随着人类经济和社会的快速发展使消耗能源速度越来越快，人们对太阳能等可再生清洁能源的需求正大幅增加。然而，目前光伏组件的成本仍有待显著降低。为了不断降低成本和提高光电转换效率，学术界一直在对电池的转换机制和电池结构进行着大量的研究。本项目将发展准确高效的多尺度理论模拟方法，并应用于等离子激元光伏器件，以理解光伏器件中在金属纳米颗粒表面等离子激元增强效应下的核心微观过程—光激发产生的电子和空穴及其分离和复合过程，研究影响电子空穴对的分离和复合过程速率的主要因素，并设计有利于分离和抑制复合过程的可能途径。解释相关实验并提高等离子激元光伏器件的光电能转化效率，以及为设计新型太阳能电池提供理论依据与指导。

With the rapid economic growth and urbanization, the usage of fossil fuels has been increasing greatly. Thus, there is a growing need for alternative renewable energy sources like solar cells. However, the current price of photovoltaic modules remains expensive and has to be significantly reduced in order to compete against mature fossil fuels. To lower the cost and improve the photocurrent conversion efficiency, there have been much research efforts devoted to understand the photocurrent conversion mechanism and study the cell architectures. In this project, we aim at developing a highly efficient and accurate multiscale simulation method. The method will be applied to study plasmonic solar cells and understand the microscopic processes in surface plasmon enhanced solar cells. The project will study the main factors governing the generation and recombination of electron-hole pairs. Through extensive studies on plasmonic solar cells, we can interpret relevant experiments and improve energy conversion efficiency of plasmonic photovoltaic devices, as well as provide a theoretical basis and guidance for the design of emerging solar cells.