Abstract
We present the results of studies on the electrical and physical modifications to Poly(3-hexylthiophene), upon thermal annealing. Thermally-induced performance modifications and thermal stability of polythiophene thin film transistors are explored. We observe substantial mobility improvements in devices annealed at low temperatures (>80°C), as well as increases in on/off ratios by two orders of magnitude at moderate anneal temperatures (~120°C). We document changes in conductivity, mobility, on current, and on/off ratio with anneal temperature and total thermal budget. In conjunction with material analysis, we develop qualitative models for the mechanisms involved in the annealing/degradation processes. Hence, this study provides a comprehensive analysis of the effect of thermal cycling of polythiophene TFTs on various device performance metrics, and identifies the relevant thermal limits and failure mechanisms.
Similar content being viewed by others
References
]1] H. Sirringhaus, N. Tessler, and R. H. Friend, Science 280, 1741 (1998)
]2] C. Vaterlein, B. Ziegler, W. Gebauer, H. Neureiter, M. Stoldt, M. Weaver, Synthetic Metals 76, 133 (1996)
]3] A. Brown, C. Jarrett, D. Leeuw and M. Matters, Synthetic Metals 88, 37 (1997)
]4] Y. Liu, K. Oshima, T. Yamauchi, M. Shimomura and S. Miyauchi, Synthetic Metals 101, 451 (1999)
]5] K. Yoshino, D. Park, B. Park, M. Onoda and R. Sugimoto, Solid State Comm. 67, 1119 (1988)
]6] S. Hotta and K. Ito “Electronic Properties of Polythiophenes.” Denis Fichou, Handbook of Oligo- and Polythiophenes, ed. D. Fichou (Wiley-vch, 1999) pp. 45–82
]7] G. Kilic, L. Toppare and E. Yurtsever . Synthetic Metals 79, 19 (1996)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Mattis, B.A., Chang, P.C. & Subramanian, V. Effect of thermal cycling on performance of Poly(3-hexylthiophene) Transistors. MRS Online Proceedings Library 771, 1035 (2003). https://doi.org/10.1557/PROC-771-L10.35
Published:
DOI: https://doi.org/10.1557/PROC-771-L10.35