphene Transistor Topologiesmentioning

confidence: 99%

“… Top-gated graphene transistors: ( a ) single-gate [ 16 ]; ( b ) two-fingers [ 18 ]; ( c ) topology of the two-fingers transistor; ( d ) top-liquid gate [ 19 ]; and ( e ) topology of the top-liquid gate. …”

Section: Figurementioning

confidence: 99%

2D Electronics Based on Graphene Field Effect Transistors: Tutorial for Modelling and Simulation

2021

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“…Graphene nanosheets, a honeycomb structured carbon material, possess unique properties like high thermal stability, mechanical strength, and excellent electrical conductivity [1,2]. By virtue of its distinct characteristics, attention was drawn to represent graphene in the development of novel devices which can be used in various applications spanned from electronics to the medical field [3][4][5]. However, the zero-band gap nature of graphene restricts its application in optoelectronic devices effectively.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of graphene: CdSe quantum dots/CdS nanorod heterojunction photodetector and role of graphene to enhance the photoresponsive characteristics

et al. 2021

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Integration of graphene with semiconducting quantum dots (QDs) provides an elegant way to access the intrinsic properties of graphene and optical properties of QDs in a single hand to realize the high-performance optoelectronic devices. In the present study, high-performance photodetector based on graphene: CdSe QDs/CdS nanorod heterostructures, are demonstrated. The resulting heterojunction photodetector with device configuration ITO/graphene: CdSe/CdS nanorods/Ag show excellent operating characteristics including a maximum photoresponsivity of 15.95 AW -1 and specific detectivity of 6.85×10 12 Jones measured at 530 nm. The device exhibits a photoresponse rise time of 545 ms and a decay time of 539 ms. Furthermore, the effect of graphene nanosheets on the performance enhancement of heterojunction photodetector was explored. The results indicate that, due to the enhanced energy transfer from photoexcited QDs to graphene layer, light absorption is increased and excitons are generated. Also, the graphene: CdSe QDs/CdS nanorod interface can facilitate charge carrier transport effectively. This work provides a promising approach to develop high-performance visible-light photodetectors and utilization of advantageous features of graphene in optoelectronic devices.

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“…The pH sensors have widely attracted attention and been used for biological and chemical applications, such as biosensors [1][2][3], the medical community [4][5][6], and clinical measurements [7]. Since the first ion-sensitive field-effect transistor (ISFET) was fabricated by Bergveld in 1970 [8], several teams in the world have studied to improve the sensing performance of the ISFET [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Characterization of In0.9Ga0.1O EGFET pH Sensors

2021

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In this study, the In0.9Ga0.1O sensing membrane were deposited by using the RF magnetron sputtering at room temperature and combined with commercial MOSFETs as the extended gate field effect transistor (EGFET) pH sensors. The sensing performance of the In0.9Ga0.1O EGFET pH sensors were measured and analyzed in the pH value of range between 2 to 12. In the saturation region, the pH current sensitivity calculated from the linear relationship between the and pH value was approximately 56.64 μA/pH corresponding to the linearity of 97.8%. In the linear region, the pH voltage sensitivity exhibited high sensitivity and linearity of 43.7 mV/pH and 96.3%, respectively. The In0.9Ga0.1O EGFET pH sensors were successfully fabricated and exhibited great linearity. The analyzed results indicated that the In0.9Ga0.1O was a robust material as a promising sensing membrane and effectively used for pH sensing detection application.

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Graphene based field-effect transistor biosensors functionalized using gas-phase synthesized gold nanoparticles

Cited by 73 publications

References 48 publications

2D Electronics Based on Graphene Field Effect Transistors: Tutorial for Modelling and Simulation

2D Electronics Based on Graphene Field Effect Transistors: Tutorial for Modelling and Simulation

Fabrication of graphene: CdSe quantum dots/CdS nanorod heterojunction photodetector and role of graphene to enhance the photoresponsive characteristics

Fabrication and Characterization of In0.9Ga0.1O EGFET pH Sensors

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