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Optical, structural, enhanced local vibrational and fluorescence properties in K-doped ZnO nanostructures

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Abstract

We studied structural, optical and vibrational properties of K-doped ZnO nanostructures. X-ray diffraction studies reveal that the prepared particles are hexagonal wurtzite in structure. Increase in lattice parameters and unit cell volume is observed after K doping. Dopant influences on stress, strain of the system are studied using W–H plots. Band gap variation by doping of K is identified from optical absorption studies. Photoluminescence studies have given insight into the enhancement in blue emission observed by K doping along with the near band emission of nano ZnO. From Fourier transform infrared spectral measurements, K-related local vibration mode is observed along with the information related to influence of doping on characteristic vibrational modes of ZnO.

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Authors and Affiliations

  1. Divison of Nanosceicne and Technology, BIT Campus, Anna University, Tiruchirappalli, 620 024, India

    V. Bharathi & M. Sivakumar

  2. Department of Physics, National Institute of Technology, Tiruchirappalli, 620 015, India

    R. Udayabhaskar & B. Karthikeyan

  3. Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3, Bunkyo-cho, Matsuyama, Ehime, 790-8577, Japan

    Hiromichi Takebe

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  1. V. Bharathi
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  2. M. Sivakumar
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  3. R. Udayabhaskar
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  4. Hiromichi Takebe
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  5. B. Karthikeyan
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Correspondence to R. Udayabhaskar or B. Karthikeyan.

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Bharathi, V., Sivakumar, M., Udayabhaskar, R. et al. Optical, structural, enhanced local vibrational and fluorescence properties in K-doped ZnO nanostructures. Appl. Phys. A 116, 395–401 (2014). https://doi.org/10.1007/s00339-013-8139-8

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  • DOI: https://doi.org/10.1007/s00339-013-8139-8

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