کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9586316 1505938 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Luminescence of bound excitons in ZnO:Zn phosphor powders
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Luminescence of bound excitons in ZnO:Zn phosphor powders
چکیده انگلیسی
Luminescence and time-resolved luminescence spectra of ZnO:Zn phosphor powders have been investigated at low temperatures. ZnO:Zn phosphor powders under the band-to-band excitation exhibit two prominent luminescence lines attributed to the radiative recombination of bound excitons at 3.360 and 3.365 eV. The luminescence line at 3.360 eV originates from an exciton bound to an intrinsic defect serving as a neutral donor. It is found that the luminescence line at 3.365 eV has a short decay time of ∼80 ps, and shows a long tail toward the lower energy side of the spectral peak. The origin of the luminescence line at 3.365 eV is discussed in terms of bound excitons associated with surface defect states in ZnO:Zn phosphor.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 113, Issues 1–2, May 2005, Pages 115-120
نویسندگان
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