We elaborate a semi-analytical model for calculation of the bulk internal emission of photoelectrons from metal nanoparticles into a semiconductor matrix. We introduce important effects in the model as the jump of the effective electron mass at the metal–semiconductor interface and cooling of the hot electrons because of electron–electron and electron–nanoparticle surface collisions in the metal. We study the interplay between the plasmonic electric dipole and quadrupole resonances and reveal the optimum parameters for different geometrical shapes of nanoparticles with respect to the photoemission cross section. We find that the absorption cross section well-predicts the optimum size of the dipolar nanoparticle. This opens the possibility for the fast optimization and design of the photoelectric devices.

中文翻译：

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不同形状的等离子体纳米天线的整体光发射

我们精心设计了一个半分析模型，用于计算从金属纳米颗粒到半导体基质的光电子的内部内部发射。我们在模型中引入了重要的影响，例如由于金属中的电子-电子和电子-纳米粒子表面碰撞，有效电子质量在金属-半导体界面处的跃迁和热电子的冷却。我们研究了等离子体电偶极子和四极子共振之间的相互作用，并揭示了相对于光发射截面而言，纳米粒子的不同几何形状的最佳参数。我们发现吸收截面很好地预测了偶极纳米粒子的最佳尺寸。这为光电器件的快速优化和设计开辟了可能性。