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Journal of Electrochemistry ›› 2017, Vol. 23 ›› Issue (2): 226-237.doi: 10.13208/j.electrochem.161251

• Special Issue in Honor of Professor Zhaowu Tian on His 90th Birthday • Previous Articles     Next Articles

Rutile TiONanosheet Arrays Planted on Magnetron Sputtered Ti Metal Layers for Efficient Perovskite Solar Cells

Nang Zhang1a, Meidan Ye1a, Xiaoru Wen1, Changjian Lin1,2*   

  1. 1.State Key Laboratory of Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China  2.Research Institute for Biomimetics and Soft Matter, Fujian Provincial Key Lab for Soft Functional Materials Research, Department of Physics, College of Physical Science and Technology, Xiamen University, Xiamen 361005
  • Received:2017-02-22 Revised:2017-03-16 Online:2017-04-28 Published:2017-03-20
  • Contact: Changjian Lin E-mail:cjlin@xmu.edu.cn
  • Supported by:

    The authors gratefully acknowledge the financial supports from the National Nature Science Foundation of China (21621091,21503177, 21321062), the National Basic Research Program of China (2012CB932900), the Fundamental Research Funds for the Central Universities of China (20720150031), and the project of 111 Program (B16029).

Abstract:

In this work, vertical rutile titanium oxide (TiO2) nanosheet arrays (NSAs) were firstly hydrothermally grown on the top of thin titanium (Ti) metal layers which were loaded on fluorine doped tin oxide (FTO) substrates by the DF magnetron sputtering deposition method. After an annealing post-treatment, the Ti metal layers were transformed into the compact TiO2 layers with a strong connection between the rutile TiO2 NSAs and the FTO substrates. For comparison, the rutile TiO2 NSAs were similarly planted over two compact TiO2 layers fabricated through atomic layer deposition (ALD) and spin coating (SC) methods, respectively. When served as the scaffold layers in perovskite solar cells (PSCs), the Ti-based TiO2 NSAs showed the best cell performance due to the high quality of the TiO2 NSA nanostructure and excellent interface contacts among the TiO2 NSAs/TiO2 compact layers/FTO substrate interface. Significantly, a highest cell efficiency of 11.82% was obtained after careful modification on the organization procedures for the PSC devices.

Key words: Ti metal layer, TiO2 , nanosheet arrays, perovskite solar cells

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