کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1441502 1509415 2012 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Delayed fluorescence in α-quaterthiophene single crystal
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد بیومتریال
پیش نمایش صفحه اول مقاله
Delayed fluorescence in α-quaterthiophene single crystal
چکیده انگلیسی
The photoluminescence spectra were recorded, in α-quaterthiophene (α-4T) single crystal, for visible and UV excitation light. The latter exhibits a blueshift of about 5 meV with respect to the former. This value is comparable to the Van Der Waals energy. Delayed Fluorescence (DF), in α-quaterthiophene (α-4T) single crystal, was observed at room temperature. The delayed fluorescence emitted is explained in terms of a triplet exciton fusion model or the so called triplet-triplet excitons annihilation. Triplet excitons were created using direct excitation in their absorption band (1.91 eV). From the involved spectrum of delayed fluorescence the Davydov Splitting was experimentally evaluated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Synthetic Metals - Volume 162, Issues 19–20, November 2012, Pages 1746-1749
نویسندگان
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