当前位置: X-MOL 学术Org. Electron. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Advanced Poly(ethylene glycol)/polythiophene globular nanostructures in P3HT:PCBM photovoltaics
Organic Electronics ( IF 2.7 ) Pub Date : 2020-02-29 , DOI: 10.1016/j.orgel.2020.105676
Anqiang Jia , Haiyan Liu , Nafiseh Sorkhishams , Bakhshali Massoumi , Raana Sarvari , Samira Agbolaghi

Semiglobular and globular nanostructures were designed by conducting the isothermal crystallization on dilute solutions of Y-type poly(ethylene glycol) (PEG)-b-polythiophene (PTh)2 and PEG-b-poly(3-dodecyl thiophene) (PDDTh)2 copolymers. The semiglob(PEG-star-PTh) (6–25 nm) and glob(PEG-star-PDDTh) (5–16 nm) nanostructures were then employed as the morphology compatibilizers in active layers of poly(3-hexylthiophene) (P3HT):phenyl-C71-butyric acid methyl ester (PC71BM) solar cells. The incorporation of pre-designed glob(PEG-star-PDDTh) (11.25 mA/cm2, 55%, 0.66 V, 8.7 × 10−5 cm2/V.s and 7.9 × 10−4 cm2/V.s) and semiglob(PEG-star-PTh) (13.03 mA/cm2, 60%, 0.69 V, 2.1 × 10−3 cm2/V.s and 1.5 × 10−2 cm2/V.s) nanostructures significantly improved the morphological and photovoltaic characteristics, leading to the efficacies of 4.08 and 5.39%, respectively. The ordered assemblies of polythiophenes, in particular the PTh backbones without any side chains, were capable of controlling the morphology in a better manner compared with the individual polymer chains. Although the PEG-b-(PDDTh)2 (8.7 ns) and PEG-b-(PTh)2 (9.8 ns) block copolymers increased the life time, the pre-designed glob(PEG-star-PDDTh) (14.5 ns) and semiglob(PEG-star-PTh) (19.1 ns) scrolled nanostructures further affected the reduction of charge trap states. The P3HT:PC71BM:semiglob(PEG-star-PTh) systems also demonstrated the lower charge transfer resistance (Rtr = 158 Ω cm2) with respect to the glob(PEG-star-PDDTh) based devices (309 Ω cm2).



中文翻译:

P3HT:PCBM光伏中的高级聚乙二醇/聚噻吩球状纳米结构

- Semiglobular和球状纳米结构通过进行关于Y型聚(乙二醇)(PEG)的稀溶液等温结晶化设计b -polythiophene(PTH)2和PEG- b -聚(3-十二烷基噻吩)(PDDTh)2共聚物。然后,将半球形(PEG- star -PTh)(6–25 nm)和球形(PEG- star -PDDTh)(5–16 nm)纳米结构用作聚(3-己基噻吩)(P3HT)活性层中的形态相容剂。 ):苯基-C71-丁酸甲酯(PC71BM)太阳能电池。预先设计的水珠的掺入(PEG--PDDTh)(11.25毫安/厘米2,55%,0.66 V,8.7×10 -5 厘米2/ Vs和7.9×10 -4 厘米2 / Vs的)和semiglob(PEG--PTh)(13.03毫安/厘米2,60%,0.69 V,2.1×10 -3 厘米2 / Vs和1.5×10 -2  cm 2 / Vs)纳米结构显着改善了形态和光伏特性,导致效率分别为4.08%和5.39%。与单独的聚合物链相比,聚噻吩的有序组装体,特别是没有任何侧链的PTh主链,能够更好地控制形态。尽管PEG- b-(PDDTh)2(8.7 ns)和PEG- b-(PTh)2(9.8 ns)嵌段共聚物增加了使用寿命,预先设计的球形(PEG- star -PDDTh)(14.5 ns)和半球形(PEG- star -PTh)(19.1 ns)滚动纳米结构进一步影响了电荷陷阱态的减少。P3HT:PC71BM:semiglob(PEG- star -PTh)系统还显示出相对于基于glolob (PEG- star -PDDTh)的器件(309Ωcm 2)更低的电荷转移电阻(R tr  = 158Ωcm 2) 。

更新日期:2020-03-02
down
wechat
bug