Journal
JOURNAL OF APPLIED PHYSICS
Volume 113, Issue 18, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4804332
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- European Union [258547]
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In this work, we focused on the analysis of implantation-induced defects, mainly small interstitial clusters (ICs) and {311} defects introduced in n-type Si after ion implantation using deep level transient spectroscopy (DLTS). Silicon ions (at 160 keV or 190 keV) of fluences ranging from (0.1-8.0) x 10(13) cm(-2) have been implanted into n-type Si and annealed at temperatures between 500 degrees C and 800 degrees C specifically to create small ICs or {311}s rod-like defects. In samples dominated by small ICs, DLTS spectra show prominent deep levels at Ec - 0.24 eV and Ec - 0.54 eV. After increasing the fluence and temperature, i.e., reducing the number of small ICs and forming {311} defects, the peak Ec - 0.54 eV is still dominant while other electron traps Ec - 0.26 eV and Ec - 0.46 eV are introduced. There were no observable deep levels in reference, non-implanted samples. The identity and origin of all these traps are interpreted in conjunction with recently developed predictive defect simulation models. (C) 2013 AIP Publishing LLC.
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