Effect of surface-to-volume ratio on the optical and magnetic properties of ZnO nanorods by hydrothermal method

Xu, Jianping; Shi, Shaobo; Wang, Chang; Zhang, Yuzhu; Liu, Zeming; Zhang, Xuguang; Li, Lan

doi:10.1016/j.jallcom.2015.07.038

Cited by 19 publications

(6 citation statements)

References 28 publications

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“…This could be due to the thinner depletion width for the good crystal quality of ZnO NRs with less amount of the adsorbed oxygen. The results are consistent with our previously published data …”

Section: Resultssupporting

confidence: 94%

“…A transfer of electrons between a deep donor of Vo + and a valence band is the origin of the green emission band. 36,37 As shown in Figure 2e, under the excitation energy above the band gap (the wavelength of 340 nm), the yellow emission band is excited and has blue shifted for ZnO NRs prepared on AZO thin film. This could be due to the thinner depletion width for the good crystal quality of ZnO NRs with less amount of the adsorbed oxygen.…”

Section: Methodsmentioning

confidence: 95%

“…The results are consistent with our previously published data. 37 The XPS spectra calibrated by the containment carbon (C 1s = 284.8 eV) are presented in Figure 3a−d to study the surface components of ZnO NRs. All the ZnO NRs exhibit similar XPS wide-scan spectra (see Figure 3a).…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Development of Solution-Processed ZnO Nanorod Arrays Based Photodetectors and the Improvement of UV Photoresponse via AZO Seed Layers

Zhang

Shi

et al. 2016

ACS Appl. Mater. Interfaces

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Designing a rational structure and developing an efficient fabrication technique for bottom-up devices offer a promising opportunity for achieving high-performance devices. In this work, we studied how Al-doped ZnO (AZO) seed layer films influence the morphology and optical and electrical properties for ZnO aligned nanorod arrays (NRs) and then the performance of ZnO NRs based ultraviolet photodetectors (UV PDs) with Au/ZnO NRs Schottky junctions and p-CuSCN/n-ZnO NRs heterojunctions. The PD with AZO thin film with 0.5 at. % Al doping (named as AZO (0.5%)) exhibited more excellent photoresponse properties than that with pristine ZnO and AZO (1%) thin films. This phenomenon can be ascribed to the good light transmission of the AZO layer, increased density of the NRs, and improved crystallinity of ZnO NRs. The PDs based on CuSCN/ZnO NRs heterojunctions showed good rectification characteristics in the dark and self-powered UV photoresponse properties with excellent stability and reproducibility under low-intensity illumination conditions. A large responsivity located at 365 nm of 22.5 mA/W was achieved for the PD with AZO (0.5%) thin film without applied bias. The internal electric field originated from p-CuSCN/n-ZnO NRs heterojunctions can separate photogenerated carriers in ZnO NRs and drift toward the corresponding electrode.

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Section: Resultssupporting

confidence: 94%

Section: Methodsmentioning

confidence: 95%

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Development of Solution-Processed ZnO Nanorod Arrays Based Photodetectors and the Improvement of UV Photoresponse via AZO Seed Layers

Zhang

Shi

et al. 2016

ACS Appl. Mater. Interfaces

Self Cite

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“…The green emissions are found ranging from 500 nm to 600 nm which are mainly attributed to the defects, such as O-vacancy, Zn-interstitial, and absorbed molecules [30,31,37] …”

Section: Resultsmentioning

confidence: 99%

“…It is commonly believed that the oxygen-related species, such as O 2 and OH − can be absorbed on the surface of ZnO nanorods. The electrons or holes captured by the O 2 and OH − on the surface of ZnO nanorods can nonradiatively recombine [37]. The large surface-to-volume ratio will induce a high amount of O 2 and OH − absorbed on the surface, which can capture more photo-generated electrons or holes.…”

Section: Resultsmentioning

confidence: 99%

Morphology Transition of ZnO Nanorod Arrays Synthesized by a Two-Step Aqueous Solution Method

Huang

Lin

et al. 2018

Crystals

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ZnO nanorod arrays (ZNAs) with vertically-aligned orientation were obtained by a two-step aqueous solution method. The morphology of the ZnO nanorods was regulated by changing the precursor concentration and the growth time of each step. ZnO nanorods with distinct structures, including flat top, cone top, syringe shape, and nail shape, were obtained. Moreover, based on the X-ray diffraction (XRD) and the transmission electron microscope (TEM) analysis, the possible growth mechanisms of different ZnO nanostructrues were proposed. The room-temperature PL spectra show that the syringe-shaped ZNAs with ultra-sharp tips have high crystalline quality. Our study provides a simple and repeatable method to regulate the morphology of the ZNAs.

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Synthesis and investigation of photonic properties of surface modified ZnO nanoparticles with imine linked receptor as coupling agent- for application in LEDs

Madhu

Kaur

2017

J Mater Sci: Mater Electron

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Effect of surface-to-volume ratio on the optical and magnetic properties of ZnO nanorods by hydrothermal method

Cited by 19 publications

References 28 publications

Development of Solution-Processed ZnO Nanorod Arrays Based Photodetectors and the Improvement of UV Photoresponse via AZO Seed Layers

Development of Solution-Processed ZnO Nanorod Arrays Based Photodetectors and the Improvement of UV Photoresponse via AZO Seed Layers

Morphology Transition of ZnO Nanorod Arrays Synthesized by a Two-Step Aqueous Solution Method

Synthesis and investigation of photonic properties of surface modified ZnO nanoparticles with imine linked receptor as coupling agent- for application in LEDs

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