Epitaxial growth of borophene on graphene surface towards efficient and broadband photodetector  

作　　者：Zenghui Wu Chen Shifan Zitong Wu Yi Liu Wei Shao Xinchao Liang Chuang Hou Guoan Tai 

机构地区：[1]The State Key Laboratory of Mechanics and Control of Mechanical Structures and Laboratory of Intelligent Nano Materials and Devices of Ministry of Education,College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

出　　处：《Nano Research》2024年第4期3053-3060,共8页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.61774085);the Natural Science Foundation of Jiangsu Province(No.BK20201300);the Fundamental Research Funds for the Central Universities(No.NP2022401);the Fund of Prospective Layout of Scientific Research for NUAA(Nanjing University of Aeronautics and Astronautics)(No.ILA22009);the Priority Academic Program Development of Jiangsu Higher Education Institutions.

摘　　要：In-situ integration of multiple materials with well-defined interfaces as heterostructures is of great interest due to their unique properties and potential for new device functionality.Because of its polymorphism and diverse bonding geometries,borophene is a promising candidate for two-dimensional heterostructures,but suitable synthesis conditions have limited its potential applications.Toward this end,we demonstrate the vertical borophene and graphene heterostructures which form by epitaxial growth of borophene onto multilayer graphene on Cu substrates via chemical vapor deposition,where hydrogen and NaBH_(4) are respectively used as the carrier gas and the boron source.The lattice structure of the as-synthesized borophene well coincides with the predictedα′-boron sheet.The borophene-based photodetector shows an excellent broadband photoresponse from the ultraviolet(255 nm)to the infrared(940 nm)wavelengths,with enhanced responsivity compared to pristine borophene or graphene photodetectors.This work informs emerging efforts to integrate borophene into nanoelectronic applications for both fundamental investigations and technological applications.

关 键 词：borophene GRAPHENE HETEROSTRUCTURE PHOTODETECTOR two-dimensional materials 

分 类 号：O61[理学—无机化学]