Improved efficiency of ZnSe QDs—Si hybrid solar cell system by down shifting process1
作者： Ni Liu , Ling Xu , Hongyu Wang , Jun Xu , Weining Su
关键词: Luminescence 、 Physics 、 Wavelength 、 Ultraviolet 、 Optoelectronics 、 Spectral line 、 Aqueous solution 、 Quantum dot 、 Hybrid solar cell 、 Absorption cross section
摘要: Traditional Si solar cells have a narrow active absorption cross section among the short wavelength range (200–400 nm). The down-shifting process can efficiently improve spectral response of by converting shorter wavelengths (i.e., ultraviolet, UV) to longer visible range). Here, ZnSe quantum dots (QDs), prepared an aqueous solution method and employed as luminescent layer, were spin coated onto upper surface manufactured cells. Measurements under standard test conditions (AM1.5, 100 mW/cm2) show that efficiency QDs–Si hybrid cell is increased from 11.48% to12%. improvement ascribed efficient QDs, which enhances spectra in UV region for mechanism this optical coupling enhancement investigated detail. These results support case low-cost QDs be ...
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