Sub-10 nm stable graphene quantum dots embedded in hexagonal boron nitride

Nanoscale
Dongxue ChenDapeng Yu

Abstract

Graphene quantum dots (GQDs), a zero-dimensional material system with distinct physical properties, have great potential in the applications of photonics, electronics, photovoltaics, and quantum information. In particular, GQDs are promising candidates for quantum computing. In principle, a sub-10 nm size is required for GQDs to present the intrinsic quantum properties. However, with such an extreme size, GQDs have predominant edges with lots of active dangling bonds and thus are not stable. Satisfying the demands of both quantum size and stability is therefore of great challenge in the design of GQDs. Herein we demonstrate the fabrication of sub-10 nm stable GQD arrays by embedding GQDs into large-bandgap hexagonal boron nitride (h-BN). With this method, the dangling bonds of GQDs were passivated by the surrounding h-BN lattice to ensure high stability, meanwhile maintaining their intrinsic quantum properties. The sub-10 nm nanopore array was first milled in h-BN using an advanced high-resolution helium ion microscope and then GQDs were directly grown in them through the chemical vapour deposition process. Stability analysis proved that the embedded GQDs show negligible property decay after baking at 100 °C in air for 100 days...Continue Reading

References

Mar 3, 2007·Nature Materials·A K Geim, K S Novoselov
Apr 19, 2008·Science·L A PonomarenkoA K Geim
Oct 15, 2008·Physical Review Letters·Pekka KoskinenHannu Häkkinen
Mar 18, 2009·Nano Letters·C CasiraghiA C Ferrari
Mar 28, 2009·Science·Caglar O GiritA Zettl
Mar 6, 2010·Nature·T D LaddJ L O'Brien
Mar 11, 2010·Advanced Materials·Goki EdaManish Chhowalla
Sep 21, 2010·Nature Nanotechnology·Silvano De FranceschiWolfgang Wernsdorfer
Dec 17, 2010·Nature·Kazu Suenaga, Masanori Koshino
Jun 10, 2011·Journal of the American Chemical Society·Vinay GuptaSuresh Chand
Jan 6, 2012·Nano Letters·Juan PengPulickel M Ajayan
May 29, 2012·Nature Nanotechnology·Dong Ick SonWon Kook Choi
Jan 29, 2013·Nature Nanotechnology·Zheng LiuPulickel M Ajayan
Mar 21, 2013·Nature Chemistry·Manish ChhowallaHua Zhang
Apr 25, 2013·Nature Communications·Christian VolkChristoph Stampfer
May 15, 2013·Nature Nanotechnology·M R ConnollyT J B M Janssen
Nov 2, 2013·Nature Communications·Kwanpyo KimA Zettl
Dec 7, 2013·Nature Communications·Ruquan YeJames M Tour
Feb 21, 2014·Nature Materials·Xinzheng LanEdward H Sargent
Aug 12, 2014·Nature Communications·Jiechao GeXiaodong Han
Nov 12, 2014·Proceedings of the National Academy of Sciences of the United States of America·Lei LiuGong Gu
Dec 1, 2015·Small·Zheng LiuKazu Suenaga
Jan 5, 2016·Nature Nanotechnology·Abdel El FatimyPaola Barbara
Jul 30, 2016·Science·K S NovoselovA H Castro Neto
Mar 10, 2017·Nature Communications·Lingxiu ChenMianheng Jiang
Mar 8, 2018·Chemical Society Reviews·Xiaozhi XuKaihui Liu
Mar 21, 2018·Nature Nanotechnology·Nils M FreitagMarkus Morgenstern
Jun 13, 2018·Journal of Colloid and Interface Science·Yi LuoLiang Wang
Jul 11, 2018·Nature Nanotechnology·Donghoon KimHan Seok Ko
Aug 3, 2018·Chemical Society Reviews·Hua ZhangPeide Ye

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Methods Mentioned

BETA
transmission electron microscopy
electron diffraction
Helium ion microscopy

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