کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9586262 1505939 2005 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Up-converted luminescence of cyanine dye J-aggregates
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Up-converted luminescence of cyanine dye J-aggregates
چکیده انگلیسی
A J-band photoluminescence of cyanine dye J-aggregates was observed under excitation below the band gap. This emission is not due to two-photon absorption. The luminescence intensity becomes weaker with a decrease in temperature. For the excitation below the band gap, the rise and decay times of the J-band luminescence from cyanine dye concentration of 4×10−4 M are 9.0 and 155 ps, respectively. In case of the band-to-band excitation, the radiative decay starts just after excitation and fast and slow decay components have time constants of 13 and 54 ps, respectively. The lifetime of luminescence depends on the concentration of the cyanine dye.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 112, Issues 1–4, April 2005, Pages 416-419
نویسندگان
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