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MgF2 films prepared from solvothermally treated precursor solutions

  • Original Paper: Functional coatings, thin films and membranes (including deposition techniques)
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Abstract

MgF2 coating solutions were solvothermally treated at 160 °C for different time periods, this procedure induced crystallization and particle growth. Antireflection coatings prepared on glass from these solutions were compared to films derived from untreated precursor material. Ellipsometric porosimetry (EP) was employed to characterize structural features of coatings on glass as function of annealing temperature. Based on precursor solutions that had undergone solvothermal treatment antireflective coatings with a peak transparency exceeding 99% were prepared on PMMA substrates.

Solvothermal treatment of MgF2 precursor solutions results in crystallization of particles that can directly be applied to PMMA substrates for λ/4 antireflective films.

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Acknowledgements

This project was funded by the German Federal Ministry of Economics and Technology (grant 0329800). We would like to thank Professor Kemnitz (Humboldt University Berlin) for precursor supply and helpful discussions.

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Authors and Affiliations

  1. Fraunhofer-Institut für Silicatforschung, Neunerplatz 2, 97082, Würzburg, Germany

    Rainer Jahn & Peer Löbmann

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  1. Rainer Jahn
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  2. Peer Löbmann
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Correspondence to Peer Löbmann.

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The authors declare that they have no conflict of interest.

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Highlights

  • MgF2 coating solutions were prepared by solvothermal treatment of precursor material

  • This treatment promoted crystallization and particle growth

  • Antireflective λ/4 films could be deposited on polymer substrates without thermal treatment

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Jahn, R., Löbmann, P. MgF2 films prepared from solvothermally treated precursor solutions. J Sol-Gel Sci Technol 85, 514–519 (2018). https://doi.org/10.1007/s10971-018-4590-5

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  • DOI: https://doi.org/10.1007/s10971-018-4590-5

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