Effect of hydrothermal growth time on ZnO nanorod arrays photoelectrode performance

Araa Mebdir Holi, Zulkarnain Zainal, Zainal Abidin Talib, Hong Ngee Lim, Chi Chin Yap, Sook Keng Chang, Asmaa Kadim Ayal

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

High density and vertically aligned zinc oxide nanorod arrays (ZnO NRs) have been prepared directly on indium-doped tin oxide (ITO) substrates via two-steps preparation: sol-gel spin coating and hydrothermal process. The nanostructured ZnO was characterized for its morphology, crystalline structure and optical properties by using field emission scanning electron microscopy (FESEM), X-ray diffractometry, and ultraviolet-visible spectroscopy respectively. In addition, the photoeletrochemical (PEC) properties were investigated through photocurrent measurements. The ZnO NRs/ITO had wurtzite-structured (hexagonal) ZnO and preferred growth along (0001) direction. When the growth time was 4 h, ZnO NRs/ITO showed impressive photoresponse. The PEC analysis verified that the ZnO NRs gave better photocurrent response and photoconversion efficiency with approximately 42 times greater than seed layer.

Original languageEnglish
Pages (from-to)11111-11118
Number of pages8
JournalOptik
Volume127
Issue number23
DOIs
Publication statusPublished - 1 Dec 2016

Fingerprint

Zinc Oxide
Zinc oxide
Nanorods
zinc oxides
nanorods
Indium
Tin oxides
tin oxides
indium
Photocurrents
photocurrents
Ultraviolet visible spectroscopy
Spin coating
wurtzite
Field emission
X ray diffraction analysis
Sol-gels
Seed
coating
seeds

Keywords

  • Hydrothermal deposition
  • Photoconversion efficiency
  • Photoelectrode
  • Photoresponse
  • ZnO nanorod arrays

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Cite this

Holi, A. M., Zainal, Z., Talib, Z. A., Lim, H. N., Yap, C. C., Chang, S. K., & Ayal, A. K. (2016). Effect of hydrothermal growth time on ZnO nanorod arrays photoelectrode performance. Optik, 127(23), 11111-11118. https://doi.org/10.1016/j.ijleo.2016.09.015

Effect of hydrothermal growth time on ZnO nanorod arrays photoelectrode performance. / Holi, Araa Mebdir; Zainal, Zulkarnain; Talib, Zainal Abidin; Lim, Hong Ngee; Yap, Chi Chin; Chang, Sook Keng; Ayal, Asmaa Kadim.

In: Optik, Vol. 127, No. 23, 01.12.2016, p. 11111-11118.

Research output: Contribution to journalArticle

Holi, AM, Zainal, Z, Talib, ZA, Lim, HN, Yap, CC, Chang, SK & Ayal, AK 2016, 'Effect of hydrothermal growth time on ZnO nanorod arrays photoelectrode performance', Optik, vol. 127, no. 23, pp. 11111-11118. https://doi.org/10.1016/j.ijleo.2016.09.015
Holi, Araa Mebdir ; Zainal, Zulkarnain ; Talib, Zainal Abidin ; Lim, Hong Ngee ; Yap, Chi Chin ; Chang, Sook Keng ; Ayal, Asmaa Kadim. / Effect of hydrothermal growth time on ZnO nanorod arrays photoelectrode performance. In: Optik. 2016 ; Vol. 127, No. 23. pp. 11111-11118.
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