改进型溶胶-凝胶法制备粒径可调高染料吸附量TiO_2微球及其在染敏电池光散射层中的应用(英文)  

Size-Controlled Nanoporous TiO_2 Spheres with High Dye-Loading: Facile Synthesis and Application as Scattering Layers in Dye-Sensitized Solar Cells

作　　者：黄欢[1,2] 魏玉龙[1,2] 包春雄[1,2] 高皓[1,2] 于涛[1,2] 邹志刚[1,3] 

机构地区：[1]南京大学固体微结构物理国家重点实验室,南京210093 [2]南京大学物理学院环境材料与再生能源研究中心,南京210093 [3]南京大学材料科学与工程系,南京210093

出　　处：《无机化学学报》2013年第10期2169-2175,共7页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.11174129);江苏省自然科学基金(No.BK2011056,BE2012089);中央高校基本科研业务费专项资金(No.1116020406)资助项目

摘　　要：利用改进型的溶胶-凝胶法,制得了由锐钛矿相纳米颗粒组成的TiO2多孔微纳小球。通过调节前驱物浓度,合成出粒径可控的尺寸分别为100,175,225,475 nm的TiO2微纳小球,并通过电泳沉积法将合成出的小球作为光散射层引入到染料敏化太阳电池(DSSC)中。由于这种微纳小球在具备良好的光散射性能的同时也具备较高的染料吸附量,因此相较于基于纳米颗粒的单层结构的DSSC拥有更高的光电转换效率。通过比较分析,粒径尺寸为475 nm的微球作为光散射层的DSSC光电转换效率可以达到6.3%,较之于基于纳米颗粒的DSSC提高了30%。Anatase nanoporous TiO2 spheres were synthesized via a modified sol-gel method. By controlling the concentration of the precursor, size-controlled nanoporous TiO2 spheres with high dye-loading were achieved. The synthesized spheres with different sizes （100 nm, 175 nm, 225 nm, 475 nm） were used as scattering layers on a TiO2 nanoparticle film by electrophoresis deposition method to form bi-layered dye-sensitized solar ceils （DSSCs）. Scattering effect of the layers with different sized spheres was studied. It was proved that the 475nm-sized spheres showed optium light scattering effect. Due to the scattering effect, an overall photoelectric conversion efficiency of 6.3% has been achieved, a 30% increase compared with the nanopartiele-based photoanode.

关 键 词：粒径可控TiO2微纳小球 染料敏化太阳电池 散射层 改进型溶胶-凝胶法 

分 类 号：O614.411[理学—无机化学] TM914.4[理学—化学]