多层有机薄膜太阳电池的结构优化  

STRUCTURE OPTIMIZATION OF MULTILAYER ORGANIC THIN-FILM SOLAR CELLS

作　　者：王春锋[1] 郑建邦[1] 郝娟[1] 姜冰一[1] 曹崇德[1] 

机构地区：[1]西北工业大学理学院,陕西省光信息技术重点实验室,西安710072

出　　处：《太阳能学报》2014年第3期516-521,共6页Acta Energiae Solaris Sinica

基　　金：西北工业大学研究生创业种子基金(Z2012159)

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。For the multilayer structure CuPc/PTCDA/C60 organic thin-film solar cells, based on the optical interference and exciton diffusion principle in the thin-films, light wave transmission in multilayer thin-films were studied and the two main processes of optical absorption and exciton diffusion were simulated by Matlab software, which confined the organic photovoltaic efficiency, meanwhile the organic thin-film thickness are optimized. External quantum efficiency of cells and the photocurrent density are improved, then the best thin-films CuPc （4 nm）/PTCDA （23 nm）/C60 （67 nm） is obtained, in which case the external quantum efficiency is up to 34.67% , the photocurrent density is 0.1417 A/m2 and the steady-state exciton density is dramatically increased. While the external quantum efficiency of un-optimized cells is 9.7% and the photocurrent density is 0.1291 A/m2.

关 键 词：多层 薄膜厚度 外量子效率 结构优化 

分 类 号：O475[理学—半导体物理] TM914[理学—物理]