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.
This is a preview of subscription content, access via your institution.
Buy single article
Instant access to the full article PDF.
Tax calculation will be finalised during checkout.
C. Kloc, P. G. Simpkins, T. Siegrist, and R. A. Laudise, J. Cryst. Growth 182, 416 (1997).
V. Podzorov, V. M. Pudalov, and M. E. Gershenson, Appl. Phys. Lett. 82, 1739 (2003).
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).
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).
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).
R. Berman, Thermal Conduction in Solids (Oxford University Press, Oxford, 1976).
About this article
Cite this article
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