染料敏化太阳能电池Eu^(3+),Sm^(3+)掺杂TiO_2下转换光阳极的制备及性能  

Synthesis and Properties of Eu^(3+),Sm^(3+)-doped TiO_2 Down-conversion Photoanode for Dye-sensitized Solar Cells

作　　者：秦艺颖 胡志强[1] 张普涛 郝洪顺[1] 刘贵山[1] 

机构地区：[1]大连工业大学新能源材料研究所,辽宁大连116034

出　　处：《光子学报》2016年第6期142-148,共7页Acta Photonica Sinica

基　　金：国家高技术研究发展计划(No.2006AA05Z417);大连市科技平台建设项目(No.2010-354)资助~~

摘　　要：用溶胶-凝胶法制备了Eu,Sm共掺TiO_2粉体,将其与P25复合,制备了下转换光阳极,用于染料敏化太阳能电池,利用其下转换特性提高电池的光电性能.用荧光光谱对粉体的发光性能进行表征,荧光光谱显示:Eu,Sm共掺TiO_2粉体受463nm光激发可以发射550~700nm的可见光,具有下转换功能.当Eu^(3+)的摩尔掺杂含量为1%,Sm^(3+)的摩尔含量为0.5%时,制备的Eu^(3+),Sm^(3+)共掺下转换光阳极,短路电流达到14.08mA/cm2,与使用Eu^(3+)掺杂TiO_2的下转换光阳极电池相比,提高了32.08%,转换效率也达到5.29%.Eu,Sm-codoped TiO2 nanocrystals were synthesized by the sol-gel method,and the downconversion photoanode were prepared with the matrix of P25 doped with the as-prepared Eu,Sm-codoped TiO2 powders,which was introduced into the dye-sensitized solar cell.The photoelectric properties were enhanced due to the down-conversion feature of Eu,Sm-codoped TiO2.The luminescent properties of powders were characterized by the fluorescence spectroscopy.Fluorescence spectroscopy results indicate that the Eu,Sm-codoped TiO2 powders possess down-conversion feature of converting ultraviolet light to550～700nm visible light exposed to 463 nm ultraviolet light.The short circuit current density of the dyesensitized solar cell with aphotoanode doped with 1 mol% Eu^3＋and 0.5 mol% Sm^3＋reaches to14.08mA/cm2,which is 32.08% higher than that with Eu^3＋doped TiO2 photoanode,and the efficiency is also reached to 5.29 %.

关 键 词：染料敏化太阳能电池 溶胶-凝胶法 TiO2:Eu3+ Sm3+ 稀土元素 下转换 短路电流 转换效率 光电性能 

分 类 号：TB321[一般工业技术—材料科学与工程] TM914.4[电气工程—电力电子与电力传动]