Anti-reflection behavior of a surface Ga-doped ZnO nanoneedle structure and the controlling factors

Yao, Yufeng; Yang, Shaobo; Lin, Ho‐Hsiung; Chou, Keng-Ping; Weng, Chi-Ming; Liao, Jiayu; Lin, Chun-Han; Chen, Hao-Tsung; Su, Chih‐Ying; Tu, Charng-Gan; Kiang, Yean‐Woei; Yang, C. C.

doi:10.1364/ome.7.004058

Cited by 12 publications

(18 citation statements)

References 28 publications

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“…However, they become absorptive in the UV-B and UV-C spectral ranges because of their bandgap limitations. They are also absorptive in the near-infrared (NIR) range due to their decreasing real parts and increasing imaginary parts of dielectric constants with increasing wavelength 28,29 . When the real parts of dielectric constants become negative, surface plasmon resonance leads to enhanced absorption in this spectral range.…”

Section: Discussion – Potential Applicationsmentioning

confidence: 99%

Formation of Surface Silver Nano-network Structures through Hot Electron Regulated Diffusion-limited Aggregation

Yao

Yang

Teng

et al. 2019

Sci Rep

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A surface Ag nano-network pattern is formed by first depositing Ag nanoparticles (NPs) on a conductive template, which has a certain defect structure, and then illuminating the Ag NPs with ultraviolet (UV) light in a moist environment. Such an Ag nano-network pattern consists of multiple connected Brownian trees (BTs), which are produced through the diffusion-limited aggregation (DLA) process. In the DLA process, diffuse Ag + ions, which are generated by UV light illumination and dissolved by a thin adsorbed water layer on the surfaces of the Ag NPs and used GaN template, settle to form a BT through the combination with excited hot electrons migrating into the template from the Ag NPs. The lateral transport of hot electrons in the template is regulated by the distributions of threading dislocation and point defect cluster in the template, which eventually become the centers of BTs. The structure of a surface Ag nano-network can potentially serve as a transparent conductor.

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Section: Discussion – Potential Applicationsmentioning

confidence: 99%

Formation of Surface Silver Nano-network Structures through Hot Electron Regulated Diffusion-limited Aggregation

Yao

Yang

Teng

et al. 2019

Sci Rep

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Section: Introductionmentioning

confidence: 99%

“…Ga-doped ZnO (GaZnO) is a useful transparent conductor for various applications, particularly when GaZnO NWs are formed for the applications of light extraction in a light-emitting device, antireflection in a solar cell, and field emission . A GaZnO NW can be formed through the VLS process by using a Ag nanoparticle (NP) as a growth catalyst. , Because Ag atoms incorporate into the growth of GaZnO, the catalytic Ag droplet shrinks along NW growth, and hence a needle-like morphology is formed. In this study, assisted by scanning transmission electron microscopy (STEM), we study the polarities of GaZnO NWs grown through the VLS mode and thin films grown through the VS mode on Ga- and N-face GaN templates under the Zn- and O-rich growth conditions.…”

Section: Introductionmentioning

confidence: 99%

“…24,28,30,31 This incorporation channel determines the location of the nucleation island and crystal growth direction in such a growth process, which may control the polarity of a NW. 24,28 Ga-doped ZnO (GaZnO) is a useful transparent conductor for various applications, particularly when GaZnO NWs are formed for the applications of light extraction in a lightemitting device, 32 antireflection in a solar cell, 33 and field emission. 34 A GaZnO NW can be formed through the VLS process by using a Ag nanoparticle (NP) as a growth catalyst.…”

Section: Introductionmentioning

confidence: 99%

“…34 A GaZnO NW can be formed through the VLS process by using a Ag nanoparticle (NP) as a growth catalyst. 33,34 Because Ag atoms incorporate into the growth of GaZnO, the catalytic Ag droplet shrinks along NW growth, and hence a needle-like morphology is formed. In this study, assisted by scanning transmission electron microscopy (STEM), we study the polarities of GaZnO NWs grown through the VLS mode and thin films grown through the VS mode on Ga-and N-face GaN templates under the Zn-and Orich growth conditions.…”

Section: Introductionmentioning

confidence: 99%

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Polarity Control in Growing Highly Ga-Doped ZnO Nanowires with the Vapor–Liquid–Solid Process

Yao

Chou

Lin

et al. 2018

ACS Appl. Mater. Interfaces

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Surface behavior modification by forming surface-transparent conductive nanowires (NWs) is an important technique for many applications, particularly when the polarities of the NWs can be controlled. The polarities of Ga-doped ZnO (GaZnO) NWs grown on templates of different polarities under different growth conditions are studied for exploring a polarity control growth technique. The NWs are formed on Ga- and N-face GaN through the vapor–liquid–solid (VLS) process using Ag nanoparticles as growth catalyst. The NWs grown on templates of different polarities under the Zn- (O-) rich conditions are always Zn (O) polar. During the early stage of NW growth, because the lattice sizes among different nucleation islands formed at the triple-phase line are quite different, high-density planar defects are produced when lateral growths from multiple nucleation islands form a GaZnO double bilayer. In this situation, frequent domain inversions occur, and GaZnO polarity is unstable. Under the Zn- (O-) rich conditions, because the lateral growth rate of GaZnO in the Zn- (O-) polar structure is higher due to more available dangling bonds, the growth of the Zn- (O-) polar structure dominates NW formation such that the NW eventually becomes Zn (O) polar irrespective of the polarity of the growth template. Therefore, the polarity of a doped-ZnO NW can be controlled simply by the relative supply rates of Zn and O during VLS growth.

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Wide range variation of resonance wavelength of GaZnO plasmonic metamaterials grown by molecular beam epitaxy with slight modification of Zn effusion cell temperatures

Cheng

Wang

Lai

et al. 2021

Journal of Alloys and Compounds

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Anti-reflection behavior of a surface Ga-doped ZnO nanoneedle structure and the controlling factors

Cited by 12 publications

References 28 publications

Formation of Surface Silver Nano-network Structures through Hot Electron Regulated Diffusion-limited Aggregation

Formation of Surface Silver Nano-network Structures through Hot Electron Regulated Diffusion-limited Aggregation

Polarity Control in Growing Highly Ga-Doped ZnO Nanowires with the Vapor–Liquid–Solid Process

Wide range variation of resonance wavelength of GaZnO plasmonic metamaterials grown by molecular beam epitaxy with slight modification of Zn effusion cell temperatures

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