High conversion efficiency of pristine TiO_2 nanotube arrays based dye-sensitized solar cells  

作　　者：WANG ShangHua TAN WeiWei ZHANG JingBo LIN Yuan 

机构地区：[1]Beijing National Laboratory for Molecular Sciences,Key Laboratory of Photochemistry,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China [2]Graduate School of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Chinese Science Bulletin》2012年第8期864-868,共5页

基　　金：supported by the National High Technology Research and Development Program of China (2007AA05Z439);the National Basic Research Program of China (2006CB202605);the National Natural Science Foundation of China (20973183);the Foundation of Chinese Academy of Sciences (KJCX2-YW-386-2)

摘　　要：We prepared highly-ordered titanium dioxide nanotube arrays (TNAs) by anodizing Ti foils in F-containing electrolytes.The crystalline nature and morphology of the TNAs were studied using X-ray diffraction patterns and scanning electron microscopy.We found the morphology of TNAs affects the light-to-electricity conversion efficiency (η) of dye-sensitized solar cells (DSSCs).The efficiency of DSSCs reached 5.95% under the condition of light illuminated from the counter electrode.The high efficiency of TNA-based DSSCs was attributed to the neat top surface of TNAs,which allows more dye molecule loading on the surface of the TiO 2 nanotubes,and fewer electron recombination centers and a low interface resistance of integrated TNAs.We prepared highly-ordered titanium dioxide nanotube arrays （TNAs） by anodizing Ti foils in F-containing electrolytes. The crystalline nature and morphology of the TNAs were studied using X-ray diffraction patterns and scanning electron microscopy. We found the morphology of TNAs affects the light-to-electricity conversion efficiency （17） of dye-sensitized solar cells （DSSCs）. The efficiency of DSSCs reached 5.95% under the condition of light illuminated from the counter electrode. The high efficiency of TNA-based DSSCs was attributed to the neat top surface of TNAs, which allows more dye molecule loading on the surface of the TiO2 nanotubes, and fewer electron recombination centers and a low interface resistance of integrated TNAs.

关 键 词：染料敏化太阳能电池 TIO2纳米管 纳米管阵列 转换效率 扫描电子显微镜 结晶技术 阳极氧化 二氧化钛 

分 类 号：TM914.4[电气工程—电力电子与电力传动] TB383[一般工业技术—材料科学与工程]