由有机聚合物为电子给体（D）和无机纳米结构为电子受体（A）组成的杂化型聚合物太阳电池具有独特优势，是一种有潜力的新型太阳电池。氧化物纳米结构是一种很好的电池受体材料,但是聚合物/氧化物电池的效率目前仍不高（< 3%），主要界面问题在于D/A界面相容性差、界面激子分离和电荷注入效率低、许多界面结构特性相关的基本物理问题不清楚。本项目以高效聚合物/氧化物太阳电池为目标牵引，用无机和有机共修饰方法为电池构筑多元复合D/A界面，以克服单一有机或无机修饰界面的局限性；针对具有多元复合界面的电池结构和载流子输运过程等方面的特点，充分考虑多元复合界面在光电转换中的作用，建立载流子输运理论模型,以综合性地描述光电转换过程的动力学行为；理论与实验相结合，揭示影响电池性能的关键界面因素和物理机制，为电池结构的优化提供科学依据。本项目的实施可促进低价太阳电池的发展。

Hybrid polymer-based solar cells (HPSCs) that use conjugated polymers as an electron donor (D) and inorganic nanostructures as an electron acceptor (A) are novel and potential solar cells because of their particular advantages. Nanostructures of oxides are good electron-accepting materials for solar cells. However, the power conversion efficiency of polymer/oxide solar cells is not high yet (< 3%), mainly due to the poor compatibility between inorganic and organic components, the low efficiencies of exciton dissociation and charge carrier injection at D/A interface, and many issues concerning the structural characteristics at the D/A interface are still unclear. This project aims at the access to the polymer/oxide devices with high efficiency. For this purpose, multicomponent polymer/oxide interfaces are constructed for HPSCs by interfacial co-modification with organic and inorganic modifiers in order to overcome the limitations in the mono-modification with either organics or inorganics; the theoretical model of carrier transportation is developed for comprehensively description of the dynamics in the key steps involved in photon-to-current conversion in the HPSCs with multicomponent interfaces, according to the device architecture and the feature of charge carrier transportation and in consideration of the effect of the multicomponent interface on the conversion process; combinational studies with the theoretical and experimental data, the key interfacial factors that governing device efficiency and the related physical principles are revealed, providing the scientific bases for device optimization. Implementation of this project can promote the development of low-cost solar cells.