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Diffusion and activation of ultrashallow B implants in silicon on insulator: End-of-range defect dissolution and the buried Si/SiO2 interface

Hamilton, JJ, Cowern, NEB, Sharp, JA, Kirkby, KJ, Collart, EJH, Colombeau, B, Bersani, M, Giubertoni, D and Parisini, A (2006) Diffusion and activation of ultrashallow B implants in silicon on insulator: End-of-range defect dissolution and the buried Si/SiO2 interface APPLIED PHYSICS LETTERS, 89 (4). ? - ?. ISSN 0003-6951

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Abstract

The fabrication of preamorphized p-type ultrashallow junctions in silicon-on-insulator (SOI) has been investigated. Electrical and structural measurements after annealing show that boron deactivation and transient enhanced diffusion are reduced in SOI compared to bulk wafers. The reduction is strongest when the end-of-range defects of the preamorphizing implant are located deep within the silicon overlayer of the SOI silicon substrate. Results reveal a very substantial increase in the dissolution rate of the end-of-range defect band. A key player in this effect is the buried Si/SiO2 interface, which acts as an efficient sink for interstitials competing with the silicon surface.

Item Type: Article
Uncontrolled Keywords: Science & Technology, Physical Sciences, Physics, Applied, Physics
Related URLs:
Divisions: Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Ion Beam Centre
Depositing User: Mr Adam Field
Date Deposited: 27 May 2010 14:06
Last Modified: 23 Sep 2013 18:26
URI: http://epubs.surrey.ac.uk/id/eprint/110

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