Preparation and characterization of ZnO/ZnAl2O4-mixed metal oxides for dye-sensitized photodetector using Zn/Al-layered double hydroxide as precursor

Salih, Ethar Yahya and Sabri, Mohd Faizul Mohd and Tan, Sin Tee and Sulaiman, Khaulah and Hussein, Mohd Zobir and Said, Suhana Mohd and Yap, Chi Chin (2019) Preparation and characterization of ZnO/ZnAl2O4-mixed metal oxides for dye-sensitized photodetector using Zn/Al-layered double hydroxide as precursor. Journal of Nanoparticle Research, 21 (3). p. 55. ISSN 1388-0764

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Official URL: https://doi.org/10.1007/s11051-019-4501-x

Abstract

In this article, a simple new technique has been developed for the preparation of ZnO/ZnAl2O4-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.]. © 2019, Springer Nature B.V.

Item Type: Article
Uncontrolled Keywords: Dye-sensitized photodetector; Layered double hydroxide; Mixed metal oxide; Nanostructures; Photo-responsivity
Subjects: Q Science > QC Physics
T Technology > TJ Mechanical engineering and machinery
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Faculty of Science > Dept of Physics
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 24 Jan 2020 01:13
Last Modified: 24 Jan 2020 01:13
URI: http://eprints.um.edu.my/id/eprint/23561

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