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Crack-free TiO2 films prepared by adjusting processing parameters via liquid phase deposition technique

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Abstract

TiO2 thin films with controllable morphology and grain size were prepared via a liquid phase deposition (LPD) technique. The effects of the processing parameters including the (NH4)2TiF6 concentration, solution pH, and (NH4)2TiF6:H3BO3 molar ratio on the grain size and morphology of the films were investigated. The prepared samples were characterized by X-ray diffraction, scanning electron microscopy, and ultraviolet–visible spectroscopy. The results showed that the deposition parameters significantly affected the growth and nucleation velocities of the crystalline grains, which resulted in the formation of TiO2 films with different morphologies and grain sizes. The capillary stress among the grains of the film, which resulted in the cracking of the film, depended on the size of the grains. Thus, the cracking of the LPD-derived TiO2 films could be mitigated by adjusting the deposition parameters.

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Acknowledgements

This work was financially supported by Outstanding Young Talents Support Program in Colleges and Universities (gxyqZD2016150), National Natural Science Foundation of China (51778003 and 51578004), and Major Projects of Natural Science Research in Anhui Colleges and Universities (KJ2018ZD050).

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Authors and Affiliations

  1. Anhui Key Laboratory of Advanced Building Materials, Anhui Jianzhu University, Hefei, Anhui, 230022, People’s Republic of China

    Jie Li, Hai-Yan Xu, Ai-Guo Wang, Feng-Jun Zhang & Dao-Sheng Sun

  2. Key Laboratory of Functional Molecule Design and Interface Process, Anhui Jianzhu University, Hefei, Anhui, 230601, People’s Republic of China

    Hai-Yan Xu & Feng-Jun Zhang

  3. Department of Advanced Materials Science and Engineering, Hanseo University, Seosan, 31962, Korea

    Won-Chun Oh

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  1. Jie Li
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  2. Hai-Yan Xu
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  3. Ai-Guo Wang
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  4. Feng-Jun Zhang
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  5. Dao-Sheng Sun
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Correspondence to Hai-Yan Xu or Won-Chun Oh.

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Li, J., Xu, HY., Wang, AG. et al. Crack-free TiO2 films prepared by adjusting processing parameters via liquid phase deposition technique. J. Korean Ceram. Soc. 57, 206–212 (2020). https://doi.org/10.1007/s43207-020-00019-y

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  • DOI: https://doi.org/10.1007/s43207-020-00019-y

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