微纳光电转换体系中不均匀性对电荷转移的影响  

Influence of inhomogeneous distributions on charge transfer in micro-nano optoelectronic conversion systems

作　　者：王雷[1] 王海宇[1] 

机构地区：[1]吉林大学电子科学与工程学院,集成光电子国家重点实验室,长春130012

出　　处：《科学通报》2016年第6期600-609,共10页Chinese Science Bulletin

基　　金：国家自然科学基金(21273096)资助

摘　　要：光电转换过程中的电荷转移机理研究对于理解诸如自然光合作用系统和染料敏化光伏等复杂光电转换体系中的各种光物理过程起着非常重要的作用.由于这些物理机制通常都深藏于所研究目标材料与周围环境的各种精细的相互作用之中,如果能把实验上观测到的各种电荷转移动力学中的普遍性总结出来,那对光物理过程的研究来说将是非常有益和必要的.本文将根据我们之前的相关工作,回顾在复杂光电转换系统中与电荷转移有关的发展历史,介绍与系统不均匀性有关的理论模型.最后,详细讨论动态及静态不均匀分布模型在自然光合作用体系及染料敏化体系中初始电子转移过程的应用.The mechanisms of charge transfer are of high importance for the understanding of photophysical processes in the complex photo-electron conversion systems, i.e., natural photosynthesis systems and dye-sensitized photovoltaics. Since these physical mechanisms are usually deep hidden by the subtle interactions between the subjects in study and the surrounding environments, drawing a general profile of the experimentally observed charge transfer kinetics from the universality point of view is of benefit and necessary. In this way, according to our previous works, these efforts on the aspect of charge transfer involved with both theoretical models and time-resolved experiments on the dynamical and static inhomogeneous distribution in the complex photo-electron conversion systems are summarized in this review. After a short critical survey of classic electron transfer theories, for example, the early Marcus expression, where there are two adjustable parameters, that is the driving force and reorganization energy, we focus on the recent efforts concerning the roles of inhomogeneous distributions of the static interaction（electronic coupling） and dynamical structure motions（static and dynamical inhomogeneous distribution） in these complex photo-electron conversion systems, such as protein dynamics in natural photosynthesis systems and initial electron injection in dye-sensitized systems. The details of the static and dynamical inhomogeneous distribution models are introduced at first. They are divided by the interaction types between the reactants/products and the surrounding environment in the complex photo-electron conversion systems. For the dynamical inhomogeneous distribution model in the reaction center of natural photosynthesis systems, it highlights the complex solvent environment, such as the protein environment of the reaction center. While for the static inhomogeneous distribution model in the dye-sensitized and quantum dot-sensitized solar cell systems, it considers that there are many sub-energy sta

关 键 词：电荷转移 不均匀分布 蛋白质动力学 染料敏化体系 超快光谱 

分 类 号：TB303[一般工业技术—材料科学与工程]