Growth of centimeter scale Nb_(1−x)W_(x)Se_(2) monolayer film by promoter assisted liquid phase chemical vapor deposition
作者机构：Key Laboratory of Advanced Functional MaterialsMinistry of EducationCollege of Materials Science and EngineeringBeijing University of TechnologyBeijing 100124China Key Laboratory of Optoelectronics Technology of Education Ministry of ChinaFaculty of Information TechnologyBeijing University of TechnologyBeijing 100124China School of PhysicsBeihang UniversityBeijing 100191China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2022年第15卷第3期
页 面：2608-2615页
核心收录：
学科分类：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]
基 金：the National Science Foundation of China(Nos.61922005 and U1930105) the Beijing Municipal Natural Science Foundation(No.JQ20027) The National Natural Science Foundation of China(No.62005003) The General Program of Science and Technology Development Project of Beijing Municipal Education Commission(No.KM202110005008) The Basic Research Foundation of Beijing University of Technology(No.048000546320504)
主 题：centimeter scale Nb_(1−x)W_(x)Se_(2) promoter assisted liquid phase chemical vapor deposition
摘 要：Two-dimensional(2D)transition-metal dichalcogenide materials(TMDs)alloys have a wide range of applications in the field of optoelectronics due to their capacity to achieve wide modulation of the band gap with fully tunable ***,it is still a challenge for growing alloys with uniform components and large lateral size due to the random distribution of the crystal nucleus ***,we applied a simple but effective promoter assisted liquid phase chemical vapor deposition(CVD)method,in which the quantity ratio of promoter to metal precursor can be controlled precisely,leading to tiny amounts of transition metal oxide precursors deposition onto the substrates in a highly uniform and reproducible manner,which can effectively control the uniform distribution of element components and nucleation *** this method,a series of monolayer Nb_(1−x)W_(x)Se_(2)alloy films with fully tunable compositions and centimeter scale have been successfully synthesized on sapphire *** controllable approach opens a new way to produce large area and uniform 2D alloy film,which has the potential for the construction of optoelectronic devices with tailored spectral responses.
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