表面等离激元效应是提高半导体的发光效率，实现表面等离激元激光的理想途径，但现有研究对耦合机理、性能调控等重要问题仍缺乏深刻认识和有效解决方案。基于前期研究的ZnO回音壁激光，本项目拟开展II-VI族ZnCdS复合结构微纳激光研究，通过组分调控实现波长可调半导体激子激光；将石墨烯/金属与ZnCdS微纳结构相结合，分别构建石墨烯/ZnCdS，金属/ZnCdS，石墨烯/金属/ZnCdS复合结构，研究石墨烯和金属与ZnCdS之间相互作用所导致的光学性能变化；结合瞬态光谱、变温光谱和微区光谱技术，深刻揭示表面等离激元与半导体之间耦合的物理模型，为新型光电子器件的设计及应用提供理论支撑与技术参考。

Surface Plasmon (SP) has been considered as an ideal approach to enhance the emission efficiency of semiconductor materials and further generate surface plasmon laser. However, some critical issues are still in challenge, such ascoupling mechanism and performance control. Based on our recent work on ZnO Whispering-gallery mode lasing, this project firstly aims to investigate the II-VI group ZnCdS hybrid nano- and microstructure lasing and realize wavelength tunable semiconductor exciton lasing by band gap engineering. Combining the surface plasmon of graphene and metal with the ZnCdS semiconductor, the graphene/ZnCdS, metal/ZnCdS and graphene/metal/ZnCdS hybrid structures were designed and constructed to enhance the optical performance. A series analysis, including transient optical spectra, low temperature spectra, and micro-spectra technology, will be employed to investigate systematically SP/semiconductor coupling mechanism. It is expected to draw a general physical model for SP coupled semiconductor system and further provide theoretical support and technical reference to the design and application of new type of photoelectronic devices.