Technical Physics Letters

, Volume 37, Issue 11, pp 1011–1014 | Cite as

Effect of dispersed CdSe/ZnS quantum dots on optical and electrical characteristics of nematic liquid crystal cells

  • E. A. Konshina
  • E. O. Gavrish
  • A. O. Orlova
  • M. V. Artem’ev
Article

Abstract

We have studied the electrical and optical characteristics of cells filled with nematic liquid crystal (NLC) based on cyanobiphenyls with positive dielectric anisotropy, containing dispersed 3.5-nm-sized CdSe/ZnS composite semiconductor nanoparticles (quantum dots, QDs) with a concentration of 0.1–0.2 wt %. In addition to a decrease in the threshold voltage of the electrooptical splay effect, the doping with QDs leads also to a decrease in the phase delay of light and the effective dielectric permittivity of NLC cells. These characteristics are reduced by half during the storage of NLC cells containing about 0.2 wt % QDs, which is related to the self-organization of QDs.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    T. Hegmann, H. Qi, and V. M. Marx, J. Inorg. Organometal. Polym. Mater. 17, 483 (2007).CrossRefGoogle Scholar
  2. 2.
    D. Sikharulidze, Appl. Phys. Lett. 86, 033507 (2005).CrossRefADSGoogle Scholar
  3. 3.
    B. Kinkeadand and T. Hegmann, J. Mater. Chem. 20, 448 (2010).CrossRefGoogle Scholar
  4. 4.
    R. Basu and G. S. Iannacchione, Phys. Rev. E 80, 010 701 (2009).CrossRefGoogle Scholar
  5. 5.
    T. Zhang, C. Zhong, and J. Xu, Jpn. J. Appl. Phys. 48, 055 002 (2009).Google Scholar
  6. 6.
    E. A. Konshina and E. O. Gavrish, Pis’ma Zh. Tekh. Fiz. 37(10), 21 (2011) [Tech. Phys. Lett. 37, 455 (2011)].Google Scholar
  7. 7.
    B. O. Dabbousi, J. Rodriquez-Viejo, F. V. Mikulec, J. R. Heine, H. Mattoussi, R. Ober, K. F. Jensen, and M. G. Bawend, J. Phys. Chem. B. 101, 9463 (1997).CrossRefGoogle Scholar
  8. 8.
    E. A. Konshina, M. A. Fedorov, L. P. Amosova, M. V. Isaev, and D. S. Kostomarov, Opt. Zh. 75(10), 73 (2008) [J. Opt. Technol. 75, 670 (2008)].Google Scholar
  9. 9.
    E. A. Konshina, M. A. Fedorov, and L. P. Amosova, Opt. Zh. 73(12), 9 (2006) [J. Opt. Technol. 73, 830 (2006)].Google Scholar

Copyright information

© Pleiades Publishing, Ltd. 2011

Authors and Affiliations

  • E. A. Konshina
    • 1
    • 2
  • E. O. Gavrish
    • 1
    • 2
  • A. O. Orlova
    • 1
    • 2
  • M. V. Artem’ev
    • 1
    • 2
  1. 1.St. Petersburg State University of Information Technologies, Mechanics, and OpticsSt. PetersburgRussia
  2. 2.Institute for Physicochemical ProblemsBelarusian State UniversityMinskBelarus

Personalised recommendations