Enhanced ultraviolet electroluminescence from ZnO nanoparticles via decoration of partially oxidized Al layer

Chan, Si Yuan; Wu, Sheng‐Chan; Wang, Ching Yen; Hsu, Hsu Cheng

doi:10.1364/oe.382340

Cited by 9 publications

(4 citation statements)

References 48 publications

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“…In this special issue, four approaches to addressing this challenge are presented. First, Si-Yuan Chan and colleagues [12] consider the challenge of creating high-performance UV light emitting diodes (LEDs). While it is possible to create these with zinc oxide (ZnO) from a gallium nitride (GaN)/sapphire base, the photoluminescence and electroluminescence is not always stable or high in performance.…”

Section: Solid-state Lighting and Illuminationmentioning

confidence: 99%

Feature issue introduction: Optical Devices and Materials for Solar Energy and Solid-state Lighting (PVLED) 2019

et al. 2020

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This special feature issue of Optics Express highlights contributions from authors who presented their latest research in the Optical Devices and Materials for Solar Energy and Solid-state Lighting (PVLED) topical meeting of the OSA Advanced Photonics Congress, held in Burlingame, California, from 29 July-August 1, 2019. This feature issue is comprised of nine contributed papers, expanding upon their respective conference proceedings to cover timely research topics applying optics and photonics to solar energy and solid-state lighting.

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Section: Solid-state Lighting and Illuminationmentioning

confidence: 99%

Feature issue introduction: Optical Devices and Materials for Solar Energy and Solid-state Lighting (PVLED) 2019

et al. 2020

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“…In particular, powders and polycrystalline layers of ZnO have been used to demonstrate random UV lasing [8][9][10]. ZnO under various forms (polycrystalline ZnO, nanowires, nano-crystalsK) has also attracted considerable interest as an active material for UV LEDs, mostly in the form of n-doped regions of heterojunctions [11][12][13][14][15][16], but also in pure ZnO homojunctions thanks to progresses in p-type doping of this material [17].…”

Section: Introductionmentioning

confidence: 99%

Enhancement and tuning of the defect-induced electroluminescence of ZnO mesoporous layers in the visible range

Roland¹,

Schanne²,

Bogicevic³

et al. 2022

Nanotechnology

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We show a way to pattern the visible electroluminescence of solution-processed mesoporous ZnO layers. Our approach consists in locally changing the nanoscale morphology of the coated ZnO layers by patterning the underlying surface with thin metallic patches. Above the metal, the ZnO film is organized in clusters that enhance its defect-induced electroluminescence. The resulting emission occurs over a large continuum of wavelengths in the visible and near-infrared range. This broad emission continuum is filtered by thin-film interferences that develops within the device, making it possible to fabricate LEDs with different colors by adjusting the thickness of their transparent electrode. When the metallic patterns used to change the morphology of the ZnO layer reach sub-micron dimensions, additional plasmonic effects arise, providing extra degrees of freedom to tune the colour and polarization of the emitted photons.

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“…In addition, ZnO is a non-toxic material that is easily accessible at a low price. Consequently, ZnO is widely used in various applications, such as plasmonic metamaterials [1], laser materials [2], ultraviolet light sources [3], solar cell counter-electrodes [4], and transparent conducting oxides (TCOs) [5,6].…”

Section: Introductionmentioning

confidence: 99%

Low-Temperature Large-Area Zinc Oxide Coating Prepared by Atmospheric Microplasma-Assisted Ultrasonic Spray Pyrolysis

2021

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Zinc oxide (ZnO) coatings have various unique properties and are often used in applications such as transparent conductive films in photovoltaic systems. This study developed an atmospheric-pressure microplasma-enhanced ultrasonic spray pyrolysis system, which can prepare large-area ZnO coatings at low temperatures under atmospheric-pressure conditions. The addition of an atmospheric-pressure microplasma-assisted process helped improve the preparation of ZnO coatings under atmospheric conditions, compared to using a conventional ultrasonic spray pyrolysis process, effectively reducing the preparation temperature to 350 °C. A program-controlled three-axis platform demonstrated its potential for the large-scale synthesis of ZnO coatings. The X-ray diffraction results showed that the ZnO coatings prepared by ultrasonic spray pyrolysis exhibited (002) preferred growth orientation and had a visible-light penetration rate of more than 80%. After vacuum treatment, the ZnO reached a 1.0 × 10−3 Ωcm resistivity and a transmittance of 82%. The tribology behavior of ZnO showed that the vacuum-annealed coating had a low degree of wear and a low coefficient of friction as the uniformly distributed and dense coating increased its load capacity.

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Enhanced ultraviolet electroluminescence from ZnO nanoparticles via decoration of partially oxidized Al layer

Cited by 9 publications

References 48 publications

Feature issue introduction: Optical Devices and Materials for Solar Energy and Solid-state Lighting (PVLED) 2019

Feature issue introduction: Optical Devices and Materials for Solar Energy and Solid-state Lighting (PVLED) 2019

Enhancement and tuning of the defect-induced electroluminescence of ZnO mesoporous layers in the visible range

Low-Temperature Large-Area Zinc Oxide Coating Prepared by Atmospheric Microplasma-Assisted Ultrasonic Spray Pyrolysis

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