Characterization of High-k Al2O3 Gate Dielectrics Prepared by Oxidation of Aluminum Thin Films

2019 ◽  
Vol 23 (1) ◽  
pp. 11-17
Author(s):  
Giuliano Gozzi ◽  
Veronica Christiano ◽  
Sthefane A. Da Conceição ◽  
Victor Sonnenberg ◽  
Sebastião G. Dos Santos Filho
Keyword(s):  
1999 ◽  
Vol 567 ◽  
Author(s):  
M.C. Gilmer ◽  
T-Y Luo ◽  
H.R. Huff ◽  
M.D. Jackson ◽  
S. Kim ◽  
...  

ABSTRACTA design-of-experiments methodology was implemented to assess the commercial equipment viability to fabricate the high-K dielectrics Ta2O5, TiO2 and BST (70/30 and 50/50 compositions) for use as gate dielectrics. The high-K dielectrics were annealed in 100% or 10% O2 for different times and temperatures in conjunction with a previously prepared NH3 nitrided or 14N implanted silicon surface. Five metal electrode configurations—Ta, TaN, W, WN and TiN—were concurrently examined. Three additional silicon surface configurations were explored in conjunction with a more in-depth set of time and temperature anneals for Ta2O5. Electrical characterization of capacitors fabricated with the above high-K gate dielectrics, as well as SIMS and TEM analysis, indicate that the post high-K deposition annealing temperature was the most significant variable impacting the leakage current density, although there was minimal influence on the capacitance. Further studies are required, however, to clarify the physical mechanisms underlying the electrical data presented.


2001 ◽  
Vol 670 ◽  
Author(s):  
Ran Liu ◽  
Stefan Zollner ◽  
Peter Fejes ◽  
Rich Gregory ◽  
Shifeng Lu ◽  
...  

ABSTRACTRapid shrinking in device dimensions calls for replacement of SiO2 by new gate insulators in future generations of MOSFETs. Among many desirable properties, potential candidates must have a higher dielectric constant, low leakage current, and thermal stability against reaction or diffusion to ensure sharp interfaces with both the substrate Si and the gate metal (or poly-Si). Extensive characterization of such materials in thin-film form is crucial not only for selection of the alternative gate dielectrics and processes, but also for development of appropriate metrology of the high-k films on Si. This paper will report recent results on structural and compositional properties of thin film SrTiO3 and transition metal oxides (ZrO2and HfO2).


2010 ◽  
Vol 94 (1) ◽  
pp. 250-254 ◽  
Author(s):  
Shiow-Huey Chuang ◽  
Min-Lung Hsieh ◽  
Shih-Chieh Wu ◽  
Hong-Cai Lin ◽  
Tien-Sheng Chao ◽  
...  

2019 ◽  
Vol 11 (4) ◽  
pp. 393-406 ◽  
Author(s):  
Eric Vogel ◽  
Arif M. Sonnet ◽  
Chris L. Hinkle

2010 ◽  
Vol 518 (9) ◽  
pp. 2505-2508
Author(s):  
Kana Hirayama ◽  
Wataru Kira ◽  
Keisuke Yoshino ◽  
Haigui Yang ◽  
Dong Wang ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document