中文摘要：

在分析有机聚合物光伏器件物理工作过程的基础上，依据光学原理和扩散理论建立了非相干光吸收模型和激子传输模型．模拟了限制光伏效率的光学吸收和激子扩散两个主要过程，获得了薄膜厚度与光学吸收、转换效率之间的函数关系，为增强有机薄膜的光学吸收、激子分离与传输并获得高转换效率的有机光伏电池奠定理论基础．

英文摘要：

We propose models of the incoherent optical absorption and exciton transport to simulate the processes of absorption and exciton diffusion in organic photovohaic devices according to the optical principle and diffusion theory. The functional relation of optical absorption, and the power conversion efficiency versus the thickness of the film has been obtained. We demonstrate that the developed model can be useful for the modelling of the optical absorption and exciton separation in the optimization of devices of organic photovohaic cells with high power conversion efficiency.