Characteristics of flexible ZnO nanorod UV photodetectors processed by using a direct silicon etching transfer method

Jang, Hun; Kwon, Do Young; Kim, Do Hoon; Myoung, Jae‐Min

doi:10.1039/d2tc00377e

Cited by 8 publications

(7 citation statements)

References 45 publications

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“…ZnO nanotube array preparation typically requires advanced fabrication techniques, such as atomic layer deposition (ALD), pulsed laser deposition, magnetron sputtering, and chemical vapor deposition. ,− In general, obtaining aligned arrays requires complex and lengthy processing. ,, For example, in our previous study, a tree crown-like nanotube structure was fabricated using a multiple-step process, including ALD and polishing . Fabricating oriented nanotube arrays in a simple, low-cost, and environmentally friendly way remains challenging.…”

Section: Introductionmentioning

confidence: 99%

“…10,20−26 In general, obtaining aligned arrays requires complex and lengthy processing. 12,13,27 For example, in our previous study, a tree crown-like nanotube structure was fabricated using a multiple-step process, including ALD and polishing. 10 Fabricating oriented nanotube arrays in a simple, low-cost, and environmentally friendly way remains challenging.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Recently, with the rapid advance in nanofabrication techniques, several high-performance novel photoelectric devices with micro/nanostructures based on ZnO have been developed. − ZnO with micro/nanostructures outperforms bulk or thin-film ZnO because of the high surface-to-volume ratio from its micro/nanoscale features, enhancing photovoltaic conversion efficiency. Particularly, ZnO with aligned structures, including nanotube-/nanorod- − /nanofiber-/nanowire-like − arrays, has been utilized as favorable structures owing to their ordered orientation, maximized contact area, and ample available modification sites. Especially for nanotube arrays, which exhibit vertical orientation, hollow tube channels, and thin nanoscale walls, they are novel and promising structures for sensing applications.…”

Section: Introductionmentioning

confidence: 99%

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Simple Template-Mediated Fabrication of ZnO Nanotube Arrays and Their Application in Flexible Ultraviolet Photodetectors

Chen

Tian

2023

ACS Appl. Nano Mater.

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ZnO, as an important semiconductor, has been extensively studied for a wide range of applications. To date, with the development of micro/nano manufacturing technology, various hierarchical ZnO nanostructures have been fabricated and explored, showing encouraging success in advanced photodetectors. ZnO nanotube structure has a high surface-to-volume ratio, and versatile hollow channels, which are promising for sensing applications. Typical nanotube arrays primarily rely on advanced nanofabrication technologies. Simple and low-cost fabrication strategies are still lacking. Herein, we report a simple template fabrication method to obtain vertically aligned ZnO nanotube arrays. Using flexible, etched polyimide membranes as the template, ZnO nanotube arrays can be prepared in situ by dip-coating the sample into a zinc acetate solution followed by heating. Different hierarchical ZnO nanotube structures were obtained with the nanotube arrays when the method was combined with hydrothermal growth. We have demonstrated that the structures may be used in flexible and transparent photodetectors. Our work provides a facile approach for fabricating ZnO nanotube arrays and expands the application of ZnO nanotube structures to flexible and transparent photodetectors.

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Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Simple Template-Mediated Fabrication of ZnO Nanotube Arrays and Their Application in Flexible Ultraviolet Photodetectors

Chen

Tian

2023

ACS Appl. Nano Mater.

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“…The crucial problem of flexible UV photodetectors lies in the preparation of photosensitive semiconductor materials on flexible substrates. Limited by the poor temperature resistance of flexible substrates such as PET, the high-temperature fabrication process for many inorganic semiconductors is no longer suitable. − Therefore, it is an urgent pursuit for flexible photodetectors to obtain high-quality semiconductors with excellent photoelectric conversion performance through a low-temperature process.…”

Section: Introductionmentioning

confidence: 99%

Sunscreen-Inspired ZnO/PEG Composites for Flexible Ultraviolet Photodetectors with a Giant On–Off Ratio

Yang

et al. 2023

ACS Photonics

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Zinc oxide (ZnO) nanomaterials have attracted much attention in UV photodetectors owing to the suitable band gap and high photoelectric conversion efficiency. However, the loose structure of nanomaterials assembled by a low-temperature process cannot meet the mechanical requirements of flexible photodetectors. The high dark current caused by defects in ZnO severely drags down the response performance of photodetectors. To address these issues, we have proposed a novel strategy for constructing flexible photodetectors based on ZnO and poly(ethylene glycol) (PEG) composites. Inspired by the sunscreen, the addition of PEG can enhance the interaction of ZnO nanoparticles, thus improving the film-forming ability and the mechanical endurance of the composites. By coating the ZnO/PEG composite on a common printing paper, the flexible photodetector shows unexpected good performance, such as a high responsivity of 1.77 A·W–1 and a large specific detectivity of 3.89 × 1013 Jones. Notably, a giant on–off ratio of up to 1.99 × 105 has been achieved by suppression of dark current. The device also exhibits satisfactory mechanical flexibility after long-term bending tests. In addition, the low-cost raw materials and scalable manufacturing processes further expand its application prospects in flexible optoelectronic technologies.

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Section: Introduction Of Optoelectronic Materialsmentioning

confidence: 99%

Ferroelectric–Optoelectronic Hybrid System for Photodetection

Liu

Zhang

et al. 2023

Small Methods

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Photodetectors (PDs), as functional devices based on photon‐to‐electron conversion, are an indispensable component for the next‐generation Internet of Things system. The research of advanced and efficient PDs that meet the diverse demands is becoming a major task. Ferroelectric materials can develop a unique spontaneous polarization due to the symmetry‐breaking of the unit cell, which is switchable under an external electric field. Ferroelectric polarization field has the intrinsic characteristics of non‐volatilization and rewritability. Introducing ferroelectrics to effectively manipulate the band bending and carrier transport can be non‐destructive and controllable in the ferroelectric–optoelectronic hybrid systems. Hence, ferroelectric integration offers a promising strategy for high‐performance photoelectric detection. This paper reviews the fundamentals of optoelectronic and ferroelectric materials, and their interactions in hybrid photodetection systems. The first section introduces the characteristics and applications of typical optoelectronic and ferroelectric materials. Then, the interplay mechanisms, modulation effects, and typical device structures of ferroelectric–optoelectronic hybrid systems are discussed. Finally, in summary and perspective section, the progress of ferroelectrics integrated PDs is summed up and the challenges of ferroelectrics in the field of optoelectronics are considered.

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Characteristics of flexible ZnO nanorod UV photodetectors processed by using a direct silicon etching transfer method

Abstract: A simple and sustainable method is presented for producing ultra-thin flexible ultraviolet (UV) photodetectors based on zinc oxide (ZnO) nanorods (NRs) by using a direct silicon etching transfer (DSET) method...

Cited by 8 publications

References 45 publications

Simple Template-Mediated Fabrication of ZnO Nanotube Arrays and Their Application in Flexible Ultraviolet Photodetectors

Simple Template-Mediated Fabrication of ZnO Nanotube Arrays and Their Application in Flexible Ultraviolet Photodetectors

Sunscreen-Inspired ZnO/PEG Composites for Flexible Ultraviolet Photodetectors with a Giant On–Off Ratio

Ferroelectric–Optoelectronic Hybrid System for Photodetection

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