Browse > Article
http://dx.doi.org/10.4313/JKEM.2006.19.4.357

Effect of Adhesion Layer on Gate Insulator  

Lee, Dong-Hyun (홍익대학교 정보디스플레이공학과, 홍익대학교 유기정보소재 및 소자연구센터)
Hyung, Gun-Woo (홍익대학교 정보디스플레이공학과, 홍익대학교 유기정보소재 및 소자연구센터)
Pyo, Sang-Woo (홍익대학교 전기정보제어공학과, 홍익대학교 유기정보소재 및 소자연구센터)
Kim, Young-Kwan (홍익대학교 정보디스플레이공학과, 홍익대학교 유기정보소재 및 소자연구센터)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.19, no.4, 2006 , pp. 357-361 More about this Journal
Abstract
The electrical performances of organic thin-film transistors (OTFTs) have been improved for the last decade. In this paper, it was demonstrated that the electrical characteristics of the organic thin film transistors (OTFTs) were improved by using polymeric material as adhesion layer on gate insulator. We have investigated OTFTs with polyimide adhesion layer which was fabricated by vapor deposition polymerization (VDP) processing and formed by co-deposition of 2,2-bis (3,4-dicarboxyphenyl) hexafluoropropane dianhydride and 4,4'-oxydianiline. It was found that the OTFTs with adhesion layer showed better electrical characteristics than with bare layer because of good matching between semiconductor and gate insulator. Our devices of performance are field effect mobility of $0.4cm^2/Vs$, threshold voltage of -0.8 V and on-off current ratio of $10^6$. In addition, to improve the electrical characteristics of OTFT, we have reduced the thickness of adhesion layer up to a few nanometrs.
Keywords
Vapor deposition polimerization(VDP); Organic thin-film-transistors(OTFTs); Adhesion layer;
Citations & Related Records
연도 인용수 순위
  • Reference
1 V. Liberman, V. Malba, and A. F. Bernhardt, 'Integration of vapor deposited polyimide into a multichip module packaging process', IEEE Trans. On Components, Packing, and Manufacturing. Technology. Part B, Vol. 20, p. 13, 1997
2 H. Yanagisita, D. Kitamoto, and N. Koura, 'Preparation and pervaporation performance of polyimide composite membrane by vapor deposition and polymerization(VDP)', J. Membrane Sci., Vol. 136, p. 121, 1997
3 C. A. Pryde, 'IR studies of polyimides, I. Effects of chemical and physical changes during cure', J. Polym. Sci. A., Vol. 27, p. 711, 1989
4 M. L. Chabinyc and A. Salleo, 'Materials requirements and fabrication of active matrix arrays of organic thin-film transistors for displays', Chem. Mater., Vol. 16, p. 4509, 2004   DOI   ScienceOn
5 A. Dodabalapur, Z. Bao, and A. Makhija, 'Organic smart pixels', Appl. Phys. Lett., Vol. 73, p. 142, 1998
6 H. Klauk, B. D'Andrade, and T. N. Jackson, 'All-organic integrated emissive pixels', 57th Annual Device Research Conference Digest, p. 162, 1999
7 Y. Y. Lin, D. J. Gundlach, S. F. Nelson, and T. N. Jackson, 'Pentacene-based organic thin-film transistors', IEEE Trans. Electron Devices, Vol. 44, p, 1325, 1997   DOI   ScienceOn
8 D. J. Gundlach, C. C. Kuo, and T. N. Jackson, 'Organic thin film transistors with field effect mobility', 57th Annual Device Research Conference Digest, p. 164, 1999
9 M. Halik, H. Klauk, M. Brunnbauer, and F. Stellacci, 'Low-voltage organic transistors with an amorphous molecular gate dielectric', Nature, Vol. 431, p. 963, 2004   DOI   ScienceOn
10 S. W. Pyo, D. H. Lee, J. R. Kaa, J. H. Kim, J. H. Shim, and Y. K. Kim, 'Organic thin-film transistors based on vapordeposition polymerized gate insulators', J. J. A .P., Vol. 44, p. 652, 2005