等离激元-胶体晶体复合结构的超宽带光全吸收现象、机理及应用研究

项目名称： 等离激元-胶体晶体复合结构的超宽带光全吸收现象、机理及应用研究

项目编号： No.11464019

项目类型： 地区科学基金项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 刘正奇

作者单位： 江西师范大学

项目金额： 62万元

中文摘要： 宽带光全吸收(BPA)在光电、能源等领域具有巨大的应用前景。如何实现具有BPA效应且易于制备的材料体系一直是国内外关注的热点。本项目拟设计和制备出大面积的等离激元-胶体晶体复合结构，通过研究金属等离激元与介质光学模式的相互作用，清晰给出BPA效应的物理图像，进而探讨其在能源与光电探测领域的潜在应用。主要内容包括：1)设计和制备出BPA结构体系，掌握该体系中胶体晶体结构、等离激元晶体结构及两者的联结方式等对BPA效应的影响规律；2)分析晶体结构的缺陷效应、短程有序和无序效应等与体系BPA特性的关联效应，修正和完善相关结构体系；3)研究等离激元共振与胶体晶体微腔间相互作用的模式及能流传输的方式，给出BPA响应的机理；进一步掌握实现超宽带包括可见全频光全吸收的方法及其物理机制，实现由物及理的一致性。本研究的意义是通过设计和发展全新BPA结构，为基于BPA效应的光电器件等的研究和应用奠定基础。

中文关键词： 宽带吸收；光全吸收；等离激元-胶体晶体；等离激元共振

英文摘要： Broadband light perfect absorption (BPA) effects have very broad application prospects in the fields of optoelectronics, energy and other areas. How to realize the materials with BPA effects and that these structures can be easily fabricated has long been pursued by the domestic and overseas researchers. In this project, we will design and fabricate large-area hybrid plasmonic-colloidal crystal structures, and clearly give the physical mechanisms of the BPA effects by the study on the interaction behavior between the metal plasmon modes and the dielectric optical modes and do further study on the potential applications in the fields of energy and optoelectronic detection. The main contents are: 1) to design and to fabricate BPA systems and to understand the influence rules of the BPA effects by the colloidal crystal structure, plasmonic crystal and their combining means; 2) to analyze the correlation effects on the BPA effects by the defect effects, short-range order effects and disorder effects of the cyrstal structure and to improve and to amend the relevant structure systems; 3) to study the interaction behavior between the plasmon resonances and the colloidal crystal microcavity and the energy flow propagating modes, then to give the mechanism of the BPA responses and further to master the method to realize ultra-broadband including the full visible frequency spectrum light perfect absorption as well as the mechanisms, and to finally achieve the consistency of from matter to physics. The research significance of this project is to lay the foundation for the investigations and applications of the optoelectronic devices based on the structures with BPA effects via the design and development of new BPA structures.

英文关键词： Broadband absorption;Light perfect absorption;Plasmonic-colloidal crystal;Plasmon resonance