Enhanced UV Emission from ZnO on Silver Nanoparticle Arrays by the Surface Plasmon Resonance Effect

Wang, Xiao; Ye, Qiong; Bai, Lihua; Shen, Xi; Wang, Tingting; Peng, Tao-Wei; Zhai, Xiao-Qi; Huang, Yi; Wu, Hao; Liu, Chang; Bu, Yuyu; Ma, Xiaojuan; Hao, Yue; Ao, Jin‐Ping

doi:10.1186/s11671-020-03470-2

Cited by 42 publications

(5 citation statements)

References 31 publications

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“…To enhance the light emission of sample A, Ag/SiO 2 NPs were embedded on the surface of aligned nanorod LEDs via the LSP coupling effect. It is well-known that the LSP resonance depends on the shape, size, and density of Ag/SiO 2 NPs that control the strength and spatial orientation of the electromagnetic LSP field. − Ahead of these factors, energy matching between the emission wavelength of a nanorod LED and the Ag NPs is a crucial factor. Therefore, the spherical Ag/SiO 2 NPs were prepared to accomplish energy matching with the blue-emitting InGaN/GaN nanorod LEDs.…”

Section: Resultsmentioning

confidence: 99%

Enabling Localized Surface Plasmon Emission from InGaN/GaN Nano-LEDs Integrated with Ag/SiO₂ Nanoparticles

Kim,

Uthirakumar,

Cho

et al. 2024

ACS Photonics

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The development of high brightness, small pixel size, and self-emissive light-emitting diodes (LEDs) is deliberately accelerating to replace conventional organic/inorganic LED displays for the virtual/augmented reality market. In this study, we report the fabrication process of individually well-separated blue-light-emitting InGaN/GaN nanorod LED arrays on a largescale wafer and detach to disperse them in acetone. The dispersed individual nanorod LEDs are aligned horizontally onto the interdigitated pattern with an alignment yield of ∼90% by applying a sinusoidal electric field at 1 MHz. The inferior electrical connectivity between the aligned nanorod LEDs and the metal electrodes is improved by encapsulating the ends of p-GaN and n-GaN with copper metal, leading to an ∼61-fold enhancement of emission ratio, in comparison. Furthermore, the electroluminescence and photoluminescence efficiencies of horizontally aligned individual nanorod LEDs are improved to ∼1.8and 2-fold after incorporating Ag/SiO 2 nanoparticles (NPs) on the surface of nanorod LEDs. Numerical simulation is performed to evaluate the impact of the localized surface plasmon (LSP) with respect to the SiO 2 shell thickness and space between the Ag/SiO 2 NPs. The strong LSP coupling effect ensues from the closely integrated Ag/ SiO 2 NPs on each nanorod LED facilitating an enhanced energy coupling efficiency of 69.4% with a fast decay lifetime of 1.25 ns. Thus, the high brightness and small pixel size of horizontally aligned Ag/SiO 2 NPs-embedded monolithic nano-LEDs are suitable for developing next-generation display technology.

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Section: Resultsmentioning

confidence: 99%

Enabling Localized Surface Plasmon Emission from InGaN/GaN Nano-LEDs Integrated with Ag/SiO₂ Nanoparticles

Kim,

Uthirakumar,

Cho

et al. 2024

ACS Photonics

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“…For a certain size and particle density, absorption may become dominant over scattering leading to PL quenching. ,, Usually, the larger metallic NPs provide a larger scattering cross section in coupling surface plasmons to light to increased UV emission, whereas in the smaller ones, absorption dominates over the scattering . Distance/space between the metallic NPs was also found to be an important aspect of the PL enhancement process. , Different plasmonic modes can be activated in a system depending on the distance between metallic nanoparticles . Collective modes predominate when particles interact with each other, which happens when the distance between them is sufficiently small.…”

Section: Resultsmentioning

confidence: 99%

“…16 Distance/space between the metallic NPs was also found to be an important aspect of the PL enhancement process. 16,54 Different plasmonic modes can be activated in a system depending on the distance between metallic nanoparticles. 55 Collective modes predominate when particles interact with each other, which happens when the distance between them is sufficiently small.…”

Section: Resultsmentioning

confidence: 99%

Surface Modification of ZnO Nanotubes by Ag and Au Coatings of Variable Thickness: Systematic Analysis of the Factors Leading to UV Light Emission Enhancement

Włodarski,

Nowak,

Putkonen

et al. 2023

ACS Omega

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Surface modification by plasmonic metals is one of the most promising ways to increase the band-to-band excitonic recombination in zinc oxide (ZnO) nanostructures. However, the metal-induced modulation of the UV light emission depends strongly on the production method, making it difficult to recognize the mechanism responsible for charge/energy transfer between the semiconductor and a metal. Therefore, in this study, the ZnO/Ag and Au hybrids were produced by the same, fully controlled experimental approach. ZnO nanotubes (NTs), fabricated by a template-assisted ALD synthesis, were coated by metals of variable mass thickness (1–6.5 nm thick) using the electron beam PVD technique. The deposited Ag and Au metals grew in the form of island films made of metallic nanoparticles (NPs). The size of the NPs and their size distribution decreased, while the spacing between the NPs increased as the mass of the deposited Ag and Au metals decreased. Systematic optical analysis allowed us to unravel a specific role of surface defects in ZnO NTs in the processes occurring at the ZnO/metal interface. The enhancement of the UV emission was observed only in the ZnO/Ag system. The phenomena were tentatively ascribed to the coupling between the defect-related (DL) excitonic recombination in ZnO and the localized surface plasmon resonance (LSPR) at the Ag NPs. However, the enhancement of UV light was observed only for a narrow range of Ag NP dimensions, indicating the great importance of the size and internanoparticle spacing in the plasmonic coupling. Moreover, the enhancement factors were much stronger in ZnO NTs characterized by robust DL-related emission before metal deposition. In contrast to Ag, Au coatings caused quenching of the UV emission from ZnO NTs, which was attributed to the uncoupling between the DL and LSP energies in this system and a possible formation of the ohmic contact between the Au metal and the ZnO.

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“…For example, Wei et al reported a one-dimensional microbelt/Au-nanoparticles construction to enhance the nonlinear third harmonic emission via the LSP effect [ 26 ]. Wang et al reported enhanced UV emission from ZnO on Ag NP arrays by the LSP effect [ 27 ]. To date, the enhancement of high-order multiphoton upconversion UV lasers by localized surface plasmon resonance effect has been rarely reported and requires in-depth analysis.…”

Section: Resultsmentioning

confidence: 99%

Higher-Order Multiphoton Absorption Upconversion Lasing Based on ZnO/ZnMgO Multiple Quantum Wells

Wei

Zhu

et al. 2022

Nanomaterials

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In the progress of nonlinear optics, multiphoton absorption (MPA) upconversion lasing enables many vital applications in bioimaging, three-dimensional optical data storage, and photodynamic therapy. Here, efficient four-photon absorption upconversion lasing from the ZnO/ZnMgO multiple quantum wells (MQWs) at room temperature is realized. Moreover, the MPA upconversion lasing and third-harmonic generation peak generated in the MQWs under the excitation of a femtosecond (fs) laser pulse were observed concurrently, and the essential differences between each other were studied comprehensively. Compared with the ZnO film, the upconversion lasing peak of the ZnO/ZnMgO MQWs exhibits a clear blue shift. In addition, the four-photon absorption upconversion photoluminescence (PL) intensity was enhanced in the MQWs/Au nanoparticles (NPs) by the metal-localized surface plasmons (LSPs). The work paves the way for short-wavelength lasers by taking advantage of the high stability and large exciton binding energy of the MQWs’ structures.

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Enhanced UV Emission from ZnO on Silver Nanoparticle Arrays by the Surface Plasmon Resonance Effect

Cited by 42 publications

References 31 publications

Enabling Localized Surface Plasmon Emission from InGaN/GaN Nano-LEDs Integrated with Ag/SiO₂ Nanoparticles

Enabling Localized Surface Plasmon Emission from InGaN/GaN Nano-LEDs Integrated with Ag/SiO₂ Nanoparticles

Surface Modification of ZnO Nanotubes by Ag and Au Coatings of Variable Thickness: Systematic Analysis of the Factors Leading to UV Light Emission Enhancement

Higher-Order Multiphoton Absorption Upconversion Lasing Based on ZnO/ZnMgO Multiple Quantum Wells

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Enhanced UV Emission from ZnO on Silver Nanoparticle Arrays by the Surface Plasmon Resonance Effect

Cited by 42 publications

References 31 publications

Enabling Localized Surface Plasmon Emission from InGaN/GaN Nano-LEDs Integrated with Ag/SiO2 Nanoparticles

Enabling Localized Surface Plasmon Emission from InGaN/GaN Nano-LEDs Integrated with Ag/SiO2 Nanoparticles

Surface Modification of ZnO Nanotubes by Ag and Au Coatings of Variable Thickness: Systematic Analysis of the Factors Leading to UV Light Emission Enhancement

Higher-Order Multiphoton Absorption Upconversion Lasing Based on ZnO/ZnMgO Multiple Quantum Wells

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Product

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Enabling Localized Surface Plasmon Emission from InGaN/GaN Nano-LEDs Integrated with Ag/SiO₂ Nanoparticles

Enabling Localized Surface Plasmon Emission from InGaN/GaN Nano-LEDs Integrated with Ag/SiO₂ Nanoparticles