کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5213067 1383144 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Novel D(A-Ar)2 type small molecules with oligothiophene, diketopyrrolopyrrole and benzo[4,5]thieno [2,3-b]indole units: investigation on relationship between structure and property for organic solar cells
ترجمه فارسی عنوان
مولکول های کوچک مولکولی مولکول مولکولی مولکول مولکولی مولکول مولکولی مولکول مولکولی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی

Two novel D(A-Ar)2 type small molecules (SMs) of 3T(DPP-BTI)2 and 4T(DPP-BTI)2 were synthesized and characterized, which contain diketopyrrolopyrrole (DPP) arms, 6-dodecyl-6H-benzo[4,5]thieno[2,3-b]indole (BTI) terminals, and oligomerthiophene donor unit (3T=trithiophene, 4T=tetrathiophene). The relation-ship between structure and property was investigated. Compared with their corresponding parent A-D-A type SMs, both D(A-Ar)2 type SMs exhibited a significantly increasing circuit current density (Jsc) by 1.39∼1.59 times and hole mobility (μh) by one order of magnitude, as well as a comparable power conversion efficiency (PCE) in their OPV and hole-only devices. The better photovoltaic properties with PCE of 3.02% and Jsc of 10.41 mA cm−2 were obtained in the 3T(DPP-BTI)2 based OPV cells. It indicates that appending the BTI terminal unit into A-D-A-type SMs is beneficial to increasing the Jsc and μh values of its resulting D(A-Ar)2 type SMs in their corresponding devices.

205Two novel D(A-Ar)2 type small molecules (SMs) of 3T(DPP-BTI)2 and 4T(DPP-BTI)2 with oligothiophene, diketopyrrolopyrrole, benzo[4,5]thieno[2,3-b]indole units were synthesized. Compared to their parent A-D-A type SMs of 3TDPP2 and 4TDPP2, both D(A-Ar)2 type SMs exhibited a significantly increasing Jsc by 1.5-1.7 times and hole mobility (Mh) by one order of magnitude, as well as a comparable PCE in their corresponding OPV and hole-only devices.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tetrahedron - Volume 72, Issue 47, 24 November 2016, Pages 7430-7437
نویسندگان
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