Planar and van der Waals heterostructures for vertical tunnelling single electron transistors

Kim, Gwangwoo; Kim, Sung Soo; Jeon, Jonghyuk; Yoon, Seong In; Hong, Seokmo; Cho, Young Jin; Misra, Abhishek; Ozdemir, Servet; Yin, Jun; Ghazaryan, Davit; Holwill, Matthew; Mishchenko, Artem; Andreeva, Daria V.; Kim, Yong-Jin; Jeong, Hu Young; Jang, A‐Rang; Chung, Hyun‐Jong; Geǐm, A. K.; Novoselov, Kostya S.; Sohn, Byeong‐Hyeok; Shin, Hyeon Suk

doi:10.1038/s41467-018-08227-1

Cited by 49 publications

(40 citation statements)

References 42 publications

(43 reference statements)

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“…In order to increase the amount of interface per unit area for improved PL intensity, we prepare in-plane heterostructures of graphene quantum dots in a h-BN monolayer by a spatially controlled conversion on Pt nanoparticles (Pt NPs) prepared with the aid of self-patterning diblock copolymer micelles 16 (GQD/h-BN, Fig. 2a, b ).…”

Section: Resultsmentioning

confidence: 99%

Blue emission at atomically sharp 1D heterojunctions between graphene and h-BN

et al. 2020

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Atomically sharp heterojunctions in lateral two-dimensional heterostructures can provide the narrowest one-dimensional functionalities driven by unusual interfacial electronic states. For instance, the highly controlled growth of patchworks of graphene and hexagonal boron nitride (h-BN) would be a potential platform to explore unknown electronic, thermal, spin or optoelectronic property. However, to date, the possible emergence of physical properties and functionalities monitored by the interfaces between metallic graphene and insulating h-BN remains largely unexplored. Here, we demonstrate a blue emitting atomic-resolved heterojunction between graphene and h-BN. Such emission is tentatively attributed to localized energy states formed at the disordered boundaries of h-BN and graphene. The weak blue emission at the heterojunctions in simple in-plane heterostructures of h-BN and graphene can be enhanced by increasing the density of the interface in graphene quantum dots array embedded in the h-BN monolayer. This work suggests that the narrowest, atomically resolved heterojunctions of in-plane two-dimensional heterostructures provides a future playground for optoelectronics.

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Section: Resultsmentioning

confidence: 99%

Blue emission at atomically sharp 1D heterojunctions between graphene and h-BN

et al. 2020

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“… (J) Schematic formation of multi-channel single-electron tunneling transistors based on the GQDs array with graphene electrodes and h-BN tunneling barriers. Reprinted with permission from ( Kim et al., 2019 ). Copyright 2019 Nature Publishing Group.…”

Section: Lateral Heterostructure Of Boron Nitride With Graphenementioning

confidence: 99%

“…Apart from the patterned regrowth approach, patterned h-BN/graphene lateral heterostructures can also be produced using a spatially controlled conversion from h-BN to graphene (or graphene to h-BN) without the need of an etching process ( Gao et al., 2015 ; Gong et al., 2014 ; Kim et al., 2015a ). Recently, lateral heterostructures composed of graphene quantum dots (GQDs) embedded in h-BN have also been developed by this catalytic conversion approach on Pt substrates ( Kim et al., 2019 ). Figure 7 H shows the schematic for converting h-BN to graphene on the surface of Pt NPs.…”

Section: Lateral Heterostructure Of Boron Nitride With Graphenementioning

confidence: 99%

Direct growth of hexagonal boron nitride on non-metallic substrates and its heterostructures with graphene

et al. 2021

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“…In 2019, Kim G.W. et al [107] conducted research on the development of nextgeneration transistors for new technologies of ultra-fine semiconductor (graphene quantum dots). Graphene is a layer of atoms in which carbon atoms are connected in a hexagonal honeycomb shape.…”

Section: Doctor Bladementioning

confidence: 99%

A Review of Nanomaterial Based Scintillators

et al. 2021

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Recently, nanomaterial-based scintillators are newly emerging technologies for many research fields, including medical imaging, nuclear security, nuclear decommissioning, and astronomical applications, among others. To date, scintillators have played pivotal roles in the development of modern science and technology. Among them, plastic scintillators have a low atomic number and are mainly used for beta-ray measurements owing to their low density, but these types of scintillators can be manufactured not in large sizes but also in various forms with distinct properties and characteristics. However, the plastic scintillator is mainly composed of C, H, O and N, implying that the probability of a photoelectric effect is low. In a gamma-ray nuclide analysis, they are used for time-related measurements given their short luminescence decay times. Generally, inorganic scintillators have relatively good scintillation efficiency rates and resolutions. And there are thus widely used in gamma-ray spectroscopy. Therefore, developing a plastic scintillator with performance capabilities similar to those of an inorganic scintillator would mean that it could be used for detection and monitoring at radiological sites. Many studies have reported improved performance outcomes of plastic scintillators based on nanomaterials, exhibiting high-performance plastic scintillators or flexible film scintillators using graphene, perovskite, and 2D materials. Furthermore, numerous fabrication methods that improve the performance through the doping of nanomaterials on the surface have been introduced. Herein, we provide an in-depth review of the findings pertaining to nanomaterial-based scintillators to gain a better understanding of radiological detection technological applications.

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Planar and van der Waals heterostructures for vertical tunnelling single electron transistors

Cited by 49 publications

References 42 publications

Blue emission at atomically sharp 1D heterojunctions between graphene and h-BN

Blue emission at atomically sharp 1D heterojunctions between graphene and h-BN

Direct growth of hexagonal boron nitride on non-metallic substrates and its heterostructures with graphene

A Review of Nanomaterial Based Scintillators

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