二维原子晶体黑磷的可控生长及其各向异性光、电性质研究

项目名称： 二维原子晶体黑磷的可控生长及其各向异性光、电性质研究

项目编号： No.51502167

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 一般工业技术

项目作者： 徐华

作者单位： 陕西师范大学

项目金额： 20万元

中文摘要： 二维原子晶体黑磷优异的光、电性质和独特的各向异性使其在电子、光电子和新概念器件领域有巨大的潜在应用，但大面积二维黑磷的可控制备是制约该材料研究和应用的主要瓶颈问题之一。本项目借鉴化学气相传输生长块体黑磷单晶和范德华外延生长其它二维层状材料的思想，提出基于范德华外延的化学气相传输生长方法，可控制备大面积二维黑磷材料，并对所制备材料的光、电各向异性进行研究。通过在化学气相传输体系中引入适当的生长基底，利用基底与生长材料间的范德华力诱导黑磷在基底表面逐层外延生长，实现大面积、高质量、层数可控二维黑磷的制备；通过研究应力对黑磷光、电各向异性的调控作用，建立应力、晶格结构和各向异性之间的定性和定量关系，以实现通过应力调控获得所需的各向异性；采用原位光-电测量方法，研究黑磷不同晶格方向光、电性质的内在联系和协同作用，为构筑基于黑磷各向异性的新型光电器件提供理论依据和技术支持。

中文关键词： 黑磷；范德华外延；各向异性；光-电性质；新感念器件

英文摘要： Two-dimensional (2D) atomic crystal black phosphorus (BP) is a new semiconductor material, its superior electrical, optical and unique anisotropic properties make it have great application potential in the field of electronic, optoelectronic and new concept devices. However, the difficulty in controlled preparing large area 2D BP is one of the bottlenecks which restrict the material's research and application. In this project, we propose a van der Waals epitaxial-based chemical vapor transport growth method to controlled prepare large area 2D BP, which is inspired by the chemical vapor transport growth of bulk BP single crystal and the van der Waals epitaxial growth of other 2D materials. Through introducing an appropriate substrate in the chemical vapor transport system, the van der Waals force between substrate and material will induce BP epitaxial growth on the substrate, with this approach to realize the preparation of large area, high-quality and layer number controllable 2D BP material. Then, studying the strain modulation of the optical and electrical anisotropic of 2D BP to establish the relations between strain, structure and anisotropy, which is helpful to get the desired anisotropic properties with strain modulation. In addition, the relevance and synergy effect of the optical and electrical properties of BP among different lattice directions will be studied by using in situ optical-electrical measurement. Above research will provide valuable information and idea for designing and constructing the anisotropic-based new devices.

英文关键词： black phosphorus;van der Waals epitaxial;anisotropy;optical and electrical properties;new concept device