Laser doping for microelectronics and microtechnology,10.1016/j.apsusc.2005.01.172,Applied Surface Science,Thierry Sarnet,Gurwan Kerrien,Nourdin Yaako

Laser doping for microelectronics and microtechnology (Citations: 1)


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The future CMOS generations for microelectronics will require advanced doping techniques capable to realize ultra-shallow, highly doped junctions with abrupt profiles. Recent experiments have shown the potential capabilities of laser processing of ultra shallow junctions (USJ). According to the International Technology Roadmap for Semiconductors, two laser processes are able to reach the ultimate predictions: laser thermal processing or annealing (LTP or LTA) and gas immersion laser doping (GILD). Both processes are based on the rapid melting/solidification of the substrate. During solidification, the liquid silicon, which contains the dopants, is formed epitaxially from the underlying crystalline silicon. In the case of laser thermal annealing, dopants are implanted before laser processing. GILD skips the ion-implantation step: in this case the dopants are chemisorbed on the Si surface before the laser-shot. The dopants are then incorporated and activated during the laser process. Activation is limited to the liquid layer and this chemisorption/laser-shot cycle can be repeated until the desired concentration is reached. In this paper, we investigate the possibilities and limitations of the GILD technique for two different substrates: silicon bulk and SOI. We also show some laser doping applications for the fabrication of micro and nanoresonators, widely used in the MEMS Industry.

Journal: Applied Surface Science - APPL SURF SCI , vol. 247, no. 1, pp. 537-544, 2005

DOI: 10.1016/j.apsusc.2005.01.172

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Keywords (5)

Laser doping for microelectronics and microtechnology,10.1016/j.apsusc.2005.01.172,Applied Surface Science,Thierry Sarnet,Gurwan Kerrien,Nourdin Yaako

References (4)

Gas immersion laser doping (GILD) for ultra-shallow junction formation (Citations: 6)

Laser thermal processing for ultra shallow junction formation: numerical simulation and comparison with experiments (Citations: 7)

Fabrication of ultrathin p++ silicon microstructures using ion implantation and boron etch-stop (Citations: 5)

Electrically Active and Inactive B Lattice Sites in Ultrahighly B Doped Si(001): An X-Ray Near-Edge Absorption Fine-Structure and High-Resolution Diffraction Study (Citations: 5)

Citations (1)

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