کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6600228 458925 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced photovoltaic properties of di(dodecylthiophene)-alt-2,3-di(3-octoxylphenyl)-5,8-dithieno[3,2-b]thiophene 6,7-difluoroquinoxaline copolymer by fluorination
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Enhanced photovoltaic properties of di(dodecylthiophene)-alt-2,3-di(3-octoxylphenyl)-5,8-dithieno[3,2-b]thiophene 6,7-difluoroquinoxaline copolymer by fluorination
چکیده انگلیسی
A novel di(dodecylthiophene)-alt-2,3-di(3-octoxylphenyl)-5,8-dithieno[3,2-b]thiophene-6,7-difluoroquinoxaline copolymer (PBT-TTQ-F) and its counterpart of PBT-TTQ-H without the substituted fluorine atom were designed and synthesized. Significant effect of the attaching fluorine atoms in the polymer backbone on photovoltaic properties of copolymers was observed. In the optimized bulk hetero-junction polymer solar cells with a structure of ITO/PEDOT: PSS/copolymers: PC71BM (1:2, w/w)/Ca/Al, PBT-TTQ-F exhibited a higher power conversion efficiency (PCE) of 3.05% with a short-circuit current (Jsc) of 9.48 mA/cm2 and a fill factor (FF) of 48.6% under an illumination of AM 1.5, 100 mW/cm2. The PCE, Jsc and FF values are 1.2-1.7 times higher than those of the PBT-TTQ-H-based devices. Our results demonstrated that photovoltaic properties could be significantly enhanced by copolymeric fluorination in PCSc.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Dyes and Pigments - Volume 113, February 2015, Pages 312-317
نویسندگان
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