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Fine designing 3-dimensional ZnO nanowalls with TiO2 nanoparticles for DSSC application

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Abstract

In this research, we report a low-cost low-temperature hydrothermal technique for covering 3-dimensional (3-D) electrodeposited ZnO nanowall with thin layer of aggregated TiO2 nanoparticles on FTO substrate for dye-sensitized solar cell application, in a way that morphology and crystal structure of ZnO nanowalls were preserved. Comparing photovoltaic characteristics of devices with and without TiO2-coating layer, it was revealed that the 3-D ZnO/TiO2-nanostructured photoanode resulted in a 35 % cell performance improved mostly because of enhancement of short-circuit current density (J sc) and open-circuit voltage (V oc). The XRD pattern showed that 3-D ZnO nanowalls and TiO2 compose of wurtzite and anatase phases, respectively.

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Acknowledgments

The first author acknowledges M. Jafarzadegan, A. Ebrahimi, and A. Yousefi PHD students of Tarbiat Modares University. The First author also appreciates Dr. Samadpoor for his kind helps and suggestions. The authors also appreciate Dr. S. Javadian Farzaneh and Dr. N. Alizadeh Motlagh faculties of Tarbiat Modares University for their supports.

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Authors and Affiliations

  1. Department of Physics, Faculty of Basic Science, Tarbiat Modares University, Kargar Shomali Street, Tehran, Iran

    Sajad Saghaye Polkoo, Esmaiel Saievar-Iranizad & Elham Bayatloo

Authors
  1. Sajad Saghaye Polkoo
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  2. Esmaiel Saievar-Iranizad
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  3. Elham Bayatloo
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Correspondence to Esmaiel Saievar-Iranizad.

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Polkoo, S.S., Saievar-Iranizad, E. & Bayatloo, E. Fine designing 3-dimensional ZnO nanowalls with TiO2 nanoparticles for DSSC application. Appl. Phys. A 119, 1269–1276 (2015). https://doi.org/10.1007/s00339-015-9091-6

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  • DOI: https://doi.org/10.1007/s00339-015-9091-6

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