SpringerOpen Newsletter

Receive periodic news and updates relating to SpringerOpen.

Open Access Nano Express

Controllable synthesis of flake-like Al-doped ZnO nanostructures and its application in inverted organic solar cells

Xi Fan, Guojia Fang*, Shishang Guo, Nishuang Liu, Huimin Gao, Pingli Qin, Songzhan Li, Hao Long, Qiao Zheng and Xingzhong Zhao

Author Affiliations

Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Department of Electronic Science and Technology, School of Physics and Technology, Wuhan University, Wuhan, 430072, People's Republic of China

For all author emails, please log on.

Nanoscale Research Letters 2011, 6:546  doi:10.1186/1556-276X-6-546

Published: 4 October 2011


Flake-like Al-doped ZnO (AZO) nanostructures including dense AZO nanorods were obtained via a low-temperature (100°C) hydrothermal process. By doping and varying Al concentrations, the electrical conductivity (σ) and morphology of the AZO nanostructures can be readily controlled. The effect of σ and morphology of the AZO nanostructures on the performance of the inverted organic solar cells (IOSCs) was studied. It presents that the optimized power conversion efficiency of the AZO-based IOSCs is improved by approximately 58.7% compared with that of un-doped ZnO-based IOSCs. This is attributed to that the flake-like AZO nanostructures of high σ and tunable morphology not only provide a high-conduction pathway to facilitate electron transport but also lead to a large interfacial area for exciton dissociation and charge collection by electrodes.

Al-doped ZnO; inverted organic solar cell; electrical conductivity; morphology