کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5187245 1381124 2009 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Highly efficient polymer blends from a polyfluorene derivative and PVK for LEDs
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Highly efficient polymer blends from a polyfluorene derivative and PVK for LEDs
چکیده انگلیسی

The photophysical and electroluminescent properties of blends of a polyfluorene derivative of the PPV type, poly[(9,9-dihexyl-9H-fluorene-2,7-diyl)-1,2-ethenediyl-1,4-phenylene-1,2-ethenediyl] (labeled as LaPPS16) and poly(vinylcarbazole) - PVK are presented and discussed in terms of the operating light emission mechanisms. Static and dynamic fluorescence measurements and morphology data showed a powerful exciton migration from the host (PVK) to the guest (LaPPS16) resulting in emission coming from solely LaPPS16, even when in concentrations small as 1%. Electroluminescence was greatly enhanced with the blending; increases of 18 times in efficiency and 20 times in luminance were achieved in the blend containing 20% LaPPS16, with 3 V applied voltage.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 50, Issue 25, 27 November 2009, Pages 6057-6064
نویسندگان
, , , , , ,