单分子层过渡金属硫系化合物聚合物复合纳米材料的超快非线性吸收光谱研究

项目名称： 单分子层过渡金属硫系化合物聚合物复合纳米材料的超快非线性吸收光谱研究

项目编号： No.61308087

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 无线电电子学、电信技术

项目作者： 董宁宁

作者单位： 中国科学院上海光学精密机械研究所

项目金额： 27万元

中文摘要： 过渡金属硫系化合物（如MoS2、MoSe2、WS2等）是一类具有类似石墨烯结构的新型二维层状半导体纳米材料，近年来以其独特的结构和物理性质引起了广泛的关注。相比于石墨烯，此类材料存在可调控带隙、可见红外波段发光等优点，在光子学领域有着广阔的应用前景。然而，针对其基本光子学性质的研究目前尚较缺乏，限制着其在光子学领域的应用拓展。本项目以过渡金属硫系化合物体系为研究对象，发展大批量制备高品质硫系化合物单分子层结构的液相剥离技术；面向器件开发，制备聚合物纳米复合材料；系统研究材料单体及聚合物复合材料涵盖可见及近红外波段的超快非线性吸收光谱，分析激光脉宽、波长、材料条件、环境等因素对非线性光谱的影响，建立非线性吸收模型模拟分析材料结构与非线性性质的关联关系。本项目致力于构建完备的单分子层过渡金属硫系化合物聚合物复合材料的超快非线性吸收光学研究体系，为开发基于此类材料的光子器件提供最基本的资料。

中文关键词： 过渡金属硫系化合物；二维纳米结构；非线性吸收光谱；聚合物复合材料；

英文摘要： Transition metal dichalcogenides (TMDCs), such as MoS2, MoSe2, WS2, is a class of new emerged two-dimensional (2D) layered semiconductors with graphene-liked structure. In recent years, they have attracted considerable attention due to the unique structures and physical properties. In comparison to graphene, TMDCs exist controllable bandgap and emerge photoluminescence in visible and infrared range, which have broad application prospects in the field of photonics. However, there are few investigations on their basic photonic properties, which confine their applications in the field of photonics. The project focuses on the TMDCs, aims to develop high efficient liquid phase exfoliation technique for mass production of high quality monolayer TMDCs nanosheets, prepare polymer composites for photonic applications, study the ultrafast nonlinear absorption spectra of monolayer TMDCs nanosheets and polymer composites in the range of visible and near-infrared, analyze the impacts of pulse width, wavelength, material parameters, and environment conditions etc. on nonlinear spectra, and establish nonlinear absorption model to modulate the correlations between structure and nonlinear properties. The project devotes to build a research platform on ultrafast nonlinear optics of monolayer TMDCs polymer composites, provide basi

英文关键词： Transition metal dichalcogenides (TMDCs)；2D nanostructure；Nonlinear absorption spectra；Polymer composites；