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Open AccessArticle

Direct Growth of Flower-Shaped ZnO Nanostructures on FTO Substrate for Dye-Sensitized Solar Cells

1
Department of Chemistry, Faculty of Science and Arts, Najran University, Najran 11001, Saudi Arabia
2
Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran 11001, Saudi Arabia
3
New and Renewable Energy Material Development Center (NewREC), Chonbuk National University, Chonbuk, 54896, Korea
4
Department of Materials Science, University of Patras, 26504 Patras GR, Greece
5
Department of Physics, Faculty of Science and Arts, Najran University, Najran 11001, Saudi Arabia
6
National Institute of Advanced Industrial Science and Technology (AIST), 2266-98 Anagahora, Shimoshidami, Moriyama-ku, Nagoya 463-8560, Japan
7
Department of Chemistry, Integral University, Lucknow, Uttar Pradesh 226026, India
*
Author to whom correspondence should be addressed.
Crystals 2019, 9(8), 405; https://doi.org/10.3390/cryst9080405
Received: 27 May 2019 / Revised: 18 July 2019 / Accepted: 25 July 2019 / Published: 4 August 2019
(This article belongs to the Special Issue Zinc Oxide Nanomaterials and Based Devices)
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Abstract

The proposed work reports that ZnO nanoflowers were grown on fluorine-doped tin oxide (FTO) substrates via a solution process at low temperature. The high purity and well-crystalline behavior of ZnO nanoflowers were established by X-ray diffraction. The morphological characteristics of ZnO nanoflowers were clearly revealed that the grown flower structures were in high density with 3D floral structure comprising of small rods assembled as petals. Using UV absorption and Raman spectroscopy, the optical and structural properties of the ZnO nanoflowers were studied. The photoelectrochemical properties of the ZnO nanoflowers were studied by utilizing as a photoanode for the manufacture of dye-sensitized solar cells (DSSCs). The fabricated DSSC with ZnO nanoflowers photoanode attained reasonable overall conversion efficiency of ~1.40% and a short-circuit current density (JSC) of ~4.22 mA cm−2 with an open circuit voltage (VOC) of 0.615 V and a fill factor (FF) of ~0.54. ZnO nanostructures have given rise to possible utilization as an inexpensive and efficient photoanode materials for DSSCs. View Full-Text
Keywords: Flower-shaped ZnO structures; FTO substrate; Dye-sensitized solar cells: Photovoltaics Flower-shaped ZnO structures; FTO substrate; Dye-sensitized solar cells: Photovoltaics
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Umar, A.; Akhtar, M.S.; Almas, T.; Ibrahim, A.A.; Al-Assiri, M.S.; Masuda, Y.; Rahman, Q.I.; Baskoutas, S. Direct Growth of Flower-Shaped ZnO Nanostructures on FTO Substrate for Dye-Sensitized Solar Cells. Crystals 2019, 9, 405.

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