中文摘要：

用溶胶-水热法制备了Sm3+掺杂的Ti O2粉体(Ti O2∶Sm3+),将其按不同质量分数掺杂到P25基体中,制备了具有下转换功能的光阳极,并将其用于染料敏化太阳能电池中,提高了电池的光电性能。荧光光谱显示,Ti O2∶Sm3+粉体可以将紫外光转换为570~700 nm的可见光。当下转换光阳极中Ti O2∶Sm3+粉体的掺杂质量分数为80%时,短路电流密度达到13.12 m A/cm2,与纯P25光阳极相比,提高了26.5%,转换效率也提高了23.5%。

英文摘要：

Sm3+-doped TiO2 ( TiO2∶ Sm3+) nanocrystals were synthesized by the sol-hydrothermal method and the down-conversion positive glow were prepared with the matrix of P25 doped with dif-ferent mass fraction of the as-prepared TiO2∶Sm3+ powder, which was used to assemble the dye-sen-sitized solar cell ( DSSC) to improve the photoelectric properties. The fluorescence spectroscopy in-dicates that the TiO2∶Sm3+ possess down-conversion feature of converting ultraviolet light to 570-700 nm visible light. When the doped content of the as-prepared TiO2∶Sm3+ powder in the photo anode was 80%, the short circuit current density reached to 13. 12 mA/cm2 , increased by 26. 5%compared with the pure P25 photo anode, and the efficiency was also increased by 23. 5%.