Selective electro — thermal growth of zinc oxide nanowire on photolithographically patterned electrode for microsensor applications

Suh, Yong-Suk; Hong, Sukjoon; Kim, Gunho; Hwang, Kwang-Il; Choi, Jun‐Ho; Hong, Won-Hwa; Yeo, Junyeob; Ko, Seung Hwan

doi:10.1007/s40684-016-0022-6

Cited by 11 publications

(2 citation statements)

References 26 publications

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“…ZnO nanowires are used for different applications such as gas sensors, nanogenerators and photocatalysis, optical emission, optoelectronic devices, piezoelectric transducers and actuators, and biosensors. − The growth of extended and oriented nanostructures composed of high density ZnO nanowires like long branched “treelike” and other complex nanostructures are desirable for photoanodes and many other applications, but it is still challenging to synthesize complex nanostructures with controlled crystalline morphology, orientation, and surface architecture. , …”

Section: Introductionmentioning

confidence: 99%

Growth of Long ZnO Nanowires with High Density on the ZnO Surface for Gas Sensors

Campos

Paes

Correa

et al. 2019

ACS Appl. Nano Mater.

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Among the various approaches to grow semiconducting oxide nanowires, the thermal oxidation procedure is considered a simple, efficient, and fast method that allows the synthesis of micro and nanostructured arrangements with controlled size and morphology. In the work reported in this paper, long ZnO nanowires were synthesized on the surface of oxidized high-purity Zn foils by heating in air at different rates and temperatures. The size and morphology investigated by scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM) for a sample heated at 620 °C with heating rate of 20 °C/min reveal the growth of long ZnO nanowires with length of ∼50 μm and average diameter of 74 nm grown along the ⟨112̅ 0⟩ direction with high population density. Results with different heating rates indicates that this parameter is determinant in tuning the size, morphology, and population density of nanowires. X-ray diffraction (XRD) shows patterns for both ZnO and metallic Zn with preferential orientation, whereas perturbed angular correlation (PAC) measurements using 111 In( 111 Cd) probe nuclei indicate that probe nuclei occupy only Zn sites in the preferential oriented metallic zinc. However, for samples submitted to high-temperature heating (820 and 1000 °C), XRD yields only the ZnO pattern and, amazingly, PAC continues showing probe nuclei only at metallic Zn sites indicating the presence of thin regions of highly oriented Zn trapped between grains of ZnO. Moreover, this strong preference of indium atoms (of parent radioactive 111 In) here revealed helps to understand the oxidation mechanism and the growth of the nanowires.

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Section: Introductionmentioning

confidence: 99%

Growth of Long ZnO Nanowires with High Density on the ZnO Surface for Gas Sensors

Campos

Paes

Correa

et al. 2019

ACS Appl. Nano Mater.

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“…Aerosol jet printing of ZnO precursor ink was employed to prepare an active layer in an electrolyte gate transistor [35]. All-solution processed ZnO has been considered as a potential fabrication method for electronic devices such as UV photodetectors [37][38][39] and transistors [40,41]. Besides, inkjet printing offers an efficient solution for deposition of microdroplets with high precision.…”

Section: Introductionmentioning

confidence: 99%

All-inkjet-printed flexible ZnO micro photodetector for a wearable UV monitoring device

et al. 2017

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Fabrication of small-sized patterns of inorganic semiconductor onto flexible substrates is a major concern when manufacturing wearable devices for measuring either biometric or environmental parameters. In this study, micro-sized flexible ZnO UV photodetectors have been thoroughly prepared by a facile inkjet printing technology and followed with heat treatments. A simple ink recipe of zinc acetate precursor solution was investigated. It is found that the substrate temperature during zinc precursor ink depositing has significant effects on ZnO pattern shape, film morphology, and crystallization. The device fabricated from the additive manufacturing approach has good bendability, Ohmic contact, short response time as low as 0.3 s, and high on/off ratio of 3525. We observed the sensor's dependence of response/decay time by the illuminating UV light intensity. The whole process is based on additive manufacturing which has many benefits such as rapid prototyping, saving material, being environmentally friendly, and being capable of creating high-resolution patterns. In addition, this method can be applied to flexible substrates, which makes the device more applicable for applications requiring flexibility such as wearable devices. The proposed all-inkjet-printing approach for a micro-sized ZnO UV photodetector would significantly simplify the fabrication process of micro-sized inorganic semiconductor-based devices. A potential application is real-time monitoring of UV light exposure to warn users about unsafe direct sunlight to implement suitable avoidance solutions.

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UV-LEDs for the Disinfection and Bio-Sensing Applications

Won

Tran

Park

et al. 2018

Int. J. Precis. Eng. Manuf.

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Selective electro — thermal growth of zinc oxide nanowire on photolithographically patterned electrode for microsensor applications

Cited by 11 publications

References 26 publications

Growth of Long ZnO Nanowires with High Density on the ZnO Surface for Gas Sensors

Growth of Long ZnO Nanowires with High Density on the ZnO Surface for Gas Sensors

All-inkjet-printed flexible ZnO micro photodetector for a wearable UV monitoring device

UV-LEDs for the Disinfection and Bio-Sensing Applications

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