Vibrational study of Li-doped ZnO sprayed thin films along with sensors under ethanol vapor and photocatalytic applications

Salah, Mohamed; Zayani, Wissem; Bouricha, B.; Azizi, Samir; Alatrache, A.; Amlouk, M.; Lamloumi, J.

doi:10.1007/s10854-020-04426-z

Cited by 2 publications

(1 citation statement)

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“…M. Salah and collaborators developed a ZnO-doped rare-earth lithium sensor, demonstrating an improvement in the performance for detecting ethanol when ZnO was doped. According to the authors, the creation of defects by the incorporation of Li+ ions into the ZnO network and the increase in oxygen vacancies result in a higher reactivity with gases due to the higher density of active sites [ 35 ]. P. Bharathi et al doped ZnO with gadolinium (Gd) to detect xylene.…”

Section: Resultsmentioning

confidence: 99%

Dysprosium Doped Zinc Oxide for NO2 Gas Sensing

Fidha

Bitri

Mahjoubi

et al. 2022

Sensors

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Pure and dysprosium-loaded ZnO films were grown by radio-frequency magnetron sputtering. The films were characterized using a wide variety of morphological, compositional, optical, and electrical techniques. The crystalline structure, surface homogeneity, and bandgap energies were studied in detail for the developed nanocomposites. The properties of pure and dysprosium-doped ZnO thin films were investigated to detect nitrogen dioxide (NO2) at the ppb range. In particular, ZnO sensors doped with rare-earth materials have been demonstrated as a feasible strategy to improve the sensitivity in comparison to their pure ZnO counterparts. In addition, the sensing performance was studied and discussed under dry and humid environments, revealing noteworthy stability and reliability under different experimental conditions. In this perspective, additional gaseous compounds such as ammonia and ethanol were measured, resulting in extremely low sensing responses. Therefore, the gas-sensing mechanisms were discussed in detail to better understand the NO2 selectivity given by the Dy-doped ZnO layer.

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Section: Resultsmentioning

confidence: 99%