Influence of the Composition on the Thermoelectric and Electro-physical Properties of Ge-Sb-Te Thin Films for Phase Change Memory Application
| Authors | P.I. Lazarenko1, A.A. Sherchenkov1, S.A. Kozyukhin2,3, D.Y. Terekhov1, A.O. Yakubov1, A.V. Babich1, A.S. Shuliatyev1, I.V. Sagunova1, E.N. Redichev1 |
| Affiliations | 1 National Research University of Electronic Technology, 1, Shokin sq., 124498 Zelenograd, Moscow, Russia 2 Kurnakov Institute of General and Inorganic Chemistry, RAS, 31, Leninsky prosp., 119991, Moscow, Russia 3 National Research Tomsk State University, 634050 Tomsk, Russia |
| Е-mail | aka.jum@gmail.com |
| Issue | Volume 8, Year 2016, Number 3 |
| Dates | Received 04 May 2016; published online 03 October 2016 |
| Citation | P.I. Lazarenko, A.A. Sherchenkov, et al., J. Nano- Electron. Phys. 8 No 3, 03033 (2016) |
| DOI | 10.21272/jnep.8(3).03033 |
| PACS Number(s) | 73.61.Jc, 73.50.Lw |
| Keywords | Phase change memory (2) , Ge-Sb-Te, quasi-binary line GeTe-Sb2Te3, Seebeck coefficient, Electro-physical properties. |
| Annotation | Influence of the composition variation along the quasi-binary line GeTe-Sb2Te3 on the thermoelectric and electro-physical properties of thin films was investigated. GST amorphous thin films have high Seebeck coefficients, which drops nearly on the order of magnitude after the crystallization. Temperature dependences of the resistivities were studied, and it was determined that crystallization temperature increases with moving along the quasi-binary line GeTe-Sb2Te3 from GeSb4Te7 to GeSb2Te4, and then to Ge2Sb2Te5, while the phase transition temperature range decreases. Current-voltage characteristics of amorphous thin films have three voltage ranges with different dependencies due to the different mechanisms of charge carrier transport. |
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