光子学报, 2016, 45 (6): 0616002, 网络出版: 2016-07-26
染料敏化太阳能电池Eu3+,Sm3+掺杂TiO2下转换光阳极的制备及性能
Synthesis and Properties of Eu3+, Sm3+-doped TiO2 Down-conversion Photoanode for Dye-sensitized Solar Cells
染料敏化太阳能电池 溶胶-凝胶法 稀土元素 下转换 短路电流 转换效率 光电性能 Dye-sensitized solar cell Sol-gel TiO2:Eu3+ TiO2:Eu3+ Sm3+ Sm3+ Rare earth elements Down-conversion Short circuit currents Conversion Photoelectric performance
摘要
用溶胶-凝胶法制备了Eu,Sm共掺TiO2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TiO2粉体受463 nm光激发可以发射550~700 nm的可见光,具有下转换功能.当Eu3+的摩尔掺杂含量为1%,Sm3+的摩尔含量为0.5%时,制备的Eu3+,Sm3+共掺下转换光阳极,短路电流达到14.08 mA/cm2,与使用Eu3+掺杂TiO2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%.
Abstract
Eu,Sm-codoped TiO2 nanocrystals were synthesized by the sol-gel method, and the down-conversion 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 to 550~700 nm visible light exposed to 463nm ultraviolet light. The short circuit current density of the dye-sensitized solar cell with a photoanode doped with 1 mol% Eu3+ and 0.5 mol% Sm3+ reaches to 14.08 mA/cm2, which is 32.08% higher than that with Eu3+ doped TiO2 photoanode, and the efficiency is also reached to 5.29 %.
秦艺颖, 胡志强, 张普涛, 郝洪顺, 刘贵山. 染料敏化太阳能电池Eu3+,Sm3+掺杂TiO2下转换光阳极的制备及性能[J]. 光子学报, 2016, 45(6): 0616002. QIN Yi-ying, HU Zhi-qiang, ZHANG Pu-tao, HAO Hong-shun, LIU Gui-shan. Synthesis and Properties of Eu3+, Sm3+-doped TiO2 Down-conversion Photoanode for Dye-sensitized Solar Cells[J]. ACTA PHOTONICA SINICA, 2016, 45(6): 0616002.