表面等离激元(SPs)热载流子效应为我们提供了高效和“智能”的光电能量转化方案。探索可以实现更高效电子-空穴分离、更低成本、更广应用范围的半导体-金属异质结体系，对于推进该领域的发展至关重要。本项目拟构筑一种新型基于有机半导体-金属纳米结构异质结的高效热载流子激发和传输体系。将实验与理论计算相结合，深刻理解有机半导体与金属之间独特界面作用下的分子构象与电子耦合(跃迁)动力学特征，建立完整的SPs驱动下热载流子跃迁物理模型，推演不同跃迁类型下的量子效率及优化方案，揭示界面调控在提升热载流子传输效率中的物理本质和调制规律。在此基础上，将有机半导体与手性等离激元超构表面相结合，开发超紧凑、高性能的圆偏振光探测器，完成从基本原理探索到功能性器件开发的研究工作。本研究将揭示SPs驱动下有机半导体-金属异质结中热载流子的激发与跃迁机理，为有机热载流子光电器件的构筑提供基本设计原则、理论框架及实现途径。

Plasmon hot carriers (PHC) provide us with an effeicnet and “smart”solution for photon-to-electron conversion. Exploring a novel semiconductor-metal heterostructure that promises more efficient carriers transition, lower cost and broader application ranges is of paramount importance to advance the PHC-related devices. Here, we propose a new PHC scheme composed of organic semiconductor-metallic nanostructure heterojunction,potentially allowing the efficient hot carrier exciation and transition. By combining the experiments and theoretical calculations, the molecular conformation and electron coupling （transition）dynamics occuring at the unique interface of organic semiconductor and metal will be investigated. A complete physical model will be established to understand the SPs-driven hot carrier transition in the organic-metal interface. Besides, optimized conditions will be explored to realize the higher quantum efficiencies. We will also reveal the physical nature and modulation laws of interface engineering in improving the transport efficiencies of hot carriers. On this basis, the chiral plasmon metasurface will be combined with organic semiconductor to realize the ultra-compact, high-performane circularly polarized light detection, achieving the practical applicaion of such organic-metal heterojunction. This study will reveal the excitation and coupling mechanism of SPs-driven hot carriers in organic semiconductor-metal heterojunction, and provide basic design principles, theoretical framework and implementation approaches for the construction of organic hot carrier optoelectronic devices.