Mesoporous ZnO/ZnAl2O4 mixed metal oxide-based Zn/Al layered double hydroxide as an effective anode material for visible light photodetector
In this article, mesoporous ZnO/ZnAl2O4 mixed metal oxide (MMO) based Zn/Al layered double hydroxide (LDH) was prepared via modified co-precipitation and thermal reduction methods for visible light photodetector. A series of photodetectors were assembled using the corresponding mesoporous MMO attend...
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Published in | Materials science in semiconductor processing Vol. 121; p. 105370 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier Ltd
01.01.2021
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Subjects | |
Online Access | Get full text |
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Summary: | In this article, mesoporous ZnO/ZnAl2O4 mixed metal oxide (MMO) based Zn/Al layered double hydroxide (LDH) was prepared via modified co-precipitation and thermal reduction methods for visible light photodetector. A series of photodetectors were assembled using the corresponding mesoporous MMO attended with Ruthenizer dye as visible light sensitizer (535-bisTBA). Particularly, the amount of dye loaded onto the mesoporous layers was estimated through UV–Vis analysis-based regression equation, which provides a solid correlation with the fabricated device's photo-responsive performance. Simultaneously, a considerable photo-responsivity and specific photo-detectivity of the fabricated device was perceived. This could be attributed to the significant BET surface area (53 m2/g) as well as high loaded amount of dye on the prepared mesoporous layer (0.33 mMol/cm−2). In detail, the photo-responsivity and specific photo-detectivity for ZA-400 photodetector were found to be within the range of 11 mA/mW and 1011 jones, respectively; in which a superior photo-responsive behavior was acquired as compared to similar geometries. The optimum device (ZA-400) exhibited an approximate response time of 900 m s. In addition to the consistency and robustness of the proposed photodetector, this work offers an alternative approach for eco-friendly optoelectronic design.
•Mesoporous ZnO/ZnAl2O4 for visible light photodetector using Zn/Al-LDH as precursor.•Estimation of dye loaded onto mesoporous layer via UV–Vis-based regression equation.•Superior photo-responsive behavior at high dye loaded on the mesoporous layer. |
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ISSN: | 1369-8001 1873-4081 |
DOI: | 10.1016/j.mssp.2020.105370 |