绝缘体中金属离子注入合成纳米颗粒的理论研究

理论上提出了利用离散电子态来计算绝缘体中金属纳米颗粒Fermi能级的方法,给出了金属纳米颗粒的能级结构,并得到了依据金属纳米颗粒等离子体共振峰计算金属纳米颗粒尺寸的新公式.该理论可解释相关现象,通过实验初步验证了该理论的正确性. 关键词： 离子注入 金属纳米颗粒 绝缘体 Fermi能级

Theoretical study of nanoparticles in insulators fabricated by metal ion implantation

In this paper, a theoretical method based on the discrete electronic states is proposed to calculate the Fermi-level of metal nanoparticles embedded in an insulator. According to the calculations, the structures of metal nanoparticle energy level are acquired. Meanwhile, the new formula for evaluating the size of metal nanoparticle by using the information about the surface plasmon resonance peak is also provided. Many known phenomena related to the metal nanoparticles can be explained by this theory. The calculation results on size of nanoparticle are found to be in good agreement with the AFM measurements for high dose Cu implanted Si₃N₄/Si samples.