倏逝波模式下修饰化电极的太阳电池层厚优化

Optimization of Thickness for Solar Cells of the Modified Electrode Based on Tunnelling Evanescent Waves

为了研究如何提高有机太阳能电池的光捕获并提高光电转化效率,基于LiF修饰Al电极能提高电池填充因子和稳定开路电压的结论,建立了NaF修饰Glass/ITO/PEDOT:PSS/MDMO-PPV:PCBM/Al有机太阳电池的层间光强分布理论模型。根据多层薄膜结构的有机太阳能电池的材料及光学特性,采用绒化入射面的方法引入朗伯漫反射,并结合对倏逝波模式下有机太阳能电池光捕获率的探讨,通过数值计算研究了NaF修饰层对光场分布的影响,提高了模型的光捕获并得出了有机太阳能电池捕获可见太阳光能最大值时各层厚参数Glass(1 mm)/ITO(120nm)/PEDOT:PSS(20 nm)/MDMO-PPV:PCBM(120 nm)/NaF(1 nm)/Al(110 nm)和电池的短路电流为2.76 mA/cm2这些结论。

In order to study how to improve the hght capture of organic solar cells and improve the photon to current conversion efficiency, based on the conclusion of the LiF＇ modified AI electrode improving the cell fill factor and short circuit current and stabling the open circuit voltage, a light intensity distribution theory model of organic solar cells Glass/ITO/PEDOT： PSS/ MDMO-PPV：PCBM/AI modified by NaF was developed. According to the structure of the multilayer film materials properties and optical properties for organic solar cells, lambert diffuse was introduced by texturing front surface. Besides, organic solar cells were combined with the evanescent wave model to improve hght trapping. By numerical calculation, the thickness parameters Glass（lmm）/ ITO（120nm）/PEDOT：PSS（20nm）/MDMO-PPV： PCBM （120nm）/NaF（lnm）/Al（110nm） of each layer in cell were obtained in the case of cells capture maximum visible hght energy and the short circuit current （2.76mA/cm2） of the cens was also obtained.