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Surface morphology, electrochemical and electrical performances of ZnO thin films sensitized with Ag nanoparticles by UV irradiation

  • Congrong Wang
  • Zhengyu Yang
  • Jianguo LvEmail author
  • Qianqian Zhu
  • Jingwen Jiang
  • Min Zhao
  • Wenhao Wang
  • Xiaoshuang Chen
Article
  • 44 Downloads

Abstract

Pure zinc oxide and Ag/ZnO thin films were prepared via two step method. The crystal structure, topography, chemical composition and optical properties were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), X-ray photoelectron spectroscopy (XPS), ultraviolet–visible (UV–Vis) spectrophotometer and laser micro-Raman spectrometer. XRD, FE-SEM and XPS results indicated that Ag nanoparticles were successfully deposited on the zinc oxide nanorods. Ag nanoparticles on the zinc oxide nanorods would extend the photoabsorption region and reduce the electron transition from CB to VB. The photoelectrochemical performances of ZnO thin film could be effectively enhanced by moderate Ag nanoparticles modification. Under sunlight illumination, the photocurrent of the Ag-0.5/ZnO electrode was about three times as large as that of the zinc oxide electrode. The charge transfer process for the Ag/ZnO electrode under sunlight illumination has been discussed. With the increase of Ag content, the resistivity of the sample decreases sharply.

Notes

Acknowledgements

This work was supported by National Natural Science Foundation of China (Nos. 51701001, 51102072, 51472003, 51572002), Natural Science Foundation of Anhui Higher Education Institution of China (Nos. KJ2015ZD32, KJ2017A924, KJ2017A002), Doctor Scientific Research Fund of Anhui University (No. J01001927), Youth Core Teacher Fund of Anhui University (No. J01005111) and Foundation of Co-operative Innovation Research Center for Weak Signal-Detecting Materials and Devices Integration Anhui University (Nos. Y01008411, WRXH201703).

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Congrong Wang
    • 1
  • Zhengyu Yang
    • 1
  • Jianguo Lv
    • 1
    • 2
    Email author
  • Qianqian Zhu
    • 1
  • Jingwen Jiang
    • 1
  • Min Zhao
    • 1
    • 2
  • Wenhao Wang
    • 1
  • Xiaoshuang Chen
    • 3
  1. 1.School of Physics and Materials EngineeringHefei Normal UniversityHefeiChina
  2. 2.Co-operative Innovation Research Center for Weak Signal-Detecting Materials and Devices IntegrationAnhui UniversityHefeiChina
  3. 3.National Laboratory for Infrared Physics, Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghaiChina

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