Effect of heat treatment on photoelectrochemical performance of hydrothermally synthesised Ag2S/ZnO nanorods arrays

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

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Low temperature hydrothermal method was used to produce a large surface area ZnO NRs on conductive glass. The same method was used to fabricate a photoelectrode of Ag2S quantum dots onto the nanorod arrays. Ag2S QDs/ZnO NRAs heterostructure was employed as photoanode in a standard 3-electrodes photoelectrochemical cell. A significant enhancement in the photoelectrochemical performance was observed for the Ag2S QDs/ZnO upon heat treatment 400 °C which displayed an impressive photoconversion efficiency of 4.08% by achieving ∼10-times higher compared to bare ZnO NRAs. This enhancement was attributed to the improved morphological structure, crystallinity and optical properties of the synthesised heterostructures.

Original languageEnglish
Pages (from-to)100-107
Number of pages8
JournalChemical Physics Letters
Volume710
DOIs
Publication statusPublished - 16 Oct 2018

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Nanorods
nanorods
Heterojunctions
heat treatment
Heat treatment
Photoelectrochemical cells
augmentation
Semiconductor quantum dots
crystallinity
Optical properties
quantum dots
optical properties
Glass
Electrodes
electrodes
glass
cells
Temperature

Keywords

  • AgS photoresponse
  • Heat treatment, ZnO nanorods
  • Hydrothermal deposition
  • Photoconversion efficiency

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Effect of heat treatment on photoelectrochemical performance of hydrothermally synthesised Ag2S/ZnO nanorods arrays. / Holi, Araa Mebdir; Zainal, Zulkarnain; Ayal, Asmaa Kadim; Chang, Sook Keng; Lim, Hong Ngee; Talib, Zainal Abidin; Yap, Chi Chin.

In: Chemical Physics Letters, Vol. 710, 16.10.2018, p. 100-107.

Research output: Contribution to journalArticle

Holi, Araa Mebdir ; Zainal, Zulkarnain ; Ayal, Asmaa Kadim ; Chang, Sook Keng ; Lim, Hong Ngee ; Talib, Zainal Abidin ; Yap, Chi Chin. / Effect of heat treatment on photoelectrochemical performance of hydrothermally synthesised Ag2S/ZnO nanorods arrays. In: Chemical Physics Letters. 2018 ; Vol. 710. pp. 100-107.
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AU - Chang, Sook Keng

AU - Lim, Hong Ngee

AU - Talib, Zainal Abidin

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