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Vertical graphene nanosheets (VGNs) are the material of choice for next-generation electronic device applications. The growing demand for flexible devices in electronic industry brings in restriction on growth temperature of the material of…

材料科学 · 物理学 2022-02-02 Gopinath Sahoo , Subrata Ghosh , S. R. Polaki , Tom Mathews , M. Kamruddin

The practical difficulties to use graphene in microelectronics and optoelectronics is that the available methods to grow graphene are not easily integrated in the mainstream technologies. A growth method that could overcome at least some of…

We have investigated the effect of nitrogen (N2) as a carrier gas on the growth of vertical graphene nanosheets (VGN) by plasma enhanced chemical vapor deposition (PECVD). It is demonstrated that addition of nitrogen gas with a hydrocarbon…

应用物理 · 物理学 2022-06-24 Subrata Ghosh , S. R. Polaki , Nanda Gopala Krishna , M. Kamruddin

Germanium is emerging as the substrate of choice for the growth of graphene in CMOS-compatible processes. For future application in next generation devices the accurate control over the properties of high-quality graphene synthesized on Ge…

材料科学 · 物理学 2018-05-04 A. M. Scaparro , V. Miseikis , C. Coletti , A. Notargiacomo , M. Pea , M. De Seta , L. Di Gaspare

Multilayer graphene (MLG) films were grown by chemical vapour deposition (CVD) on molybdenum carbide ($MoC_{x}$) substrates. We fabricated the catalytic $MoC_{x}$ films by plasma enhanced atomic layer deposition (PEALD). The mechanism of…

应用物理 · 物理学 2020-01-01 Eldad Grady , Chenhui Li , Oded Raz , W. M. M. Kessels , Ageeth A. Bol

Herein, an effort has given to sheds light on the effects of plasma process parameters on the growth of vertical graphene nanosheets (VGNs) by plasma enhanced chemical vapor deposition (PECVD. The parameters include substrate temperature,…

材料科学 · 物理学 2022-02-02 Subrata Ghosh , K. Ganesan , S. R. Polaki , M. Kamruddin

Graphene nanoribbons (GNRs) are considered one of the most promising materials for next generation electronics, however a reliable and controllable synthesis method is still lacking. Here, we report the CVD growth of GNRs on a copper…

介观与纳米尺度物理 · 物理学 2022-01-04 Haibin Sun , Fengning Liu , Leining Zhang , Ben McLean , Hao An , Ming Huang , Marc-Georg Willinger , Rodney Ruoff , Zhujun Wang , Feng Ding

The integration of graphene (Gr) with nitride semiconductors is highly interesting for applications in high-power/high-frequency electronics and optoelectronics. In this work, we demonstrated the direct growth of Gr on Al0.5Ga0.5N/sapphire…

Raman spectroscopy, a fast and nondestructive imaging method, can be used to monitor the doping level in graphene devices. We fabricated chemical vapor deposition (CVD) grown graphene on atomically flat hexagonal boron nitride (hBN) flakes…

材料科学 · 物理学 2013-12-09 Kanokporn Chattrakun , Shengqiang Huang , K. Watanabe , T. Taniguchi , A. Sandhu , B. J. LeRoy

Vertical Graphene Nano sheets (VGN) have become promising candidates for a wide range of applications due to their unique architecture and remarkable properties. However, utilization of VGN in potential applications relies on their…

应用物理 · 物理学 2022-06-24 Subrata Ghosh , S. R. Polaki , Aji Kumar , Nanda Gopala Krishna , M. Kamruddin

Nanographitic structures (NGSs) with multitude of morphological features are grown on SiO2/Si substrates by electron cyclotron resonance - plasma enhanced chemical vapor deposition (ECR-PECVD). CH4 is used as source gas with Ar and H2 as…

Applying time-dependent photoemission we unravel the graphene growth process on a metallic surface by chemical vapor deposition (CVD). Graphene CVD growth is in stark contrast to the standard growth process of two--dimensional films because…

材料科学 · 物理学 2015-05-13 Alexander Grüneis , Kurt Kummer , Denis V. Vyalikh

Vertical graphene nanosheets (VGN) grown as controlled porous network are studied and demonstrated as a promising electrode material for supercapacitors. The VGN synthesized by microwave plasma enhanced chemical vapor deposition using…

材料科学 · 物理学 2022-02-02 Subrata Ghosh , Bhavana Gupta , Tom Mathews , A. Das , M. Kamruddin

A bottom-up chemical vapor deposition (CVD) process for the growth of graphene nanomesh films is demonstrated. The process relies on silicon nanospheres to block nucleation sites for graphene CVD on copper substrates. These spheres are…

材料科学 · 物理学 2016-09-16 Matthias König , Günther Ruhl , Joerg-Martin Batke , Max C. Lemme

Carbon nanowall (CNW) is a two dimensional graphitic nanostructures with many potential applications like field emission, catalyst support for fuel cell and negative electrode for batteries. CNWs were grown here on Si substrates by plasma…

介观与纳米尺度物理 · 物理学 2018-04-20 R. Kar , N. N. Patel , S. Sinha

The combination of the exciting properties of graphene with those of monolayer tungsten disulfide (WS2) makes this heterostack of great interest for electronic, optoelectronic and spintronic applications. The scalable synthesis of…

Recently, hexagonal boron nitride (h-BN) has been shown to act as an ideal substrate to graphene by greatly improving the material transport properties thanks to its atomically flat surface, low interlayer electronic coupling and almost…

Nanometer-scale graphene objects are attracting much research interest because of newly emerging properties originating from quantum confinement effects. We present Raman spectroscopy studies of graphene nanoribbons (GNRs) which are known…

材料科学 · 物理学 2012-01-23 Sunmin Ryu , Janina Maultzsch , Melinda Y. Han , Philip Kim , Louis E. Brus

One of the ways to use graphene in field effect transistors is to introduce a band gap by quantum confinement effect [1]. That is why narrow graphene nanoribbons (GNRs) with width less than 50nm are considered to be essential components in…

It is significant to prepare large area of high quality graphene for the study of the characteristics of graphene and the research of the nano-devices based on graphene. This paper summarizes the experiment progresses and mechanism of…

介观与纳米尺度物理 · 物理学 2012-03-01 Tian Yuan , Zhao Qian-Ying , Hu Jing , Zhou Chen , Miao Ling , Jiang Jian-Jun
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