کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1441138 1509390 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Substituent effect of fulleropyrrolidine acceptors on bilayer organic solar cells
ترجمه فارسی عنوان
اثر جایگزین پتروفرولیدین کامل بر روی سلول های خورشیدی آلی دو لایه
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد بیومتریال
چکیده انگلیسی


• Th-C60 based devices have a larger open-circuit voltage than that of PFTh-C60.
• The highest power conversion efficiency of Th-C60 based device reaches 0.79%.
• The phenylfluorenyl moieties of PFTh-C60 damage the device performance.
• High chemical structure and device stability of PFTh-C60.

Two fulleropyrrolidine derivatives, Th-C60 and PFTh-C60, as the acceptors are synthesized to investigate the substituent effects on the device performance in bilayer organic solar cells (OSCs). The devices with a configuration of ITO/MoO3/CuPc/acceptor/BPhen/Ag are optimized by varying the thickness of MoO3 as the anode buffer layer. Th-C60 based devices have a slightly larger open-circuit voltage (Voc) of 0.47 V than the counterpart C60 of ∼0.46 V and PFTh-C60 of ∼0.44 V with the same device structures. Th-C60-based devices exhibited a highest Voc of about 0.49 V when the thickness of MoO3 is 4 nm. In contrast, the bulky phenylfluorenyl moieties (PFMs) of PFTh-C60 deteriorated the device performance with regard to the precursor Th-C60. The maximum power conversion efficiency (PCE) of Th-C60 based device reaches 0.79% with a short-circuit current density (Jsc) of 2.65 mA/cm2, Voc of 0.49 V, and fill factor (FF) of 60.5%. The results indicate that there are dramatically different structure–performance relationships and molecular design principles between organic bilayer- and bulk-heterojunction solar cells.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Synthetic Metals - Volume 187, January 2014, Pages 118–122
نویسندگان
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