【摘要】 针对由CuPc/PTCDA/C60组成的3层有机薄膜太阳电池结构,基于光学干涉效应以及激子扩散理论,研究光波在多层薄膜中的传输特性,深入分析限制有机光伏效率的光吸收和激子扩散两个主要过程。利用Matlab软件从理论上对该结构中各层有机薄膜的厚度进行优化,从而可提高电池的外量子效率和光生电流密度,得到CuPc(4 nm)/PTCDA(23 nm)/C60(67 nm)的最佳膜厚组合,使得外量子效率达到34.67%,光生电流密度为0.1417 A/m2,稳态激子浓度分布显著增加,而未经优化的电池结构的外量子效率为9.7%,光生电流密度为0.1291 A/m2。更多还原

【Abstract】 For the multilayer structure CuPc/PTCDA/C60 organic thin-film solar cells,based on the optical interferenceand exciton diffusion principle in the thin-films,light wave transmission in multilayer thin-films were studied and the twomain processes of optical absorption and exciton diffusion were simulated by Matlab software,which confined the organicphotovoltaic efficiency,meanwhile the organic thin-film thickness are optimized. External quantum efficiency of cellsand the photocurrent density are improved,then the best thin- films CuPc(4 nm)/PTCDA(23 nm)/C60(67 nm)isobtained,in which case the external quantum efficiency is up to 34.67%,the photocurrent density is 0.1417 A/m2 andthe steady-state exciton density is dramatically increased. While the external quantum efficiency of un-optimized cells is9.7% and the photocurrent density is 0.1291 A/m2.更多还原