کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6598522 | 1423879 | 2018 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Organic phototransistors with bulk heterojunction sensing-channel layers containing soluble difluorinated diketopyrrolopyrrole acceptor
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Here we report synthesis of a difluorinated diketopyrrolopyrrole (DPP) derivative, 3,6-bis(5-((E)-3,5-difluorostyryl)thiophen-2-yl)-2,5-bis(2-ethylhexyl)-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione (EHD3FV), and its application as a photosensing electron acceptor in the bulk heterojunction (BHJ)-type organic phototransistors (OPTRs). EHD3FV was synthesized via the palladium-catalyzed Suzuki cross-coupling reaction between 3,6-bis(5-bromothiophen-2-yl)-2,5-bis(2-ethylhexyl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione and trans-2(3,5-difluorophenyl) vinyl boronic acid pinacol ester. The pristine EHD3FV film showed optical absorption up to >850â¯nm, while its highest occupied molecular orbital (HOMO) energy reached â5.87â¯eV. The EHD3FV molecules were mixed with poly(3-hexylthiophene) (P3HT) leading the BHJ (P3HT:EHD3FV) sensing-channel layers for OPTRs. The OPTRs fabricated exhibited noticeable photoresponses upon illumination with different wavelengths of visible light (550â¯nm and 700â¯nm). The best responsivity (photoresponse) was achieved at the 8:2 (P3HT:EHD3FV) composition, even though the transistor performances in the dark became lower as the EHD3FV content increased. The present result supports the capability of EHD3FV as a photosensing electron acceptor in the BHJ-type OPTRs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Dyes and Pigments - Volume 156, September 2018, Pages 219-224
Journal: Dyes and Pigments - Volume 156, September 2018, Pages 219-224
نویسندگان
Chulyeon Lee, Joonwoo Kim, Yejin Moon, Dohan Kim, Hyemi Han, Hwajeong Kim, Youngkyoo Kim,