Intercalation and hybrid heterostructure integration of two-dimensional atomic crystals with functional organic semiconductor molecules  

作　　者：Wen He Han Zang Songhua Cai Zhangyan Mu Cheng Liu Mengning Ding Peng Wang Xinran Wang 

机构地区：[1]Key Laboratory of Mesoscopic Chemistry,School of Chemistry and Chemical Engineering,Nanjing University,Nanjing,210093,China [2]National Laboratory of Solid State Microstructures,Nanjing University,Nanjing,210093,China [3]School of Electronic Science and Engineering and Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing,210093,China [4]Jiangsu Key Laboratory of Artificial Functional Materials,College of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing,210093,China [5]Department of Applied Physics,The Hong Kong Polytechnic University,Hung Hom,999077,Kowloon,Hong Kong,China [6]Research Center for Environmental Nanotechnology(ReCENT),Nanjing University,Nanjing,210023,China

出　　处：《Nano Research》2020年第11期2917-2924,共8页纳米研究（英文版）

基　　金：support by the Fundamental Research Funds for the Central Universities in China(No.020514380224);Natural Science Foundation of Jiangsu Province(No.BK20180321);instrument/technical support from State Key Lab of Analytical Chemistry for Life Science,and State Key Lab of Coordination Chemistry.P.W.and S.C acknowledge funding from the National Natural Science Foundation of China(No.11874199);the National Basic Research Program of China,(No.2015CB654901);support by the National Natural Science Foundation of China(Nos.61734003,61521001,51861145202,61861166001,and 61851401);the National Key Basic Research Program of China(No.2015CB921600);Strategic Priority Research Program of Chinese Academy of Sciences XDB 30000000,Key Laboratory of Advanced Photonic and Electronic Materials,Collaborative Innovation Center of Solid-State Lighting and Energy-Saving Electronics,and the Fundamental Research Funds for the Central Universities,China.S.H.C.acknowledges the support by the Program A for Outstanding PhD candidate of Nanjing University(No.201801A013);Postgraduate Research&Practice Innovation Program of Jiangsu Province(No.KYCX18_0045).

摘　　要：Van der Waals(vdW)integration affords semiconductor heterostructures without constrains of lattice matching and opens up a new realm of functional devices by design.A particularly interesting approach is the electrochemical intercalation of two-dimensional(2D)atomic crystal and formation of superlattices,which can provide scalable production of novel vdW heterostructures.However,this approach has been limited to the use of organic cations with non-functional aliphatic chains,therefore failed to take the advantage of the vast potentials in molecular functionalities(electronic,photonic,magnetic,etc.).Here we report the integration of 2D crystal(MoS_(2),WS_(2),highly oriented pyrolytic graphite(HOPG),WSe_(2) as model systems)with electrochemically inert organic molecules that possess semiconducting characteristics(including perylene-3,4,9,10-tetracarboxylic dianhydride(PTCDA),pentacene and fullerene),through on-chip electrochemical intercalation.An unprecedented long-range spatial feature of intercalation has been achieved,which allowed facile assembly of a vertical MoS_(2)-PTCDA-Si junction.The intercalated heterostructure shows significant modulation of the lateral transport,and leads to a molecular tunneling characteristic at the vertical direction.The general intercalation of charge neutral and functional molecules defines a versatile platform of inorganic/organic hybrid vdW heterostructures with significantly extended molecular functional building blocks,holding great promise in future design of nano/quantum devices.

关 键 词：transition metal dichalcogenide electrochemical intercalation perylene-3 4 9 10-tetracarboxylic dianhydride(PTCDA) organic semiconductor inorganic/organic heterostructure 

分 类 号：O62[理学—有机化学]