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Erschienen in: Journal of Sol-Gel Science and Technology 1/2018

07.11.2017 | Original Paper: Characterization methods of sol-gel and hybrid materials

Hydrothermal growth of undoped and boron doped ZnO nanorods as a photoelectrode for solar water splitting applications

verfasst von: Akash Sharma, Mohua Chakraborty, R. Thangavel, G. Udayabhanu

Erschienen in: Journal of Sol-Gel Science and Technology | Ausgabe 1/2018

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Abstract

Undoped and boron-doped ZnO nanorods (NRs) were grown on ITO glass substrates by using hydrothermal techniques. The as grown nanorods were investigated by using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), UV–visible spectroscopy, and photoelectrochemical study. XRD spectra reveal the confirmations regarding the hexagonal wurtzite structure along with preferential orientation (002). The observation of (002) peak shows a red shift. The average size distribution of NRs in doped and undoped sample ranges from 169 to 191 nm. The absorption spectra clearly revealed the band gap tunability feature of the samples with a change in doping percentage. Photoluminescence spectra clearly indicate the presence of oxygen defects. Photocurrent density as high as ∼0.622 and 2.6 mA/cm2 were obtained for undoped and 6% B-doped ZnO NRs arrays respectively, at +0.44 V vs. Ag/AgCl electrode under visible light AM 1.5 G (100 mW/cm2) in 0.1 M electrolyte solutions of NaOH. More enhancement in photoconversion efficiency (PCE) from 0.491 to 2.054% was observed for undoped ZnO NRs and optimum 6% B-doped ZnO in 0.1 M NaOH electrolyte solution.

Graphical abstract

https://static-content.springer.com/image/art%3A10.1007%2Fs10971-017-4536-3/MediaObjects/10971_2017_4536_Figa_HTML.gif

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Metadaten
Titel
Hydrothermal growth of undoped and boron doped ZnO nanorods as a photoelectrode for solar water splitting applications
verfasst von
Akash Sharma
Mohua Chakraborty
R. Thangavel
G. Udayabhanu
Publikationsdatum
07.11.2017
Verlag
Springer US
Erschienen in
Journal of Sol-Gel Science and Technology / Ausgabe 1/2018
Print ISSN: 0928-0707
Elektronische ISSN: 1573-4846
DOI
https://doi.org/10.1007/s10971-017-4536-3

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