کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
176329 458940 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Novel organic dyes incorporating a carbazole or dendritic 3,6-diiodocarbazole unit for efficient dye-sensitized solar cells
ترجمه فارسی عنوان
رنگ های ارگانیک جدید حاوی یک واحد 3،6 دیویدوکارآزول کربازول یا دندریتیک برای سلول های خورشیدی حساس به رنگ موثر
کلمات کلیدی
رنگ ارگانیک، کربازول، دندریتیک 3،6-دیویدوکاربازول، تیوفن، سلول های خورشیدی حساس شده به رنگ، عملکرد فتوولتائیک
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• Organic dyes based on a carbazole or dendritic 3,6-diiodocarbazole were synthesized.
• Incorporation of 3,6-diiodocarbazole enhances the molar extinction coefficients.
• Introduction of dendritic donor suppresses the charge recombination with electrolyte.
• The properties of the dyes were tuned by changing the conjugation of the π-linkers.

Four organic photosensitizers incorporating a carbazole or 3,6-diiodocarbazole unit as the electron donor, a benzene/thiophene or oligothiophene moiety as the conjugated spacer, and 2-cyanoacrylic acid as the electron acceptor have been synthesized. The photovoltaic performance data are quite sensitive to the structural modification of sensitizer. The introduction of the benzene/thiophene linker benefits from lower tendency to aggregate, but disfavors the electron transport between donor and acceptor. The addition of a thiophene unit in the bridge efficiently red-shifts the absorption response, however, organic dyes have some π–π aggregation. Incorporation of 3,6-diiodocarbazole as a dendritic donor unit not only enhances the molar extinction coefficients of the absorption but also suppresses the charge recombination with electrolyte.

A novel class of organic dyes containing a carbazole or dendritic 3,6-diiodocarbazole unit has been synthesized and characterized. The electro-optical properties of these dyes can be tuned by changing the conjugation length of the π-linkers. Incorporation of 3,6-diiodocarbazole as a dendritic donor unit not only enhances the molar extinction coefficients of the absorption but also suppresses the charge recombination with electrolyte.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Dyes and Pigments - Volume 100, January 2014, Pages 269–277
نویسندگان
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