Effect of hexamethylenetetramine on the properties of electrodeposited ZnO thin films for dye sensitized solar cell applications

Effect of hexamethylenetetramine on the properties of electrodeposited ZnO thin films for dye... Zinc oxide (ZnO) thin films were obtained on fluorine doped tin oxide substrates by pyrolyzing the electrodeposited zinc hydroxide chloride thin films. The effect of hexamethylenetetramine (HMTA) concentrations on the structural, morphological, vibrational and optical properties was investigated. The ZnO growth orientation is changed from (101) to (002) plane as the HMTA concentrations get increased from 0 to 9 mM. The well-defined hexagonal nanorods and nanowires structures are observed for ZnO thin films deposited in the absence and presence of HMTA. The increase in intensity of E2 (high) vibrational mode, near band edge emission and UV absorbance confirms the ZnO nanowires synthesized in the solution containing 9 mM HMTA having better crystallinity, lesser atomic defects and higher dye loading, respectively. The efficiency of dye sensitized solar cells (DSSCs) based on nanorods and nanowires synthesized in the solutions containing 0 and 9 mM HMTA is 0.36 and 1.02%, respectively. The DSSC based on nanowires photoanode has a higher R rec, τ n, σ n and L n than another DSSC. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Materials Science: Materials in Electronics Springer Journals

Effect of hexamethylenetetramine on the properties of electrodeposited ZnO thin films for dye sensitized solar cell applications

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Publisher
Springer US
Copyright
Copyright © 2018 by Springer Science+Business Media, LLC, part of Springer Nature
Subject
Materials Science; Optical and Electronic Materials; Characterization and Evaluation of Materials
ISSN
0957-4522
eISSN
1573-482X
D.O.I.
10.1007/s10854-018-9402-8
Publisher site
See Article on Publisher Site

Abstract

Zinc oxide (ZnO) thin films were obtained on fluorine doped tin oxide substrates by pyrolyzing the electrodeposited zinc hydroxide chloride thin films. The effect of hexamethylenetetramine (HMTA) concentrations on the structural, morphological, vibrational and optical properties was investigated. The ZnO growth orientation is changed from (101) to (002) plane as the HMTA concentrations get increased from 0 to 9 mM. The well-defined hexagonal nanorods and nanowires structures are observed for ZnO thin films deposited in the absence and presence of HMTA. The increase in intensity of E2 (high) vibrational mode, near band edge emission and UV absorbance confirms the ZnO nanowires synthesized in the solution containing 9 mM HMTA having better crystallinity, lesser atomic defects and higher dye loading, respectively. The efficiency of dye sensitized solar cells (DSSCs) based on nanorods and nanowires synthesized in the solutions containing 0 and 9 mM HMTA is 0.36 and 1.02%, respectively. The DSSC based on nanowires photoanode has a higher R rec, τ n, σ n and L n than another DSSC.

Journal

Journal of Materials Science: Materials in ElectronicsSpringer Journals

Published: Jun 6, 2018

References

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