Photoluminescence and time resolved photoluminescence properties in as grown ZnO thin films prepared by DC reactive sputtering for optoelectronic devices

Zaâboub, Z.; Hassen, F.; Chaabane, Loubna; Hassen, Maaref

doi:10.1016/j.mejo.2021.105153

Cited by 6 publications

(1 citation statement)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, because of its transparency, ZnO is attractive for integrated photonic devices [5] and photocatalysts for wastewater treatment [6,7]. ZnO thin films are prepared using various methods -reactive sputtering [8], spray pyrolysis [9], electrodeposition [10], chemical vapor deposition [11], magnetron sputtering [12], chemical bath deposition [13], sol-gel [14,15], etc. The sol-gel method has emerged as one of the most promising techniques, because it is particularly efficient in producing thin, transparent, homogeneous, multicomponent oxide films of many compositions on various substrates at low cost.…”

Section: Inntroductionmentioning

confidence: 99%

ENHANCED PHOTOCATALYTIC PROPERTIES OF MnOx CO-CATALYTIC MODIFIED ZnO NANOSTRUCTURED FILMS FOR ORGANIC DYE DEGRADATION

Ivanova,

Simeonova,

Kaneva

2024

JCTM

View full text Add to dashboard Cite

This work aims to enhance the photocatalytic activity of ZnO films for persistent organic pollutants. The photocatalysis method has gained significant interest as a sustainable and environmentally friendly approach to enhance the safety of clean water by eliminating persistent organic pollutants. Zinc oxide as a transition metal oxide is recognized as a highly effective material for photocatalysis. Even so, ZnO can be modified to increase its action and result in a more significant degradation of organic pollutants. In the photocatalytic process, an electron from the valence band is excited and moves to a higher energy level, the conduction band. Thus, an electron-holepair is formed. Unstoichiometry transition metal oxides, such as MnOx are hole-trapping co-catalysts that promote oxidation processes.This research reported the sol-gel synthesis of ZnO nanostructured films co-catalytic modified with MnOx for organic dye degradation. The confirmed features of ZnO/MnOx films are characterized by different analytical tools such as atomic force microscopy (AFM), X-ray diffraction analysis (XRD) and UV-Vis spectroscopy. The surface of the zinc oxide revealed a hexagonal wurtzite structure and a visible ganglia-like pattern. MnOx co-catalytic modification plays a vital role in the percent degradation of the organic dye under UV-irradiation conditions.

show abstract