刘洪涛   博士

教育及科研经历
  • 2016年4月-至今    中国科学院物理研究所，博士后
    合作导师：高鸿钧  院士
    研究方向：新型二维过渡金属硫属化合物的CVD制备与输运性质研究
     
  • 2014年1月-2016年3月     中国科学院化学研究所
    所在课题组：刘云圻院士组
    研究方向：二维材料的制备与光电器件研究
     
  • 2007年9月-2014年1月     中国科学院化学研究所，博士，专业：有机化学
    导师：朱道本  院士，刘云圻  院士
    论文题目：氧化石墨烯的还原、修饰及其电学性能调控
     
  • 2003年9月-2007年7月     青岛大学，学士，专业：应用化学
     
    研究兴趣
  • 二维/低维纳米材料的制备（CVD生长及溶液法）、掺杂、表征、器件制备与输运性质研究
  • 低维纳米材料/有机半导体的（柔性）分子电子学、光电器件、场效应晶体管和传感器等
  • 低维纳米材料结构与性能关系的研究
     
    主要技能
  • 二维纳米材料的CVD生长（石墨烯、VSe2、VTe2、MoS2、WSe2等）
  • 熟悉二维纳米材料器件的微加工制作与表征（如场效应晶体管、霍尔器件等）
  • 熟练使用常见的测试仪器（如半导体测试仪Keithley 4200、PPMS等）
  • 熟悉超净间内工作及常见的微纳加工工艺（如EBL、电子束蒸镀等）
  • 氧化石墨烯的溶液法合成、化学修饰及还原
     
    研究经历
  1. 低温合成超薄VSe2纳米片，并首次观测到弱反局域化效应，实验上证实其存在本征的自旋-轨道耦合作用
    有望应用于自旋电子学与谷电子学的、具有本征磁性的二维材料是最近的研究热点。理论计算表明单层VX2，(X = S, Se, Te)，具有本征铁磁性。为制备超薄的VSe2，研究其新奇的物理特性，我们发展了一种升华盐辅助的、生长少层VSe2的方法。在同类方法中，我们的方法生长温度更低（400 ℃），获得的样品厚度更薄（2.48 nm）。由于量子限域效应，在超薄VSe2中观测到量子相干输运——弱反局域化效应，并用ILP理论进行了很好的拟合。本工作证实了其存在本征的自旋-轨道耦合作用，为其自旋及谷电子学的研究提供了实验依据。升华盐辅助的CVD生长方法也可用于其它二维过渡金属硫属化合物的低温合成（WSe2、VS2和VTe2等），同时避免盐的污染，从而获得高质量的二维材料，为新奇物性的研究提供了基础。

    文章准备投稿Nature Communications
     
  2. 高电导率还原氧化石墨烯的制备与柔性导电应用
    氧化石墨烯具有低成本、易批量制备等优点，但其导电性差，需要寻找合适的还原方法获得高电导率的还原氧化石墨烯。为此，我们发展了一种新的还原剂（劳氏试剂，LR），可简单有效地原位还原氧化石墨烯薄膜/单片。在较低的反应温度（110℃）获得高电导率、高迁移率的还原氧化石墨烯（GOLR）薄膜。高电导率的GOLR可用作有机场效应晶体管的电极和柔性导电材料。工作发表后被评为“2013 Most Accessed Manuscripts for Journal of Materials Chemistry C”。SCI他引80次。
    TOC副本
    J. Mater. Chem. C 1, 3104-3109 (2013). DOI: 10.1039/C3TC00067B
     
  3. 特定类型氮掺杂石墨烯的制备与场效应晶体管的精细调控
    杂原子掺杂的石墨烯在其电子学和催化领域具有非常重要的作用。但氮掺杂的石墨烯一般为多种类型氮掺杂的混合体（吡咯型、吡啶型及石墨型等）。特定类型氮原子掺杂的石墨烯难以制备，并阻碍了特定类型氮原子对石墨烯物性影响的研究。我们通过希弗碱反应低温溶液法合成了吡嗪类氮和吡啶类氮掺杂的还原氧化石墨烯。通过改变修饰分子中氮原子的类型和调控分子的吸电子能力，实现了石墨烯的不同的掺杂效果：弱的n型、本征双极性及弱的p型。证明了特定类型氮对石墨烯场效应行为的影响。
    N doped graphene by OPD,23DAP,BTFMOPD
     
  4. OTS自组装单分子层钝化的空气中稳定的本征双极性石墨烯场效应管
    石墨烯具有双极性的场效应特性。但在大气环境中测试时，受水氧等的掺杂，石墨烯场效应管只表现出p型场效应。为消除空气中水氧对石墨烯场效应的影响，我们设计了一种新的器件结构，使石墨烯置于十八烷基三氯硅烷（OTS）自组装分子层之间，构成了石墨烯-分子异质节，可在空气中检测到石墨烯的本征的双极性场效应行为，不需要高真空等苛刻的环境，简单有效且比较可靠。
    未标题-2
     
发表文章
发表论文30篇，被引2583次，单篇最高SCI他引739次，专著2部。
  1. Hongtao Liu, Lihong Bao, Bingyu Che, Ruizi Zhang, Zhang Zhou, Ce Bian, Ruisong Ma, Liangmei Wu, Cheng-Min Shen, Shixuan Du, Hong-Jun Gao, “Sublimed-Salt Assisted CVD Growth of High-Quality VSe2: Thickness-Dependent Transport and Intrinsic Spin-Orbit Coupling Induced Weak Antilocalization”, to be submitted to Nature Communications
     
  2. Hongtao Liu, Panpan Zhang, Lihong Bao, Ruizi Zhang, Zhang Zhou, Ce Bian, Cheng-Min Shen, Hai-Tao Yang, Shixuan Du, Hong-Jun Gao “Weaklocalization effect in sublimed-salt assisted CVD grown high quality VTe2”, to be submitted to Advanced Materials
     
  3. Hongtao Liu, Lei Zhang, Yunlong Guo, Cheng Cheng, Lianjiang Yang, Lang Jiang, Gui Yu, Wenping Hu, Yunqi Liu and Daoben Zhu, “Reduction of graphene oxide to highly conductive graphene by Lawesson's reagent and its electrical applications”, J. Mater. Chem. C 1, 3104-3109 (2013). DOI: 10.1039/C3TC00067B. SCI他引80次
     
  4. Hongtao Liu, Yunqi Liu and Daoben Zhu, “Chemical doping of graphene”, J. Mater. Chem. 21, 3335-3345 (2011). DOI: 10.1039/C0JM02922J, (review article，封面文章），SCI他引739次
     
  5. Hanlin Wang#, Hongtao Liu#, Qiang Zhao#, Zhenjie Ni, Ye Zou, Jie Yang, Lifeng Wang, Yanqiu Sun, Yunlong Guo, Wenping Hu, Yunqi Liu, “A Retina‐Like Dual Band Organic Photosensor Array for Filter‐Free Near‐Infrared‐to‐Memory Operations”, Adv. Mater. 29 1701772 (2017). DOI: 10.1002/adma.201701772，#共同一作
     
  6. Lifeng Wang, Bin Wu, Hongtao Liu, Li Huang, Yongtao Li, Wei Guo, Xin Chen, Peng Peng, Lei Fu, Yunchang Yang, PingAn Hu, Yunqi Liu, “Water-assisted growth of large-sized single crystal hexagonal boron nitride grains” Mater. Chem. Front., 2017, 1, 1836–1840 (2017). DOI: 10.1039/C7QM00100B
     
  7. Yunzhou Xue, Yupeng Zhang, Yan Liu, Hongtao Liu, Jingchao Song, Joice Sophia, Jingying Liu, Zaiquan Xu, Qingyang Xu, Ziyu Wang, Jialu Zheng, Yunqi Liu, Shaojuan Li, and Qiaoliang Bao, “Scalable Production of a Few-Layer MoS2/WS2 Vertical Heterojunction Array and Its Application for Photodetectors”, ACS Nano 10, 573–580 (2016). DOI: 10.1021/acsnano.5b05596
     
  8. Hanlin Wang, Hongtao Liu, Qiang Zhao, Cheng Cheng, Wenping Hu and Yunqi Liu, “Three-component Integrated Ultrathin Organic Photosensors for Plastic Optoelectronics”, Adv. Mater. 28, 624–630 (2016). DOI: 10.1002/adma.201503953
     
  9. Yunzhou Xue, Bin Wu, Hongtao Liu, Jiahui Tan, Wenping Hu and Yunqi Liu, “Direct synthesis of phosphorus and nitrogen co-doped monolayer graphene with air-stable n-type characteristics”, Phys. Chem. Chem. Phys., 16, 20392–20397 (2014). DOI: 10.1039/C4CP02935F
     
  10. Hanlin Wang, Cheng Cheng, Lei Zhang, Hongtao Liu, Yan Zhao, Yunlong Guo, Wenping Hu, Gui Yu and Yunqi Liu, “Inkjet Printing Short-Channel Polymer Transistors with High-Performance and Ultrahigh Photoresponsivity”, Adv. Mater. 26, 4683–4689 (2014). DOI: 10.1002/adma.201400697
     
  11. Birong Luo, Bingyan Chen, Lan Meng, Dechao Geng, Hongtao Liu, Jie Xu, Zhiyong Zhang, Hantang Zhang, Lianmao Peng, Lin He, Wenping Hu, Yunqi Liu and Gui Yu, “Layer-Stacking Growth and Electrical Transport of Hierarchical Graphene Architectures”, Adv. Mater. 26, 3218–3224 (2014). DOI: 10.1002/adma.201305627
     
  12. Jianyi Chen, Yunlong Guo, Liping Huang, Yunzhou Xue, Dechao Geng, Hongtao Liu, Bin Wu, Gui Yu, Wenping Hu, Yunqi Liu and Daoben Zhu, “Controllable fabrication of ultrathin free-standing graphene films”, Phil. Trans. R. Soc. A 372, 20130017 (2014). DOI: 10.1098/rsta.2013.0017
     
  13. Lifeng Wang, Bin Wu, Jisi Chen, Hongtao Liu, Pingan Hu and Yunqi Liu, “Monolayer Hexagonal Boron Nitride Films with Large Domain Size and Clean Interface for Enhancing the Mobility of Graphene-Based Field-Effect Transistors”, Adv. Mater. 26, 1559–1564 (2014). DOI: 10.1002/adma.201304937
     
  14. Lili Jiang, Bin Wu, Hongtao Liu, Yuan Huang, Jianyi Chen, Dechao Geng, Hongjun Gao and Yunqi Liu, “A general approach for fast detection of charge carrier type and conductivity difference in nanoscale materials”, Adv. Mater. 25, 7015-7019 (2013). DOI: 10.1002/adma.201302941
     
  15. Birong Luo, Hongtao Liu, Lili Jiang, Lang Jiang, Dechao Geng, Bin Wu, Wenping Hu, Yunqi Liu and Gui Yu, “Synthesis and morphology transformation of single-crystal graphene domains based on activated carbon dioxide by chemical vapor deposition”, J. Mater. Chem. C 1, 2990-2995 (2013). DOI: 10.1039/C3TC30124A
     
  16. Chunmeng Yu, Yunlong Guo, Hongtao Liu, Ni Yan, Zhiyan Xu, Gui Yu, Yu Fang and Yunqi Liu, “Ultrasensitive and selective sensing of heavy metal ions with modified graphene”, Chem. Commun. 49, 6492-6494 (2013). DOI: 10.1039/C3CC42377H
     
  17. Jian Zheng, Hong-Tao Liu, Bin Wu, Chong-An Di, Yun-Long Guo, Ti Wu, Gui Yu, Yun-Qi Liu and Dao-Ben Zhu, “Production of graphite chloride and bromide using microwave sparks”, Sci. Rep. 2, 662 (2012). DOI: 10.1038/srep00662
     
  18. Lei Zhang, Hongtao Liu, Yan Zhao, Xiangnan Sun, Yugeng Wen, Yunlong Guo, Xike Gao, Chong-an Di, Gui Yu and Yunqi Liu, “Inkjet printing high-resolution, large-area graphene patterns by coffee-ring lithography”, Adv. Mater. 24, 436-440 (2012). DOI: 10.1002/adma.201103620
     
  19. Yunlong Guo, Bin Wu, Hongtao Liu, Yongqiang Ma, Ying Yang, Jian Zheng, Gui Yu and Yunqi Liu, “Electrical assembly and reduction of graphene oxide in a single solution step for use in flexible sensors”, Adv. Mater. 23, 4626–4630 (2011). DOI: 10.1002/adma.201103120
     
  20. Jian Zheng, Hongtao Liu, Bin Wu, Yunlong Guo, Ti Wu, Gui Yu, Yunqi Liu and Daoben Zhu, “Production of high-quality carbon nanoscrolls with microwave spark assistance in liquid nitrogen”, Adv. Mater. 23, 2460-2463 (2011). DOI: 10.1002/adma.201004759
     
  21. Jian Zheng, Hongtao Liu, Bin Wu, Yunlong Guo, Ti Wu, Gui Yu, Yunqi Liu and Daoben Zhu, “Production of graphene nanospheres by annealing of graphene oxide in solution”, Nano Res. 4, 705-711 (2011). DOI: 10.1007/s12274-011-0126-9
     
  22. Jian Zheng, Chong-an Di, Yunqi Liu, Hongtao Liu, Yunlong Guo, Chunyan Du, Ti Wu, Gui Yu and Daoben Zhu, “High quality graphene with large flakes exfoliated by oleyl amine”, Chem. Commun. 46, 5728-5730 (2010). DOI: 10.1039/C0CC00954G
     
  23. Yunlong Guo, Chong-an Di, Hongtao Liu, Jian Zheng, Lei Zhang, Gui Yu and Yunqi Liu, “General route toward patterning of graphene oxide by a combination of wettability modulation and spin-coating”, ACS Nano 4, 5749-5754 (2010). DOI: 10.1021/nn101463j
    图书章节
  24. Hongtao Liu and Yunqi Liu, “Controlled Chemical Synthesis in CVD Graphene” Physical Sciences Reviews, 2, 4, 20160107. (Eds. by Giamberini et al.,). DE GRUYTER (2017). ISSN (Online) 2365-659X, ISSN (Print) 2365-6581, DOI: 10.1515/psr-2016-0107
     
  25. 刘洪涛，刘云圻，“石墨烯”（第5章，页码：172−261），《有机纳米与分子器件（第2版）》（刘云圻等著）. 北京：科学出版社，（2015）. ISBN: 9787030418197
 
获得奖励
  • 2013年度化学所航天科技奖学金三等奖
  • 2012年度化学所郝氏碳纤维奖学金三等奖
  • 2011年度化学所所长奖学金二等奖
  • 2011年度化学所泰丰科技奖学金三等奖