Low-Temperature Thermal Conductivity of Rubrene Single Crystals: Quantitative Estimation of Defect Density in Bulk and Film Crystals

Abstract

Thermal conductivity of rubrene single crystals is measured for both bulk and film-like crystals down to 0.5 K in order to estimate quantitatively density of crystalline defects through their phonon mean free paths. The temperature profile of the bulk rubrene crystals exhibit pronounced peak at ~ 10 K in the thermal conductivity as the result of very long mean-free paths of their phonons which indicates extremely low-level defect density in the region of 1015-1016 cm-3 depending on different growth methods. The crystals grown from gas phase tend to have less defects than those grown from solution. It turned out that the film-like crystals have a few times more defect density as the result of the measurement by using newly developed devices for minute crystals.

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References

  1. 1

    C. Kloc, P. G. Simpkins, T. Siegrist, and R. A. Laudise, J. Cryst. Growth 182, 416 (1997).

    CAS  Article  Google Scholar 

  2. 2

    V. Podzorov, V. M. Pudalov, and M. E. Gershenson, Appl. Phys. Lett. 82, 1739 (2003).

    CAS  Article  Google Scholar 

  3. 3

    J. Takeya, T. Nishikawa, T. Takenobu, S. Kobayashi, Y. Iwasa, T. Mitani, C. Goldmann, C. Krellner, and B. Batlogg, Appl. Phys. Lett. 85, 5078 (2004).

    CAS  Article  Google Scholar 

  4. 4

    T. Matsukawa, Y. Takahashi, T. Tokiyama, K. Sasai, Y. Murai, N. Hirotai, Y. Tominari, N. Mino, M. Yoshimura, M. Abe, J. Takeya, Y. Kitaoka, Y. Mori, S. Morita, and T. Sasaki, Jap. J. Appl. Phys. 47, 8950 (2008).

    CAS  Article  Google Scholar 

  5. 5

    J. Takeya, M. Yamagishi, Y. Tominari, R. Hirahara, Y. Nakazawa, T. Nishikawa, T. Kawase, T. Shimoda, and S. Ogawa, Appl. Phys. Lett. 90, 102120 (2007).

    Article  Google Scholar 

  6. 6

    R. Berman, Thermal Conduction in Solids (Oxford University Press, Oxford, 1976).

    Google Scholar 

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Correspondence to Y. Okada.

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Okada, Y., Uno, M. & Takeya, J. Low-Temperature Thermal Conductivity of Rubrene Single Crystals: Quantitative Estimation of Defect Density in Bulk and Film Crystals. MRS Online Proceedings Library 1154, 1059 (2008). https://doi.org/10.1557/PROC-1154-B10-59

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