首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Hierarchically Structured ZnO Nanorods as an Efficient Photoanode for Dye‐Sensitized Solar Cells
Authors:Dr Wenqin Peng  Dr Liyuan Han  Dr Zhengming Wang
Institution:1. Photovoltaic Materials Unit, National Institute for Materials Science, Tsukuba, Ibaraki 305‐0047 (Japan);2. State Key Laboratory of Metal Matrix Composites, Shanghai Jiaotong University, Shanghai 200240 (P. R. China);3. Environmental Management Technology Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305‐8569 (Japan)
Abstract:Hierarchical ZnO nanorods composed of interconnected nanoparticles, which were synthesized by controlling precursor concentrations in a solvothermally assisted process, were exploited as photoanodes in dye‐sensitized solar cells (DSCs). The as‐prepared hierarchical nanorods showed greatly enhanced light scattering compared to ZnO nanoparticles for boosting light harvesting while maintaining sufficient dye‐adsorption capability. The charge‐transfer characteristics were studied by electrochemical impedance measurements, and reduced electron recombination and longer electron lifetime were observed for the ZnO nanorods. Photovoltaic characterization demonstrated that DSCs utilizing the hierarchical nanorods significantly improved the overall conversion efficiency by 34 % compared to nanoparticle‐based DSCs.
Keywords:energy conversion  nanoparticles  nanostructures  solar cells  zinc oxide
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号