1. New insights on bottom layer thermal stability and laser annealing promises for high performance 3D VLSI
- Author
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S. Chhun, R. Kachtouli, B. Mathieu, F. Aussenac, X. Garros, M. Casse, M.-P. Samson, A. Laurent, J.P. Barnes, L. Pasini, C. Reita, E. Richard, Claire Fenouillet-Beranger, M. Vinet, E. Petitprez, N. Guillot, Pascal Besson, Bernard Previtali, Fabrice Nemouchi, Perrine Batude, Pierre Perreau, V. Benevent, I. Toque-Tresonne, D. Barge, Laurent Brunet, Karim Huet, Sebastien Kerdiles, G. Druais, F. Deprat, H. Dansas, D. Lafond, V. Lu, and N. Rambal
- Subjects
Very-large-scale integration ,Materials science ,business.industry ,Doping ,Transistor ,Laser ,law.invention ,chemistry.chemical_compound ,chemistry ,law ,MOSFET ,Silicide ,Electronic engineering ,Optoelectronics ,Thermal stability ,Metal gate ,business - Abstract
For the first time the maximum thermal budget of in-situ doped source/drain State Of The Art (SOTA) FDSOI bottom MOSFET transistors is quantified to ensure transistors stability in Sequential 3D (CoolCube™) integration. We highlight no degradation of Ion/Ioff trade-off up to 550°C. Thanks to both metal gate work-function stability especially on short devices and silicide stability improvement, the top MOSFET temperature could be relaxed up to 500°C. Laser anneal is then considered as a promising candidate for junctions activation. Based on in-depth morphological and electrical characterizations it demonstrates very promising results for high performance Sequential 3D integration.
- Published
- 2014
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