Title :
On the modeling of transient diffusion and activation of boron during post-implantation annealing
Author :
Pichler, P. ; Ortiz, C.J. ; Colombeau, B. ; Cowern, N.E.B. ; Lampin, E. ; Claverie, A. ; Cristiano, F. ; Lerch, W. ; Paul, S.
Author_Institution :
Fraunhofer-IISB, Erlangen, Germany
Abstract :
A quantitative description of the transient diffusion and activation of boron during post-implantation annealing steps is one of the most challenging tasks. In industrially relevant situation, it needs to address diffusion at extrinsic concentrations, the agglomeration of self-interstitials, and the formation of boron-interstitial clusters. This article describes the experimental work performed or used to calibrate model parameters as independently as possible. The combined model is then applied to ultra-shallow junction formation by annealing boron implanted into crystalline or preamorphized silicon.
Keywords :
annealing; boron; diffusion; doping profiles; elemental semiconductors; interstitials; silicon; Si:B; boron activation; boron interstitial cluster; crystalline silicon; extrinsic concentration; model parameter calibration; postimplantation annealing; preamorphized silicon; self-interstitial agglomeration; transient diffusion modeling; ultra-shallow junction formation; Annealing; Boron; Calibration; Genetic algorithms; Implants; Ion implantation; Lead compounds; Predictive models; Semiconductor process modeling; Silicon;
Conference_Titel :
Electron Devices Meeting, 2004. IEDM Technical Digest. IEEE International
Print_ISBN :
0-7803-8684-1
DOI :
10.1109/IEDM.2004.1419347