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Controlling the size of ZnO quantum dots using the dressed photon–phonon-assisted sol–gel method

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Abstract

We developed a sol–gel method using the dressed photon–phonon (DPP) process. DPPs are selectively exited in nanoscale structures at photon energies that are lower than the bandgap energy, which allows one to increase the growth rate of smaller ZnO quantum dots (QDs). Thus, we obtained a smaller size variance of ZnO QDs. The growth rate was proportional to the power of the light used for DPP excitation. The results were confirmed using a rate equation that accounted for the concentration of the sol–gel solution.

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Acknowledgments

This work was partially supported by The University of Tokyo Global COE Program “Secure-Life Electronics”, Project for Developing Innovation Systems of the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Grant-in-Aid for Young Scientists (A) from MEXT, and by a research grant (Basic Research) from The TEPCO Memorial Foundation.

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Authors and Affiliations

  1. Department of Electrical Engineering and Information Systems, School of Engineering, The University of Tokyo, Tokyo, 113-8656, Japan

    Y. Liu, T. Yatsui & M. Ohtsu

  2. Nanophotonics Research Center, The University of Tokyo, Tokyo, 113-8656, Japan

    T. Yatsui & M. Ohtsu

Authors
  1. Y. Liu
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  2. T. Yatsui
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  3. M. Ohtsu
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Correspondence to Y. Liu.

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Liu, Y., Yatsui, T. & Ohtsu, M. Controlling the size of ZnO quantum dots using the dressed photon–phonon-assisted sol–gel method. Appl. Phys. B 108, 707–711 (2012). https://doi.org/10.1007/s00340-012-5151-1

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  • DOI: https://doi.org/10.1007/s00340-012-5151-1

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