论文标题
硅从第一原理中辅助使用硅的螺旋螺旋 - 螺旋形重组
Phonon-assisted Auger-Meitner Recombination in Silicon from First Principles
论文作者
论文摘要
我们提出了一种一致的第一原理方法，用于研究间接间隙半导体中直接和声音辅助的螺旋螺旋体 - 增长剂重组（AMR），我们适用于硅过程中AMR过程的微观起源。我们的结果与实验测量非常吻合，并表明，声子辅助的贡献主导了N型和P型硅的重组率，这表明了声子在启用AMR中的关键作用。我们还将整体速率分解为特定的声子和电子谷的贡献，以进一步阐明AMR的微观起源。我们的结果突出了通过应变工程修改硅中AMR速率的潜在途径。
We present a consistent first-principles methodology to study both direct and phonon-assisted Auger-Meitner recombination (AMR) in indirect-gap semiconductors that we apply to investigate the microscopic origin of AMR processes in silicon. Our results are in excellent agreement with experimental measurements and show that phonon-assisted contributions dominate the recombination rate in both n-type and p-type silicon, demonstrating the critical role of phonons in enabling AMR. We also decompose the overall rates into contributions from specific phonons and electronic valleys to further elucidate the microscopic origins of AMR. Our results highlight potential pathways to modify the AMR rate in silicon via strain engineering.
