Preparation and characterization of ZnO/ZnAl 2 O 4 -mixed metal oxides for dye-sensitized photodetector using Zn/Al-layered double hydroxide as precursor

Ethar Yahya Salih, Mohd Faizul Mohd Sabri, Sin Tee Tan, Khaulah Sulaiman, Mohd Zobir Hussein, Suhana Mohd Said, Chi Chin Yap

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In this article, a simple new technique has been developed for the preparation of ZnO/ZnAl 2 O 4 -mixed metal oxide (MMO) as anode materials for visible light dye-sensitized (DS) photodetector using Zn/Al-layered double hydroxide (LDH) as precursor. Subsequently, a detailed correlation between the structural properties of the prepared samples and the photo-responsive behavior of the fabricated DS photodetectors was elucidated. Specifically, it is evidenced that a high surface area of the prepared mesoporous MMO anode materials exhibit excellent dye absorptivity and thus facilitate free electron transfer and increase the photocurrent in the fabricated DS photodetector. A significant bathochromic shift was observed in the optical energy of the prepared MMO samples under the increment of molar ratio, providing a short electron transfer pathway in the optimized Z7A DS photodetector, which in turn demonstrated photo-responsivity and photo-detectivity of 6 mA/W and 1.7 × 10 +10 Jones, respectively. This work presents an alternative approach for the design of an eco-friendly MMO-based DS photodetector. [Figure not available: see fulltext.].

Original languageEnglish
Article number55
JournalJournal of Nanoparticle Research
Volume21
Issue number3
DOIs
Publication statusPublished - 1 Mar 2019

Fingerprint

Photodetector
mixed oxides
Photodetectors
Dyes
Precursor
Oxides
hydroxides
metal oxides
photometers
Preparation
Coloring Agents
Metals
dyes
preparation
Electron Transfer
Anodes
electron transfer
anodes
Responsivity
Electrons

Keywords

  • Dye-sensitized photodetector
  • Layered double hydroxide
  • Mixed metal oxide
  • Nanostructures
  • Photo-responsivity

ASJC Scopus subject areas

  • Bioengineering
  • Atomic and Molecular Physics, and Optics
  • Chemistry(all)
  • Modelling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Preparation and characterization of ZnO/ZnAl 2 O 4 -mixed metal oxides for dye-sensitized photodetector using Zn/Al-layered double hydroxide as precursor . / Salih, Ethar Yahya; Sabri, Mohd Faizul Mohd; Tan, Sin Tee; Sulaiman, Khaulah; Hussein, Mohd Zobir; Said, Suhana Mohd; Yap, Chi Chin.

In: Journal of Nanoparticle Research, Vol. 21, No. 3, 55, 01.03.2019.

Research output: Contribution to journalArticle

Salih, Ethar Yahya ; Sabri, Mohd Faizul Mohd ; Tan, Sin Tee ; Sulaiman, Khaulah ; Hussein, Mohd Zobir ; Said, Suhana Mohd ; Yap, Chi Chin. / Preparation and characterization of ZnO/ZnAl 2 O 4 -mixed metal oxides for dye-sensitized photodetector using Zn/Al-layered double hydroxide as precursor In: Journal of Nanoparticle Research. 2019 ; Vol. 21, No. 3.
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