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Title: Low temperature grown ZnO@TiO{sub 2} core shell nanorod arrays for dye sensitized solar cell application

Abstract

High aspect ratio ZnO nanorod arrays were synthesized on fluorine-doped tin oxide glasses via a low temperature solution method. By adjusting the growth condition and adding polyethylenimine, ZnO nanorod arrays with tunable length were successfully achieved. The ZnO@TiO{sub 2} core shells structures were realized by a fast growth method of immersion into a (NH{sub 4}){sub 2}·TiF{sub 6} solution. Transmission electron microscopy, X-ray Diffraction and energy dispersive X-ray measurements all confirmed the existence of a titania shell uniformly covering the ZnO nanorod's surface. Results of solar cell testing showed that addition of a TiO{sub 2} shell to the ZnO nanorod significantly increased short circuit current (from 4.2 to 5.2 mA/cm{sup 2}), open circuit voltage (from 0.6 V to 0.8 V) and fill factor (from 42.8% to 73.02%). The overall cell efficiency jumped from 1.1% for bare ZnO nanorod to 3.03% for a ZnO@TiO{sub 2} core shell structured solar cell with a 18–22 nm shell thickness, a nearly threefold increase. - Graphical abstract: The synthesis process of coating TiO{sub 2} shell onto ZnO nanorod core is shown schematically. A thin, uniform, and conformal shell had been grown on the surface of the ZnO core after immersing in the (NH{sub 4}){sub 2}·TiF{sub 6}more » solution for 5–15 min. - Highlights: • ZnO@TiO{sub 2} core shell nanorod has been grown on FTO substrate using low temperature solution method. • TEM, XRD, EDX results confirmed the existing of titana shell, uniformly covered rod's surface. • TiO{sub 2} shell suppressed recombination, demonstrated significant enhancement in cell's efficiency. • Core shell DSSC's efficiency achieved as high as 3.03%, 3 times higher than that of ZnO nanorods.« less

Authors:
 [1]; ;  [2]
  1. Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology, and Research), 3 Research Link, 117602 Singapore (Singapore)
  2. Department of Materials Science and Engineering (DMSE), Faculty of Engineering National University of Singapore (NUS) BLK E3A, #04-10, 7 Engineering Drive 1, Singapore 117574 (Singapore)
Publication Date:
OSTI Identifier:
22334238
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 214; Conference: 7. international conference on materials for advanced technologies, Singapore (Singapore), 30 Jun - 5 Jul 2013; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 77 NANOSCIENCE AND NANOTECHNOLOGY; EFFICIENCY; NANOSTRUCTURES; SOLAR CELLS; TIN OXIDES; TITANIUM OXIDES; TRANSMISSION ELECTRON MICROSCOPY; X RADIATION; X-RAY DIFFRACTION; ZINC OXIDES

Citation Formats

Goh, Gregory Kia Liang, Le, Hong Quang, E-mail: lehq@imre.a-star.edu.sg, Huang, Tang Jiao, and Hui, Benjamin Tan Tiong. Low temperature grown ZnO@TiO{sub 2} core shell nanorod arrays for dye sensitized solar cell application. United States: N. p., 2014. Web. doi:10.1016/J.JSSC.2013.11.035.
Goh, Gregory Kia Liang, Le, Hong Quang, E-mail: lehq@imre.a-star.edu.sg, Huang, Tang Jiao, & Hui, Benjamin Tan Tiong. Low temperature grown ZnO@TiO{sub 2} core shell nanorod arrays for dye sensitized solar cell application. United States. https://doi.org/10.1016/J.JSSC.2013.11.035
Goh, Gregory Kia Liang, Le, Hong Quang, E-mail: lehq@imre.a-star.edu.sg, Huang, Tang Jiao, and Hui, Benjamin Tan Tiong. 2014. "Low temperature grown ZnO@TiO{sub 2} core shell nanorod arrays for dye sensitized solar cell application". United States. https://doi.org/10.1016/J.JSSC.2013.11.035.
@article{osti_22334238,
title = {Low temperature grown ZnO@TiO{sub 2} core shell nanorod arrays for dye sensitized solar cell application},
author = {Goh, Gregory Kia Liang and Le, Hong Quang, E-mail: lehq@imre.a-star.edu.sg and Huang, Tang Jiao and Hui, Benjamin Tan Tiong},
abstractNote = {High aspect ratio ZnO nanorod arrays were synthesized on fluorine-doped tin oxide glasses via a low temperature solution method. By adjusting the growth condition and adding polyethylenimine, ZnO nanorod arrays with tunable length were successfully achieved. The ZnO@TiO{sub 2} core shells structures were realized by a fast growth method of immersion into a (NH{sub 4}){sub 2}·TiF{sub 6} solution. Transmission electron microscopy, X-ray Diffraction and energy dispersive X-ray measurements all confirmed the existence of a titania shell uniformly covering the ZnO nanorod's surface. Results of solar cell testing showed that addition of a TiO{sub 2} shell to the ZnO nanorod significantly increased short circuit current (from 4.2 to 5.2 mA/cm{sup 2}), open circuit voltage (from 0.6 V to 0.8 V) and fill factor (from 42.8% to 73.02%). The overall cell efficiency jumped from 1.1% for bare ZnO nanorod to 3.03% for a ZnO@TiO{sub 2} core shell structured solar cell with a 18–22 nm shell thickness, a nearly threefold increase. - Graphical abstract: The synthesis process of coating TiO{sub 2} shell onto ZnO nanorod core is shown schematically. A thin, uniform, and conformal shell had been grown on the surface of the ZnO core after immersing in the (NH{sub 4}){sub 2}·TiF{sub 6} solution for 5–15 min. - Highlights: • ZnO@TiO{sub 2} core shell nanorod has been grown on FTO substrate using low temperature solution method. • TEM, XRD, EDX results confirmed the existing of titana shell, uniformly covered rod's surface. • TiO{sub 2} shell suppressed recombination, demonstrated significant enhancement in cell's efficiency. • Core shell DSSC's efficiency achieved as high as 3.03%, 3 times higher than that of ZnO nanorods.},
doi = {10.1016/J.JSSC.2013.11.035},
url = {https://www.osti.gov/biblio/22334238}, journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = ,
volume = 214,
place = {United States},
year = {Sun Jun 01 00:00:00 EDT 2014},
month = {Sun Jun 01 00:00:00 EDT 2014}
}