Low-temperature solution-processed zinc oxide field effect transistor by blending zinc hydroxide and zinc oxide nanoparticle in aqueous solutions

Shin, Hyeonwoo; Kang, Chan‐mo; Baek, Kyu‐Ha; Kim, Jun Young; Do, Lee‐Mi; Lee, Changhee

doi:10.7567/jjap.57.05gd04

Cited by 6 publications

(2 citation statements)

References 32 publications

(44 reference statements)

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“…After 30 min of UVO processing, a shoulder peak at 530.3 eV appeared for the first time. The smallest energy level peak at 530.3 eV (denoted as Zn-OH in Figure 3) is assigned to the oxygen atoms in zinc hydroxide (Zn(OH) 2 ) [66,67,68], and the other peaks at 531.6 (Zn-O) and 532.2 eV (V O ) are associated with the oxygen atoms in ZnO with and without oxygen vacancies, respectively [69,70,71,72]. Hence, it can be interpreted that the Zn(OH) 2 in the synthesized ZnO sample was fully transformed into ZnO with some oxygen vacancies during the first 10-min UVO treatment, and afterwards the oxygen vacancies were filled with oxygen atoms (i.e., oxygen uptake occurred).…”

Section: Resultsmentioning

confidence: 99%

Effect of Ultraviolet–Ozone Treatment on the Properties and Antibacterial Activity of Zinc Oxide Sol-Gel Film

Kim

Lee

et al. 2019

Materials

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To combat infectious diseases, zinc oxide (ZnO) has been identified as an effective antibacterial agent; however, its performance can be adversely affected by harsh application environments. The ozone impact on ZnO antibacterial film needs to be evaluated prior to its application in an ozone disinfection system. In this study, ZnO films synthesized via sol-gel/spin-coating were subjected to ultraviolet–ozone (UVO) treatment for different periods. Surface investigations using scanning electron microscopy, ultraviolet–visible spectroscopy, and X-ray photoelectron spectroscopy revealed that the treatment-induced film changes. With longer UVO treatment, the surface porosity of the film gradually increased from 5% to 30%, causing the transmittance reduction and absorbance increase in visible-light range. Phase transformation of Zn(OH)2 to ZnO occurred during the first 10 min of UVO treatment, followed by oxygen uptake as a consequence of the reaction with reactive oxygen species generated during UVO treatment. However, despite these surface changes, the satisfactory antibacterial activity of the synthesized ZnO film against Staphylococcus aureus and Escherichia coli was sustained even after 120 min of UVO treatment. This indicates that the UVO-induced surface changes do not have a significant effect on the antibacterial performance and that the ZnO sol-gel film possesses good functional durability in ozone environments.

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Section: Resultsmentioning

confidence: 99%

Effect of Ultraviolet–Ozone Treatment on the Properties and Antibacterial Activity of Zinc Oxide Sol-Gel Film

Kim

Lee

et al. 2019

Materials

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“…biosensing [4], photocatalysis [5], optoelectronics [6], electronics [7], spintronics [8] and photonics [9]. Many of the proposed devices rely on the fact that ZnO can be easily and cost effectively nanostructured, giving rise to one of the richest families of semiconductor nanostructures known [10].…”

Section: Introductionmentioning

confidence: 99%

Structural, optical and vibrational properties of ZnO:M (M=Al3+ and Sr2+) nano and micropowders grown by hydrothermal synthesis

Marin

Soliz

Gutierrez

et al. 2019

Journal of Alloys and Compounds

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Powders of ZnO and ZnO:M (M = Al 3+ and Sr 2+) with 1 and 4% of M nominal content were synthetized by a hydrothermal method in a diethanolamine (DEA) medium. The samples were studied by scanning electron microscopy (SEM), X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX), micro-Raman and photoluminescence (PL). The powder particles were spherical with average radius decreasing from 1 µm down to 70 nm with increasing Al 3+ nominal content but nearly independent on the Sr 2+ nominal content. The XRD and micro-Raman results indicate that both Al 3+ and Sr 2+ mostly incorporated substitutionally into the ZnO lattice, giving rise to compressive and tensile strain, respectively, as a result of ionic radii differences. The PL spectra for ZnO:Al exhibit a dopant-induced contribution at ∼3.1 eV, which is not observed for ZnO:Sr, due to radiative transitions involving trapping of photocarriers at theoretically expected substitutional Al 3+ donor states or at Zn interstitial defects.

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ZnO-based electrolyte-gated transistor (EGT) applied as multiparametric UV-sensing device

Vieira¹,

Nogueira²,

Morais³

et al. 2022

Sensors and Actuators A: Physical

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Low-temperature solution-processed zinc oxide field effect transistor by blending zinc hydroxide and zinc oxide nanoparticle in aqueous solutions

Cited by 6 publications

References 32 publications

Effect of Ultraviolet–Ozone Treatment on the Properties and Antibacterial Activity of Zinc Oxide Sol-Gel Film

Effect of Ultraviolet–Ozone Treatment on the Properties and Antibacterial Activity of Zinc Oxide Sol-Gel Film

Structural, optical and vibrational properties of ZnO:M (M=Al3+ and Sr2+) nano and micropowders grown by hydrothermal synthesis

ZnO-based electrolyte-gated transistor (EGT) applied as multiparametric UV-sensing device

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