Observation of ambipolar photoresponse from 2D MoS_(2)/MXene heterostructure

作     者：Juntong Zhu Hao Wang Liang Ma Guifu Zou Juntong Zhu;Hao Wang;Liang Ma;Guifu Zou

作者机构：College of EnergySoochow Institute for Energy and Materials Innovationsand Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu ProvinceSoochow UniversitySuzhou 215006China Research Institute of Superconductor ElectronicsNanjing UniversityNanjing 210023China School of Physical SciencesUniversity of Chinese Academy of SciencesBeijing 100190China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2021年第14卷第10期

页      面：3416-3422页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学] 

基　　金：the support from the National Natural Science Foundation of China(Nos.21971172 and 21671141) the Priority Academic Program Development(PAPD)of Jiangsu Higher Education Institutions for Optical Engineering in Soochow University,and Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering in Changzhou University(No.RC-ICRS/15-16/02(HKBU)) 

主　　题：MXene MoS_(2) two-dimensional heterostructure photodetector ambipolar photoresponse 

摘      要：Two-dimensional materials have been demonstrated as promising toolboxes for *** metal carbides and nitrides(MXenes),members of an emerging family of two-dimensional materials,have drawn extensive attention in optoelectronics owing to their excellent conductivity and tunable electronic ***,a photodetector based on the two-dimensional van der Waals heterostructure of Ti_(3)C_(2)T_(x)MXene and a MoS_(2)monolayer was constructed to observe the ambipolar photoresponse,which showed a positive photoresponse in the visible spectrum(500-700 nm)and a negative photoresponse at longer wavelengths(700-800 nm).The device exhibited a high negative responsivity of 1.9 A/W and a detectivity of 2.1×10^(10)Jones under 750 nm light *** experiments demonstrate that the negative photoresponse arises from the heterostructureinduced trap energy level,which confines the excited photoelectrons and leads to an inverse *** work demonstrates a unique optoelectronic phenomenon in MoS_(2)/MXene heterostructures and provides valuable insights into the development of new photodetection materials.