کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1441123 1509390 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of π-conjugated side chains on properties and performances of photovoltaic copolymers
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد بیومتریال
پیش نمایش صفحه اول مقاله
Effects of π-conjugated side chains on properties and performances of photovoltaic copolymers
چکیده انگلیسی


• We synthesize three types of copolymers and investigate their properties.
• Three copolymers are compared with our previous main-chain type copolymer.
• Highest power conversion efficiency reaches 4.49%.
• Conjugated side-chain with an electron-deficient group enhances the performance.

Poly[(benzodithiophene-2,6-diyl)(2,5-thienylene)] (P1) and its derivatives with π-conjugated side-chains (P2: thienylethenyl and P3: thienylcyanoethenyl) were designed and synthesized in order to study the effects of the conjugated side-chains on the optical, electrochemical, and photovoltaic properties of the copolymers. It was found that the electronic properties and energy levels of the copolymers can be effectively tuned through changing a conjugated side-chain attached to a polymer backbone. Polymer solar cells based on copolymer/PC61BM exhibited power conversion efficiencies of 2.85%, 3.44%, and 4.49%, respectively, for P1, P2, and P3 under a simulated solar light (AM 1.5 G, 100 mW/cm2), compared with 4.17% for a main-chain type copolymer corresponding to P3. The results reveal that the introduction of the conjugated side-chain with an electron-deficient group to a polymer backbone is an effective approach for improving the performance of the photovoltaic materials.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Synthetic Metals - Volume 187, January 2014, Pages 30–36
نویسندگان
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