Synthesis and characterization of Sm3+-doped BARIUM STANNATE (cas 12009-18-6) down-conversion nanocrystals and its application in dye-sensitized solar cells

Add time:07/26/2019    Source:sciencedirect.com

Sm3+-doped BARIUM STANNATE (cas 12009-18-6) (BaSnO3:Sm3+) down-conversion particle was prepared via a sol-gel method with SnCl4·5H2O, BaCO3 and Sm(NO3)3 as raw materials followed by an annealing process. Differential thermal analysis (TG/DTA), X-ray diffraction analysis (XRD), scanning electronic microscope (SEM), and energy dispersive spectroscopy (EDS) confirmed the formation of BaSnO3:Sm3+ nanocrystals with a typical perovskite structure. The photoluminescence (PL) spectra indicated that the as-prepared BaSnO3:Sm3+ nanocrystals could convert UV-light to yellow light at 587 nm and effectively widen the spectra response ranges of the DSSC to the ultraviolet region. The photoelectric properties of the dye-sensitized solar cells (DSSCs) based on BaSnO3:Sm3+ photo-anodes were also investigated. The BaSnO3:Sm3+ down-conversion photo-anodes showed a much greater photovoltaic efficiency compared with the photo-anode of BaSnO3 without rear earth (RE). The photoelectric conversion efficiency of the DSSCs based on BaSnO3:Sm3+ photo-anode doping Sm3+ of 1mol% was almost twice higher than that based on pure BaSnO3 photo-anode under the simulated light irradiation.

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