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以芝麻油为原料,采用化学气相沉积法合成出多壁碳纳米管(MWCNTs),经功能化改性、切短后用作有机光伏太阳能电池的添加剂。该有机光伏电池以聚3-辛基噻吩为光敏分子,PCBM为激子离化剂。结果表明,添加MWCNTs与功能化且切短的fc-MWCNTs,有机光伏电池的功率转换效率能分别提高22%和40%。由于较高的空穴迁移率,激子离化后,P3OT产生空穴的收集和运输得到提高。功能化和切短的fc-MWCNTs增加了其在P3OT,PCBM中的分散性,进而提高功率转换效率。
Using sesame oil as raw material, multi-walled carbon nanotubes (MWCNTs) were synthesized by chemical vapor deposition. After functional modification, they were used as additives for organic photovoltaic solar cells. The organic photovoltaic cell poly-3-octylthiophene as a photosensitive molecule, PCBM exciton exciton. The results show that the power conversion efficiency of organic photovoltaic cells can be increased by 22% and 40% respectively by adding MWCNTs and functionalized and short-cut fc-MWCNTs. Due to the higher hole mobility, the accumulation and transportation of holes by P3OT is enhanced after the excitons are ionized. Functionalized and chopped fc-MWCNTs increase their dispersion in P3OT, PCBM, thereby increasing power conversion efficiency.