基于原子取代的应变工程实现二维MoS_(2)材料的极限应变

作     者：刘开朗 陈翔 巩朋来 余若瀚 吴劲松 李亮 韩伟 杨三军 张晨栋 邓京昊 李奥炬 张庆福 诸葛福伟 翟天佑 Kailang Liu;Xiang Chen;Penglai Gong;Ruohan Yu;Jinsong Wu;Liang Li;Wei Han;Sanjun Yang;Chendong Zhang;Jinghao Deng;Aoju Li;Qingfu Zhang;Fuwei Zhuge;Tianyou Zhai

作者机构：State Key Laboratory of Materials Processing and Die&Mould TechnologySchool of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China Nano and Heterogeneous Materials CenterSchool of Materials Science and EngineeringNanjing University of Science and TechnologyNanjing 210094China Department of PhysicsSouthern University of Science and TechnologyShenzhen 518055China State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingNanostructure Research CenterWuhan University of TechnologyWuhan 430070China Institutes of Physical Science and Information TechnologyAnhui UniversityHefei 231699China School of Physics and TechnologyWuhan UniversityWuhan 430072China 

出 版 物：《Science Bulletin》 (科学通报（英文版）)

年 卷 期：2022年第67卷第1期

页      面：45-53,M0004页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(21825103,52001165) Natural Science Foundation of Hubei Province(2019CFA002) Natural Science Foundation of Jiangsu Province(BK20200475) the Fundamental Research Funds for the Central Universities(2019kfy XMBZ018,30921011215) supports from Analytical and Testing Center in Huazhong University of Science and Technology as well as Nanostructure Research Center(NRC)supported by the Fundamental Research Funds for the Central Universities(WUT:2019III012GX,2020III002GX)。 

主　　题：二维材料 硫化温度 取代反应 极限应变 晶格结构 应变量 物理化学性质 应变极限 

摘      要：应变工程被广泛用于调控材料的物理化学性质.二维材料能承载极高的应变,因而有望通过应变工程实现其性质的有效调控.然而,如何在二维材料中引入应变仍是目前亟待解决的关键问题.本文用一种在二维材料内进行原子取代的方法来产生均匀有效的应变.通过对MoTe_(2)进行可控硫化,可在保留晶格结构的同时实现S原子对Te原子的取代反应,最终制备应变量高达10%的MoS_(2),接近其应变极限.通过改变硫化温度即可实现应变的连续宽幅的调节,进而实现其带隙的调控.该策略为应变工程在二维材料中的应用铺平了道路,有望被用于制备基于应变二维材料的高性能器件.