二维黑磷应力依赖拉曼光学性质研究

The proposal is aiming at study on strain dependent Raman optics property of 2D black phosphorus. Black phosphorus, as new 2D materials with bandgap structure tunable by thickness, high carrier mobility, and anisotropic photoelectronic properties, shows its unique charm in large potential applications in electronics and optoelectronics. In this study, black phosphorus, which is the most popular 2D materials, was chosen as the study object. Firstly, well controlled fabrication method of few-layered black phosphorus is going to be established. According to the method, the size, thickness and surface property of black phosphorus can be tailored. The well-established fabrication method for few-layer black phosphorus will provide the aiming sample for strain dependent Raman optics property study. Secondly, study on the changes of Raman spectrum of black phosphorus under different strained condition is going to be studied. Summarizing the rule of the Raman changes according to the changing strained condition. Thirdly, study on the strain dependent nonlinear optics property. Fourthly, the law of strain dependent property is going to be summarized, by using an exact strain condition as the connection bridge. Finally, according to the as established law of strain dependent nonlinear optics, it aiming to realize nonlinear optics property analysis of black phosphorus under an unknown strained condition. Hopping the law of strain dependent Raman optics property could at least provide to solution when putting black phosphorus into real application in nonlinear optics.

本项目拟开展二维黑磷应力依赖拉曼光学性质的研究。黑磷，作为一种具有可调节直接带隙、高载流子迁移率和显著的各向异性光学特性等优越特性的新型二维材料，在材料领域以及光电器件领域展示着其独特的魅力。然而，实际应用中，制备任何基于黑磷的光学器件时，黑磷都是依附在一种基底之上作为器件的一个组成部分，当其附着在基底表面时，势必会受到基底表面应力场的作用而改变其在真空条件下理论模拟或者在其他基底上测试得到的光学性能参数。针对此问题，本项目以黑磷作为研究对象，分别开展黑磷的可控制备、黑磷的应力依赖拉曼研究和黑磷的应力依赖非线性光学性质研究。最终以应力场为桥梁，搭建相同应力场下拉曼光谱和非线性吸收和折射光学性质的对应关系，系统的总结出黑磷应力依赖拉曼光学性质变化规律。并将这种规律应于不同应力场下黑磷非线性吸收和折射率性质的分析。为黑磷实际应用时，解决应力场对黑磷光学性质影响的问题提供可靠理论支持。

黑磷，作为一种具有可调节直接带隙、高载流子迁移率和显著的各向异性光学特性等优越特性的新型二维材料，在材料领域以及光电器件领域展示着其独特的魅力。然而，实际应用中，制备任何基于黑磷的光学器件时，黑磷都是依附在一种基底之上作为器件的一个组成部分，当其附着在基底表面时，势必会受到基底表面应力场的作用而改变其在真空条件下理论模拟或者在其他基底上测试得到的光学性能参数。针对此问题，本项目以黑磷作为研究对象，分别开展了黑磷的可控制备、黑磷的应力依赖拉曼研究和黑磷的应力依赖非线性光学性质研究。最终以应力场为桥梁，搭建相同应力场下拉曼光谱和非线性吸收和折射光学性质的对应关系，系统的总结了黑磷应力依赖拉曼光学性质变化规律。并将这种规律应于不同应力场下黑磷非线性吸收和折射率性质的分析。为黑磷实际应用时，解决应力场对黑磷光学性质影响的问题提供可靠理论支持。.本项目已经达到预期目标，并超额完成了任务指标，发表学术论文11篇在Chinese Physics B，Nature Communications，Advanced Materials、Advanced Functional Materials等顶级期刊上，申请发明专利11项目，授权发明专利3项，培养硕士研究生2名。