Synthesis and characterization of ZnO/TiO2 composite core/shell nanorod arrays by sol�?�gel method for organic solar cell applications

Bulletin of materials science

K Ahmadi¹  K Mirabbaszadeh³  Ali Abdolahzadeh Ziabari⁴  A Ahadpour Shal² 

[1] Department of Physics, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran$$Nano Research Lab, Lahijan Branch, Islamic Azad University, P.O. Box 1616, Lahijan, Iran$$Department of Physics, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, IranDepartment of Physics, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran$$Nano Research Lab, Lahijan Branch, Islamic Azad University, P.O. Box 1616, Lahijan, Iran$$Nano Research Lab, Lahijan Branch, Islamic Azad University, P.O. Box 1616, Lahijan, IranDepartment of Physics, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran$$Nano Research Lab, Lahijan Branch, Islamic Azad University, P.O. Box 1616, Lahijan, Iran$$;Department of Electronic Engineering, Faculty of Engineering, Lahijan Branch, Islamic Azad University, P.O. Box 1616, Lahijan, Iran$$Department of Electronic Engineering, Faculty of Engineering, Lahijan Branch, Islamic Azad University, P.O. Box 1616, Lahijan, IranDepartment of Electronic Engineering, Faculty of Engineering, Lahijan Branch, Islamic Azad University, P.O. Box 1616, Lahijan, Iran$$;Department of Physics, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran$$Department of Physics, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, IranDepartment of Physics, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran$$;Nano Research Lab, Lahijan Branch, Islamic Azad University, P.O. Box 1616, Lahijan, Iran$$Nano Research Lab, Lahijan Branch, Islamic Azad University, P.O. Box 1616, Lahijan, IranNano Research Lab, Lahijan Branch, Islamic Azad University, P.O. Box 1616, Lahijan, Iran$$

关键词: Organic solar cells;    ZnO/TiO2 core/shell;    nanorod arrays;    solâ€�?�gel.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

ZnO/TiO₂ core/shell nanorod arrays were deposited on indium tin oxide (ITO) substrate via a facile solâ€�?�gel dip-coating process. Effects of solution pH for ZnO, annealing temperature, growth time and temperature on the physical properties of nanorods have been investigated. X-ray diffraction (XRD) analysis and scanning electron microscopy (SEM) were employed to characterize the structural and morphological properties of the prepared composite nanorods. XRD result revealed wurtzite structure of ZnO with a mixed anatase and rutile structure phase for TiO₂. Energy-dispersive X-ray (EDX) and UVâ€�?�vis spectroscopy were used to study the chemical composition and optical properties of the films, respectively. Electrical resistivity of the films was also investigated. The optical and electrical properties of the bare TiO₂ thin film and core/shell composite were compared together. The results showed that owing to smaller band gap and lower resistivity, the core/shell structure as an electron transport layer for inverted photovoltaic devices is more suitable than bare TiO₂ thin film.

【 授权许可】

Unknown