摘要
以Sr(NO_3)_2和NaSnO_3为原料,采用水热法成功制备了SrSnO_3∶Sm^(3+)下转换粉体,并将其与TiO_2复合作为光阳极应用于染料敏化太阳能电池(DSSC)。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(FL)对SrSnO_3∶Sm^(3+)进行表征,探讨了SrSnO_3∶Sm^(3+)掺杂量对Sr SnO_3∶Sm^(3+)/TiO_2复合光阳极组装DSSC光电性能的影响。结果表明,通过水热法成功制备了棒状、短柱状和颗粒状混合形貌的SrSnO_3∶Sm^(3+),Sr SnO_3∶Sm^(3+)通过下转换作用将紫外光转换为587 nm的黄色光,拓宽了光谱响应范围。随着SrSnO_3∶Sm^(3+)掺杂量的增加,DSSC的短路电流密度增大。当Sr SnO_3∶Sm^(3+)掺杂质量分数为3%时,短路电流密度和光电转换效率分别为10.3 m A/cm2和4.09%,与纯P25相比,分别提高了38%和25%。
SrSnO3∶ Sm3＋down-converted powders were prepared by hydrothermal method with Sr（ NO3）2and NaSnO3 as raw materials. SrSnO3∶ Sm3＋/ TiO2 composite photoanode was used in dye-sensitized solar cells（ DSSC）. X-ray diffractometer（ XRD）,scanning electron microscope（ SEM）,energy spectrum analyzer（ EDS） and fluorescence spectrometer（ FL） were used to characterize SrSnO3∶ Sm3＋. The effects of SrSnO3∶ Sm3＋doping amount on the photoelectric properties of DSSC based on SrSnO3∶ Sm3＋/ TiO2 composite photoanode were explored. The results show that SrSnO3∶ Sm3＋of mixing rod,short columnar and particle morphology are prepared successfully byhydrothermal method. The as-prepared SrSnO3∶ Sm3＋can convert UV-light to yellow light（ 587 nm）and widen the spectra response range. With the increasing of SrSnO3∶ Sm3＋mass fraction in SrSnO3∶Sm3＋/ TiO2,the short current density of DSSC increases significantly. When the mass fraction of SrSnO3∶ Sm3＋is 3%,the short current density and photoelectric conversion efficiency are 10. 3 m A /cm2 and 4. 09%,increase by 38% and 25% respectively compared with the pure P25.
出处
《发光学报》
EI
CAS
CSCD
北大核心
2016年第7期786-792,共7页
Chinese Journal of Luminescence
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)资助
