Fabrication and chemical modification of carbon nanodots/monolayer hexagonal boron nitride/substrate heterostructures and their terahertz optoelectronic properties

被引:4
|
作者
Wen, Hua [1 ,2 ]
Wang, Boyang [3 ]
Cheng, Xingjia [1 ,2 ]
Song, Dan [4 ]
Xiao, Huan [5 ,6 ]
Xu, Wen [1 ,5 ,6 ,7 ]
Lu, Siyu [1 ,3 ]
机构
[1] Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, HFIPS, Hefei 230031, Peoples R China
[2] Univ Sci & Technol China, Hefei 230026, Peoples R China
[3] Zhengzhou Univ, Coll Chem, Green Catalysis Ctr, Zhengzhou 450000, Peoples R China
[4] Chongqing Med Univ, Coll Biomed Engn, Key Lab Ultrasound Med & Engn, Chongqing 400010, Peoples R China
[5] Yunnan Univ, Sch Phys & Astron, Kunming 650091, Peoples R China
[6] Yunnan Univ, Yunnan Key Lab Quantum Informat, Kunming 650091, Peoples R China
[7] Micro Opt Instruments Inc, Shenzhen 518118, Peoples R China
基金
中国国家自然科学基金;
关键词
Carbon nanodots; Chemical modification; Monolayer hexagonal boron nitride; Van der Waals heterostructure; Terahertz optoelectronic properties; GRAPHENE QUANTUM DOTS; PHOTOLUMINESCENCE MECHANISM; DEEP-ULTRAVIOLET; EMISSION; NITRIDE; RED; PHOTORESPONSE; FLUORESCENCE; SINGLE; STATE;
D O I
10.1016/j.apsusc.2023.157441
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Carbon nanodots (CNDs) can be potentially applied in optoelectronic devices such as full-color display and LED. In this study we fabricate, for the first time, CNDs/monolayer hexagonal boron nitride (ML-hBN)/sapphire heterostructures, where i) ML-hBN is compatible with both CNDs and sapphire due to the presence of the van der Waals (vdW) forces between ML-hBN and these materials and ii) the CNDs can be chemically modified by attaching chemical bonds and/or functional groups on the surface/edges of the carbon-cores of CNDs. The basic physical and chemical properties of CNDs and the heterostructures are characterized. We further apply terahertz time-domain spectroscopy to measure the optical conductivity of CNDs/ML-hBN vdW heterostructures and to determine optically the key physical parameters of these heterostructures. The temperature dependence of these parameters is examined. We find that the agglomeration of dried CNDs on sapphire substrate can be largely suppressed by the presence of ML-hBN and the electronic and optoelectronic properties of the heterostructure can be controlled and modulated by chemical modification on CNDs. The results obtained from this study can be helpful for the fabrication, integration and modulation of CND based vdW heterostructures for practical device applications.
引用
收藏
页数:10
相关论文
共 50 条
  • [41] Spintronic and electronic properties of a positively charged NBVN center in hexagonal boron nitride monolayer
    Zhang, Y. G.
    Cheng, G. D.
    Peng, W.
    Tang, Z.
    COMPUTATIONAL MATERIALS SCIENCE, 2014, 95 : 316 - 319
  • [42] Dielectric properties of hexagonal boron nitride and transition metal dichalcogenides: from monolayer to bulk
    Akash Laturia
    Maarten L. Van de Put
    William G. Vandenberghe
    npj 2D Materials and Applications, 2
  • [43] Probing Electronic Properties of CVD Monolayer Hexagonal Boron Nitride by an Atomic Force Microscope
    Deng, Shiyu
    Gu, Yanyun
    Wan, Xi
    Gao, Mingliang
    Xu, Shijia
    Chen, Kun
    Chen, Huanjun
    FRONTIERS IN MATERIALS, 2021, 8
  • [44] Dielectric properties of hexagonal boron nitride and transition metal dichalcogenides: from monolayer to bulk
    Laturia, Akash
    Van de Put, Maarten L.
    Vandenberghe, William G.
    NPJ 2D MATERIALS AND APPLICATIONS, 2018, 2
  • [45] Stability and electronic properties of hexagonal boron nitride monolayer with irregular graphene domains embedded
    Ni, Meiyan
    Wang, Yancong
    Yang, Qiang
    Zhu, Weiqi
    Tang, Qiong
    Li, Zhongjun
    MODERN PHYSICS LETTERS B, 2014, 28 (18):
  • [46] Geometrical and magnetic properties of small titanium and chromium clusters on monolayer hexagonal boron nitride
    Hao, Dong
    Wang, Yueyi
    Tang, Xiangqian
    Zhao, Xinjia
    An, Yang
    Wang, Wenyu
    Li, Jianmei
    Shan, Xinyan
    Lu, Xinghua
    PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2023, 25 (08) : 6079 - 6088
  • [47] Shape- and size dependent piezoelectric properties of monolayer hexagonal boron nitride nanosheets
    Nan, Yang
    Tan, Dan
    Zhao, Junqi
    Willatzen, Morten
    Wang, Zhong Lin
    NANOSCALE ADVANCES, 2020, 2 (01): : 470 - 477
  • [48] Tailoring the thermal transport properties of monolayer hexagonal boron nitride by grain size engineering
    Ying, Hao
    Moore, Arden
    Cui, Jie
    Liu, Yaoyao
    Li, Deshuai
    Han, Shuo
    Yao, Yuan
    Wang, Zhiwei
    Wang, Lei
    Chen, Shanshan
    2D MATERIALS, 2020, 7 (01)
  • [49] Substrate-induced changes in the magnetic and electronic properties of hexagonal boron nitride
    Joshi, Niharika
    Ghosh, Prasenjit
    PHYSICAL REVIEW B, 2013, 87 (23)
  • [50] Chemical Vapor Deposition and Etching of High-Quality Monolayer Hexagonal Boron Nitride Films
    Sutter, Peter
    Lahiri, Jayeeta
    Albrecht, Peter
    Sutter, Eli
    ACS NANO, 2011, 5 (09) : 7303 - 7309