Improvement in structural, electrical, and optical properties of Al-doped ZnO nanolayers by sodium carbonate prepared via solgel method

Ghasedi, Arman; Koushki, E.; Zirak, Mohammad; Alehdaghi, Hassan

doi:10.1007/s00339-020-03663-7

Cited by 8 publications

(1 citation statement)

References 36 publications

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“…It is worth noting that in previous literature, AZO prepared by other approaches like sol-gel method demonstrates decreased transmittance with increased Al content [32]. This difference may be attributed to the inhomogeneous doping: if Al dopant concentration is substantial in AZO nanomembrane prepared by sol-gel method, clusters of Al could induce considerable random scattering of light [43]. Conversely, AZO nanomembrane deposited layer by layer by using ALD method is obviously uniform, which reduces the scattering of light [44].…”

Section: Resultsmentioning

confidence: 92%

Atomic layer deposition of Al-doped ZnO nanomembrane with in situ monitoring

Wang,

Gu,

Zhao

et al. 2024

Nanotechnology

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Due to shortcomings such as poor homogeneity of Al doping, precisely controlling the thickness, inability to conformally deposit on high aspect ratio devices and high pinhole rate, the applications of Al-doped ZnO (AZO) nanomembrane in integrated optoelectronic devices are remarkably influenced. Here, we report in situ monitoring during the atomic layer deposition (ALD) of AZO nanomembrane by using an integrated spectroscopic ellipsometer. AZO nanomembranes with different compositions were deposited with real-time and precise atomic level monitoring of the deposition process. We specifically investigate the half reaction and thickness evolution during the ALD processes and the influence of the chamber temperature is also disclosed. Structural characterizations demonstrate that the obtained AZO nanomembranes without any post-treatment are uniform, dense and pinhole-free. The transmittances of the nanomembranes in visible range are > 94%, and the optimal conductivity can reach up to 1210 S/cm. The output of current research may pave the way for AZO nanomembrane becoming promising in integrated optoelectronic devices.

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Section: Resultsmentioning

confidence: 92%