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Journal of Low Temperature Physics

, Volume 142, Issue 3–4, pp 387–390 | Cite as

Photochemical Control of Dark Conductivity - A New Approach to Devices Based on Molecular Crystals

  • T. Naito
  • H. Sugawara
  • T. Inabe
  • Y. Kitajima
  • T. Miyamoto
  • H. Niimi
  • K. Asakura
Article

Thermal analysis of Ag(DM)2, where DM = 2,5-dimethyl-N,N’- dicyanoquinonediimine, clarified that the salt had an insulating amorphous phase ( ≥ 155°C). Characterization of this and related solid states of Ag(DM)2 indicated that a photo-induced process should be essential in controlling the number of carriers and thus conduction behavior of the salt by illumination. In fact, while heating could do nothing but make the salt insulating when the sample temperature exceeded 155°C, ultraviolet-visible light illumination ( < 155°C) could gradually change the properties to be semiconducting with retaining the crystal lattice (average structure).

PACS Numbers

82.30 -b 82.60 -s 82.80.Ej 

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References

  1. 1.
    Naito T., Inabe T., Niimi H., Asakura K. (2004). Adv. Mater. 16: 1786CrossRefGoogle Scholar
  2. 2.
    More detailed manuscript is now in preparation.Google Scholar
  3. 3.
    S. Hünig et al., Eur. J. Inorg. Chem., 899 (1999).Google Scholar

Copyright information

© Springer Science+Business Media, Inc. 2007

Authors and Affiliations

  • T. Naito
    • 1
    • 2
  • H. Sugawara
    • 2
  • T. Inabe
    • 2
  • Y. Kitajima
    • 3
  • T. Miyamoto
    • 4
  • H. Niimi
    • 4
  • K. Asakura
    • 4
  1. 1.Creative Research Initiative “Sousei” (CRIS)Hokkaido UniversityHokkaidoJapan
  2. 2.Division of Chemistry, Graduate School of ScienceHokkaido UniversityHokkaidoJapan
  3. 3.Institute of Materials Structure SciencePhoton Factory (KEK-PF)TsukubaJapan
  4. 4.Catalysis Research Center (CRC)Hokkaido UniversityHokkaidoJapan

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