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Journal of Display Technology

Journal of Display Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 3, Iss. 1 — Mar. 1, 2007
  • pp: 45–51

Improved Performance of F-Ions-Implanted Poly-Si Thin-Film Transistors Using Solid Phase Crystallization and Excimer Laser Crystallization

Chun-Hao Tu, Ting-Chang Chang, Po-Tsun Liu, Che-Yu Yang, Li-Wei Feng, Chia-Chou Tsai, Li-Ting Chang, Yung-Chun Wu, Simon M. Sze, and Chun-Yen Chang

Journal of Display Technology, Vol. 3, Issue 1, pp. 45-51 (2007)


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Abstract

Polycrystalline silicon thin-film transistors (Poly-Si TFTs) with F-ions-implantation were investigated in this study. The electrical characteristics and reliability of the F-ions-implanted poly-Si TFTs were reported for solid phase crystallization (SPC) and excimer laser crystallization (ELC) methods respectively. The thermal annealing causes F-ions to pile up at the poly-Si interface, without the initial pad oxide deposition. With the introduction of fluorine in poly-Si film, the trap state density was effectively reduced. Also, the presence of strong Si-F bonds enhances electrical endurance against hot carrier impact by using F-ions-implantation. These improvements in electrical characteristics are even obvious for the ELC poly-Si TFTs compared to the SPC ones.

© 2007 IEEE

Citation
Chun-Hao Tu, Ting-Chang Chang, Po-Tsun Liu, Che-Yu Yang, Li-Wei Feng, Chia-Chou Tsai, Li-Ting Chang, Yung-Chun Wu, Simon M. Sze, and Chun-Yen Chang, "Improved Performance of F-Ions-Implanted Poly-Si Thin-Film Transistors Using Solid Phase Crystallization and Excimer Laser Crystallization," J. Display Technol. 3, 45-51 (2007)
http://www.opticsinfobase.org/jdt/abstract.cfm?URI=jdt-3-1-45

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