项目名称: MoS2/ZnS核壳纳米微腔结构制备及其表面等离激元光发射和光致水解析氢研究
项目编号: No.61474043
项目类型: 面上项目
立项/批准年度: 2015
项目学科: 无线电电子学、电信技术
项目作者: 朱自强
作者单位: 华东师范大学
项目金额: 89万元
中文摘要: 本项目运用二次CVD、水热合成等方法并结合激光、等离子体刻蚀技术,制备一维MoS2/ZnS核壳纳米微腔结构,并研究其表面等离激元光发射增强效应和稳定光致水解析氢性能。研究该纳米结构微腔中激子极化激元与表面等离激元的耦合规律和该耦合对激子极化激元自发辐射的调控规律。研究表面等离激元在可见光波段内对微腔模式的影响,分析耦合的色散规律。利用显微荧光/拉曼光谱、多维光谱探测系统和光电化学测试等,对MoS2/ZnS核壳纳米结构的光、电、电化学性能进行研究。通过分子动力学模拟结合非平衡格林函数,研究材料生长过程中的成核、再构及相分离的动力学过程、表/界面演化反应和光-电-化学转换的物化机制;通过第一性原理计算掺杂、缺陷态和结晶性对材料电子结构、等离激元激发、耦合和光致水解析氢性能的影响;探索研发基于制备材料的超衍射、多波长等离激元纳米激光和高稳定可见光致析氢测试原理型器件。
中文关键词: 二硫化钼;一维核壳纳米结构;表面等离激元;光致水解析氢
英文摘要: By adopting fabricating methods such as two step CVD growth and hydrothermal synthesis methods combined with laser and plasma etching technology, the synthesis of one-dimensional MoS2/ZnS core-shell nanostructures microcavity will be realized. The properties of surface plasmon polaritons (SPPs) enhanced light emission, stable photoinduced hydrolysis and hydrogen generation based on the core-shell nanostructures will be investigated. This project will investigate the coupling between the exciton polariton and the surface plasmon polariton in the nanostructures microcavity, its effect on the microcavity modes, and the control to the spontaneous emission of the exciton polariton. The project will investigate the coupling effect of the plasmon polariton on the microcavity modes in the whole visible waveband and analyze the dispersion of the coupling. Microscopy fluorescence/Raman, multidimensional spectroscopy probe system and photoelectrochemical test will be utilized to measure the optical, electrical and electrochemical properties of the MoS2/ZnS core-shell nanostructuresas. The nucleation, reconstruction and phase separation process during growth of the materials as well as the surface/interface evolution reaction and physical-chemical mechanism of light-electrical-chemical conversion will be studied by molecular dynamics simulation combined with non-balance Green function. By using first-principle calculation method, the effect of doping, defects state and crystallinity on material electronic structure, SPPs excitation and coupling, photoinduced hydrogen generation performance will be analyzed. The exploration of the construction of beyond diffraction limited, multi-wavelength SPPs nano-laser prototype devices and high stability, visible light induced hydrogen generation testing devices based on the fabricated materials will also be performed.
英文关键词: molybdenum disulfide;one-dimensional core-shell nanostructures;surface plasmon polaritons;photoinduced hydrolysis and hydrogen generation