کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5399520 1505903 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhancing the efficiency of solar cells by down shifting YAG: Ce3+ phosphors
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Enhancing the efficiency of solar cells by down shifting YAG: Ce3+ phosphors
چکیده انگلیسی
Ce3+-doped yttrium aluminum garnet (YAG:Ce3+) is a luminescent down shifting material, and can convert ultraviolet (UV) and blue lights into yellow light. In this paper, the YAG:Ce3+ phosphors are applied on the surface of a monocrystalline silicon solar cell. Although the number of total photons after the down shifting conversion does not increase, the quantum efficiency of the solar cell in short wavelength range has been improved. The reason is that the UV and blue photons can hardly generate carriers in the depletion region of the p-n junction because most of them are absorbed before getting there, while the yellow photons emitted from the YAG:Ce3+ phosphors can generate electron-hole pairs in the region. Experimental results show that the down shifting phosphors have enhanced the energy conversion efficiency of the solar cell from 15.30% to 15.46%. Although the efficiency increase is small, the down-shifting phosphors provide a possible way to reduce the energy loss in the short wavelength range.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 157, January 2015, Pages 344-348
نویسندگان
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