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- W1558873704 abstract "A combination of Ge pre‐amorphization implantation (Ge‐PAI), low‐energy B implantation and laser annealing is a promising method to form highly‐activated, abrupt and ultra‐shallow junctions (USJ). In our previous report of IIT 2006, we succeeded in forming pn junctions less than 10 nm using non‐melt double‐pulsed green laser. However, a large leakage current under reverse bias was observed consequently due to residual defects in the implanted layer. In this study, a method to form USJ is proposed: a combination of low‐temperature solid phase epitaxy and non‐melt laser irradiation for B activation. Ge pre‐amorphization implantation was performed at energy of 6 keV with a dose of 3×1014/cm2. Then B implantation was performed at energy of 0.2 keV with a dose of 1.2×1015/cm2. Samples were annealed at 400 °C for 10 h in nitrogen atmosphere. Subsequently, non‐melt laser irradiation was performed at energy of 690 mJ/cm2 and pulse duration of 100 ns with intervals of 300 ns. As a result, USJ around 10 nm with better crystallinity was successfully formed. And the leakage current of pn diodes was reduced significantly. Moreover, it is proven from secondary ion mass spectroscopy (SIMS) analysis that transient enhanced diffusion (TED) of B is specifically suppressed." @default.
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- W1558873704 date "2008-01-01" @default.
- W1558873704 modified "2023-09-22" @default.
- W1558873704 title "Ultra-Shallow P[sup +]∕N Junction Formation in Si Using Low Temperature Solid Phase Epitaxy Assisted with Laser Activation" @default.
- W1558873704 doi "https://doi.org/10.1063/1.3033688" @default.
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