کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1674500 1008964 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dithienothiophene based polymer as electron donor in plastic solar cells
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Dithienothiophene based polymer as electron donor in plastic solar cells
چکیده انگلیسی

In this work we have tested in bulk heterojunction solar cells a polymer with a high oxidation potential, Poly-(dithieno[3,2-b:2′,3′-d]thiophene)-3-decylthiophene (P1), as electron donor together with [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) as electron acceptor. We have studied the photovoltaic characteristics of solar cells made with different P1:PCBM blend composition. The incident photon-to-current efficiency spectra reaches EQEs of 40%, evidencing good charge photogeneration. The best power conversion efficiency, η = 0.83 under AM1.5 illumination, is found for solar cells containing 67% in weight of PCBM.As expected for polymers with high oxidation potentials, the open circuit voltage Voc attains high values (Voc ≥ 0.8 V), independently from the photoactive blend composition, but the fill factors FF of the cells are low (FF: 0.3–0.38), evidencing poor charge transport properties. The data here reported suggest that transport features, probably arising from poor polymer hole mobility, are the main limitation for cell performances.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 516, Issue 20, 30 August 2008, Pages 7205–7208
نویسندگان
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