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首页> 外文期刊>Journal of Vacuum Science & Technology. B, Microelectronics and Nanometer Structures >P implantation into preamorphized germanium and subsequent annealing: Solid phase epitaxial regrowth, P diffusion, and activation
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P implantation into preamorphized germanium and subsequent annealing: Solid phase epitaxial regrowth, P diffusion, and activation

机译:将P注入预非晶化的锗中并随后进行退火:固相外延再生,P扩散和活化

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摘要

Phosphorus implantation (30 keV, 3 × 10~(15) cm~(-2)) into preamorphized Ge and subsequent rapid thermal or flash lamp annealing is investigated. During annealing a significant P diffusion in amorphous Ge is not observed. However, the fast solid phase epitaxial regrowth causes a rapid redistribution of P. After completion of the regrowth and at temperatures above 500 ℃, a concentration-dependent diffusion of P in crystalline Ge takes place and leads to considerable loss of P toward the surface. An appreciable influence of implantation defects on the diffusion coefficient of P is not detected. For 60 s rapid thermal annealing at 600 ℃ and for 20 ms flash lamp annealing at 900 ℃, the junction depth and the sheet resistance vary between 140 and 200 nm and between 50 and 100 Ω, respectively, and the maximum electrical activation of P is about 3-7 × 10~(19) cm~(-3).
机译:研究了向预先非晶化的Ge中注入磷(30 keV,3×10〜(15)cm〜(-2))以及随后快速热退火或闪光灯退火的方法。在退火过程中,未观察到明显的P扩散到非晶Ge中。然而,快速固相外延再生会导致P快速重新分布。再生完成后,在高于500℃的温度下,P在晶体Ge中的浓度依赖性扩散发生,并导致P向表面的大量损失。没有检测到注入缺陷对P的扩散系数的明显影响。对于600℃的60 s快速热退火和900℃的20 ms闪光灯退火,结深度和薄层电阻分别在140和200 nm之间以及在50和100Ω之间变化,并且P的最大电活化为大约3-7×10〜(19)cm〜(-3)

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