标题：Annealing effect on photovoltaic performance of CdSe quantum-dots- sensitized TiO2nanorod solar cells
作者：Li, Yitan ;Wei, Lin ;Zhang, Ruizi ;Chen, Yanxue ;Jiao, Jun
作者机构：[Li, Yitan ;Zhang, Ruizi ;Chen, Yanxue ] School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;[Jiao, 更多
来源：Journal of Nanomaterials
摘要：Large area rutile TiO2nanorod arrays were grown on F:SnO2(FTO) conductive glass using a hydrothermal method at low temperature. CdSe quantum dots (QDs) were deposited onto single-crystalline TiO2nanorod arrays by a chemical bath deposition (CBD) method to make a photoelectrode. The solar cell was assembled using a CdSe-TiO2nanostructure as the photoanode and polysulfide solution as the electrolyte. The annealing effect on optical and photovoltaic properties of CdSe quantum-dots-sensitized TiO2nanorod solar cells was studied systematically. A significant change of the morphology and a regular red shift of band gap of CdSe nanoparticles were observed after annealing treatment. At the same time, an improved photovoltaic performance was obtained for quantum-dots-sensitized solar cell using the annealed CdSe-TiO2nanostructure electrode. The power conversion efficiency improved from 0.59% to 1.45% as a consequence of the annealing effect. This improvement can be explained by considering the changes in the morphology, the crystalline quality, and the optical properties caused by annealing treatment. © 2012 Yitan Li et al.