چاپ صفحه |  صفحه نخست سامانه |  چکیده مقاله |  نویسندگان |  دانلود مقاله | دانشگاه علوم پزشکی تبریز |
| Poly(3-thiophene ethanol) (P3ThEt)-graft-polystyrene (PSt) bottlebrushes were synthesized and applied in active layers of poly(3-hexylthiophene) (P3HT):phenyl-C71-butyric acid methyl ester (PC71BM) solar cells as the morphology compatibilizers. In presence of 15wt% of P3ThEt-graft-PSt bottlebrush compatibilizers, the P3HT crystallite dimensions (D(100) = 45.67 nm and D(020) = 30.12 nm) and Rmean of PCBM clusters (= 38.96 nm) were the largest and the layer spacings were all the smallest (d(100) = 1.054 nm and d(020) = 0.301 nm, and d(PCBM) = 0.406 nm). These dimensional properties led to better hole (1.9 × 10 –3cm 2 V –1 s –1 ) and electron (1.2 × 10 –2 cm 2 V –1 s –1 ) mobilities. Weight content of bottlebrushes was optimized in 15wt%, and thereby the best photovoltaic results subsuming the maximum cell efficiency of 5.37% were obtained in this turning point (12.75 mA cm –2 , 61%, 0.69 V). By exceeding the optimum weight percentage, all photovoltaic features plummeted and reached even less than the pristine devices (1.92% versus 2.24%). After an optimum weight percentage of compatibilizers, further enhancement in bottlebrush content in active layer saturated and finally oversaturated the system and, consequently, the cell parameters significantly decreased. Accumulation of bottlebrushes in interfaces and donor/acceptor phases ruined the system function even with large and packed P3HT crystallites and PC71BM clusters |
| نویسنده | نفر چندم مقاله |
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| رعنا سروری | اول |
| نام فایل | تاریخ درج فایل | اندازه فایل | دانلود |
|---|---|---|---|
| postdoc-medical- gavahi.pdf | 1398/10/08 | 23495912 | دانلود |
| 35.Electroactive PolythiophenePolystyrene Bottlebrushes as Morphology.pdf | 1398/12/16 | 3349529 | دانلود |
