Effects of crystallization on the optical properties of ZnO nano-pillar thin films by sol-gel method

Chen, K.J.; Hung, Fei-Yi; Chang, Shoou‐Jinn; Young, Sheng-Joue; Hu, Zheng

doi:10.1016/j.cap.2011.03.033

Cited by 21 publications

(4 citation statements)

References 32 publications

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“…Nano-structured ZnO has been prepared by one step sol-gel technique [47]. In a typical procedure, mixtures of ethanol, diethanolamine (DEA) and zinc acetate dihydrate, were prepared.…”

Section: Catalyst Preparationmentioning

confidence: 99%

A simple and efficient approach for synthesis of 1,4-dihydro-pyridines using nano-crystalline solid acid catalyst

Teimouri

Ghorbanian²,

Moatari³

2013

Bull. Chem. Soc. Eth.

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ABSTRACT. A simple highly versatile and efficient synthesis of various 1,4-dihydropyridines in the condensation of aromatic aldehydes with β-dicarbonyl compounds and ammonium acetate in the presence of nano-sulfated zirconia, nano-structured ZnO, nano-γ-alumina and nano-ZSM-5 zeolites, as catalyst in the ethanol at moderate temperature is presented. The advantages of method are short reaction times and milder conditions and easy work-up. The catalysts can be recovered for the subsequent reactions and reused without any appreciable loss of efficiency.

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“…Nano-structured ZnO has been prepared by one step sol-gel technique [47]. In a typical procedure, mixtures of ethanol, diethanolamine (DEA) and zinc acetate dihydrate, were prepared.…”

Section: Catalyst Preparationmentioning

confidence: 99%

A simple and efficient approach for synthesis of 1,4-dihydro-pyridines using nano-crystalline solid acid catalyst

Teimouri

Ghorbanian²,

Moatari³

2013

Bull. Chem. Soc. Eth.

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“…The ZnO grown with high quality has various morphologies, such as nanorod (NR), nanodisc, nanoneedle, nanotube, nanosheet, and nanowire. (3)(4)(5) ZnO has been widely used in different applications, such as ultraviolet photodetectors, dye-sensitized solar cells, surface acoustic wave devices, gas sensors, light-emitting diodes, varistors, laser diodes, field emission devices, and optical resonators. (6)(7)(8)(9) A ZnO NR is an example of a tunable one-dimensional nanostructure with a high aspect ratio, made from a single ZnO crystal elongated along the c-axis, making it highly mechanically stable.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Ultraviolet Photodetector Based on Li-doped ZnO Nanorods

Chou

Shih²,

Chang³

2020

Sensors and Materials

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In this study, we report one-dimensional Li-doped ZnO nanorods (NRs) fabricated on glass substrates by the hydrothermal method and the fabrication of Li-doped ZnO NR photodetectors. It was found that the as-grown Li-doped ZnO NRs were structurally equivalent to a wurtzite structure. The NRs had average diameters of ~125, ~138, and ~176 nm. It was seen clearly that the Li-doped ZnO NRs had a uniform hexagonal structure. The on/off current contrast ratio of the Li-doped ZnO NR photodetector was approximately 19.3, and its dynamic response was revealed to be reproducible and stable.

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“…In particular, ZnO nanostructures have been attracting considerable interest because of their peculiar properties. They have been grown using various techniques such as chemical vapor deposition (CVD), physical vapor deposition, and solution techniques [1][2][3][6][7][8][9]. In particular, in CVD methods, vapor-liquid-solid (VLS) and vapor-solid (VS) processes have been used widely to produce ZnO nanorods (NRs) [4,[10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Formation Mechanism and Properties of Foam-Structured ZnO Films Prepared Using Catalyst-Free Carbothermal Method

Choi¹,

Kim

Jang

et al. 2019

Journal of Nanomaterials

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Foam-structured ZnO films were formed on c-axis Al2O3 substrates by using a catalyst-free carbothermal method. The morphological properties of the films strongly depended on their substrate position in the reactor, implying that the quantity of Zn vapor transported played a crucial role in determining the film structure. The formation mechanism of the films is proposed to be as follows: with increased transport of Zn vapor, vaporized Zn elements transformed into liquid Zn nanoparticles, and the liquid Zn elements on the rods promoted the new nucleation of ZnO nanorods. The repeated growth of ZnO rods at the nucleation sites led to the foam-like structure. The as-formed foam-structured ZnO films exhibited the wurtzite crystal structure, and the atomic composition ratio of Zn to O was 1 : 0.85. The main photoluminescence emissions were centered at 3.3 and 2.5 eV, and they were attributed to band-to-band and defect-related transitions, respectively.

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Effects of crystallization on the optical properties of ZnO nano-pillar thin films by sol-gel method

Cited by 21 publications

References 32 publications

A simple and efficient approach for synthesis of 1,4-dihydro-pyridines using nano-crystalline solid acid catalyst

A simple and efficient approach for synthesis of 1,4-dihydro-pyridines using nano-crystalline solid acid catalyst

Characteristics of Ultraviolet Photodetector Based on Li-doped ZnO Nanorods

Formation Mechanism and Properties of Foam-Structured ZnO Films Prepared Using Catalyst-Free Carbothermal Method

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