Advertisement

Topics

Study of field emission property of pure graphene-CNT heterostructure connected via seamless interface.

08:00 EDT 9th April 2019 | BioPortfolio

Summary of "Study of field emission property of pure graphene-CNT heterostructure connected via seamless interface."

The vertically aligned Carbon Nanotubes have proved to be one of the best material as an efficient field emitter. To further improve its efficiency as well as long-term use in practical devices, it is involuntary to reduce the quantum resistance originating due to interface between electrode and emitters and the entanglement of the CNTs in bundle texture. Thus incorporation of graphene at the bottom of CNT bundles via seamless carbonaceous interface can easily solve this bottleneck. In this work we have first time demonstrated growth and field emission (FE) properties of pure seamless graphene-CNTs heterostructures (SGCNTs) and pure seamless graphene-vertically patterned oriented CNTs heterostructures (SGVCNTs) on Si/SiO2 substrate in contrast to the bare CNT mats and Few-layer graphene (FLG) without any tedious post transfer process. It was observed that seamless SGVCNTs show better field emission performance in terms of higher current density (236mA/cm2), lowering turn-on field (0.45V/µm) and threshold field (1.931 V/µm @100mA/cm2), high current density (236 mA/cm2) and improved field enhancement factor (β~ 41315) which is tailored by~ 4 fold as compared to bare CNT mat. The significant improvement of the field emission performance of SGVCNTs is mainly attributed due to low resistive seamless covalent carbonaceous interface, higher number of emitter sites and patterned vertical orientation that leads to long-term stability of the field emitter with a minimum loss till 32 hours. This finding could provide an important solution of carbonaceous materials based field emitter for real phase device application.

Affiliation

Journal Details

This article was published in the following journal.

Name: Nanotechnology
ISSN: 1361-6528
Pages:

Links

DeepDyve research library

PubMed Articles [19947 Associated PubMed Articles listed on BioPortfolio]

Misfit strain-induced energy dissipation for graphene/MoS2 heterostructure nanomechanical resonators.

Misfit strain is inevitable in various heterostructures like the graphene/MoS2 van der Waals heterostructure. Although the misfit strain effect on electronic and other physical properties have been we...

Ultrahigh Photoresponsive Device Based on ReS/Graphene Heterostructure.

Heterostructures that combine graphene and transition metal dichalcogenides, such as MoS, MoTe, and WS, have attracted attention due to their high performances in optoelectronic devices compared to ho...

Tunable 2D-gallium arsenide and graphene bandgaps in graphene/GaAs heterostructure: An ab-initio study.

2D-GaAs bandgap nature and graphene opening bandgap have been investigated in unexplored Graphene/GaAs bilayer van der Waals heterostructure under both uniaxial stress along c axis and different plana...

Near unity charge separation efficiency leads to pure ultraviolet emission in few layer graphene nanosheets.

Two-dimensional materials with Van der Waals (vdW) structure attract intense interest due to the high performance in ultrathin optoelectronic device. In particular, the high efficiency charge separati...

Ultra-sensitive and plasmon-tunable graphene photodetectors for micro-spectrometry.

We demonstrate an ultra-sensitive photodetector based on a graphene/monolayer MoS2 vertical heterostructure working at room temperature. Highly confined plasmon waves are efficiently excited through a...

Clinical Trials [2597 Associated Clinical Trials listed on BioPortfolio]

Dielectric Property Test Compared With Frozen Pathological Section in the Rapid Diagnosis of Lung Nodules/Mass

Patients with lung nodules/mass found by CT (computed tomography) or PET (positron emission tomography) who agree to receive lung resection are arranged to test the dielectric property bef...

The 4-SITE Field Following Study (4-SITE FF)

The purpose of this study is to evaluate and document appropriate clinical performance of the new 4-SITE Header / Lead interface in the TELIGEN 100 HE 4-SITE (VR and DR) implantable cardio...

Pure Red Cell Aplasia in Patients With Chronic Kidney Disease and in Use of Epoetin Alfa

The purpose of this study is to determine occurrence of pure red cell aplasia in a group of participants with chronic renal insufficiency and with resistance criteria to epoetin alfa treat...

Connected Catheter Clinical Feasibility Study

The objective of this study is to evaluate the safety and essential performance of the Connected Catheter System in males with neurogenic lower urinary tract dysfunction (NLUTD), both in a...

A Study to Observe Patients Who Have Developed a More Severe Form of Anemia (Pure Red Cell Aplasia) Which is Associated With the Erythropoietin Treatment for Their Original Anemia

The purpose of this study is to investigate a possible relationship between antibodies to recombinant erythropoietin and the clinical course of Pure Red Cell Anemia (PRCA) in patients curr...

Medical and Biotech [MESH] Definitions

An imaging technique using compounds labelled with short-lived positron-emitting radionuclides (such as carbon-11, nitrogen-13, oxygen-15 and fluorine-18) to measure cell metabolism. It has been useful in study of soft tissues such as CANCER; CARDIOVASCULAR SYSTEM; and brain. SINGLE-PHOTON EMISSION-COMPUTED TOMOGRAPHY is closely related to positron emission tomography, but uses isotopes with longer half-lives and resolution is lower.

The interdisciplinary science that studies evolutionary biology, including the origin and evolution of the major elements required for life, their processing in the interstellar medium and in protostellar systems. This field also includes the study of chemical evolution and the subsequent interactions between evolving biota and planetary evolution as well as the field of biology that deals with the study of extraterrestrial life.

Measurement of hearing based on the use of pure tones of various frequencies and intensities as auditory stimuli.

The mechanical property of material that determines its resistance to force. HARDNESS TESTS measure this property.

Field of study concerning MENTAL PROCESSES, LEARNING, and the brain regions associated with them.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Searches Linking to this Article