摘要
采用水热法制备SrTiO3∶Sm3+纳米粉体,将其作为下转换剂摻杂于纳米TiO2光阳极。用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、能谱分析仪(EDS)和荧光光谱仪对SrTiO3∶Sm3+粉体进行表征,并探讨了SrTiO3∶Sm3+摻杂量对染料敏化纳米TiO2太阳能电池光电性能的影响。结果表明:合成的SrTiO3∶Sm3+纳米粉体具有下转换功能,将紫外光转换为592 nm处的黄光,拓宽了光谱响应范围;随着SrTiO3∶Sm3+摻杂量的增加,电池的短路电流密度显著增大,当其摻杂量为10wt%时,电池的暗电流密度最小,光电转换效率最大为4.38%,相对于纯Ti O2效率提高了27%。
SrTiO3∶Sm3＋nanopowders were prepared by hydrothermal method,and then being doped in the nano TiO2 photoanode as down-conveter. The as-prepared SrTiO3∶Sm3＋nanoparticles were analyzed by X-ray diffraction,scanning electron microscopy,energy dispersive spectroscopy and fluorescence spectroscopy. The effect of SrTiO3∶Sm3＋nanoparticles doping content on the photoelectric performance of dye-sensitized solar cells（ DSSCs） were also investigated. The results show that the as-prepared SrTiO3∶Sm3 ＋nanoparticles could convert UV-light to yellow light at 592 nm and widen the spectra response range. As the SrTiO3∶Sm3＋doping content increasing, short current density of cells increase significantly,and when the doping content was 10wt%,the dark current density was the smallest,the corresponding efficiency reached 4. 38% which was improved by 27% compared with pure TiO2.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2015年第6期1563-1568,共6页
Journal of Synthetic Crystals
基金
辽宁省教育厅重大科技平台(2011-191)
国家海洋食品工程技术研究中心开放基金(2012FU125X03)
大连市科技平台建设项目(2010-354)
