Effects of the Morphology of the Electrode Nanostructures on the Performance of Dye-Sensitized Solar Cells

作     者：Nicholas N.Bwana 

作者机构：Department of Computer ScienceMathematicsand PhysicsThe University of the West IndiesCave Hill CampusSt.MichaelBarbados 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2008年第1卷第6期

页      面：483-489页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

主　　题：Electrode nanorods nanotubules sintered efficiency 

摘      要：This article reports the performances of dye-sensitized solar cells based on different working electrode structures,namely(1)highly ordered arrays of TiO_(2)nanorods,(2)highly ordered arrays of TiO_(2)nanotubules of different wall thicknesses,and(3)sintered TiO_(2)*** though highest short-circuit current density was achieved with systems based on TiO_(2)nanotubules,the most effi cient cells were those based on ordered arrays of TiO_(2)*** is probably due to the higher open-circuit photovoltage values attained with TiO_(2)nanorods compared with TiO_(2)*** nanorods are thicker than the nanotubules and therefore the injected electrons,stored in the trap states of the inner TiO_(2)particles,are shielded from recombination with holes in the redox electrolyte at *** high short-circuit photocurrent densities seen in the ordered TiO_(2)systems can be explained by the fact that,in contrast to the sintered nanoparticles,the parallel and vertical orientation of the ordered nanostructures provide well defi ned electron percolation paths and thus signifi cantly reduce the diffusion distance and time constant.