基于 NaYF4:Yb(3+)、Er(3+)掺杂纳米晶 TiO2 电极的染料敏化太阳能电池的光伏性能增强。
Enhanced photovoltaic performance of dye-sensitized solar cells based on NaYF4:Yb(3+), Er(3+)-incorporated nanocrystalline TiO2 electrodes.
机构信息
Anhui Key Laboratory of Spin Electron and Nanomaterials, Suzhou University, Suzhou 234000, PR China.
Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China.
出版信息
J Colloid Interface Sci. 2015 Aug 1;451:15-20. doi: 10.1016/j.jcis.2015.03.053. Epub 2015 Apr 3.
Near infrared to visible up-conversion of light by rare earth ion-doped phosphors (NaYF4:Yb(3+), Er(3+)) that convert multiple photons of lower energy to higher energy photons offer new possibilities for improved performance of photovoltaic devices. Here, up-conversion phosphor NaYF4:Yb(3+), Er(3+) doped nanocrystalline TiO2 films are designed and used as a electrode for dye-sensitized solar cells, and the photovoltaic performance of DSSCs based on composite electrodes are investigated. The results show the cell with NaYF4:Yb(3+), Er(3+) achieves a power conversion efficiency of 7.65% under one sun illumination (AM 1.5G, 100mWcm(-2)), which is an increase of 14% compared to the cell without NaYF4:Yb(3+), Er(3+) (6.71%). The performance improvement is attributed to the dual effects of enhanced light harvesting from extended light absorption range and increased light scattering, and lower electron transfer resistance.
通过掺杂稀土离子的荧光粉（NaYF4:Yb(3+)，Er(3+)）将低能量的多个光子转换为高能量光子的近红外到可见上转换，为提高光伏器件的性能提供了新的可能性。在这里，设计并使用上转换荧光粉 NaYF4:Yb(3+)，Er(3+)掺杂纳米晶 TiO2 薄膜作为染料敏化太阳能电池的电极，并研究了基于复合电极的 DSSC 的光伏性能。结果表明，在 1 个太阳光照射下（AM 1.5G，100mWcm(-2)），含有 NaYF4:Yb(3+)，Er(3+)的电池的功率转换效率达到 7.65%，与不含 NaYF4:Yb(3+)，Er(3+)的电池（6.71%）相比提高了 14%。性能的提高归因于扩展的光吸收范围和增加的光散射增强光捕获的双重作用，以及更低的电子转移电阻。
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