Hot carrier collection assisted with surface plasmon integrated with metallic-semiconductor nanostructures directs a way for direct photoelectric conversion, which could be utilized for a photochemical reaction or photovoltaic energy conversion. Modeling plasmon-assisted thermal carrier generation, transport, and injection across the Schottky barrier helps us to acknowledge design considerations for these devices. Here, the effects of the nanostructure’s geometry and light polarization on hot electron collection are emphasized by analyzing a simple structure of rectangular gold nanorod and a sophisticated 2D Au/TiO₂ nanocavity arrays designed by our group. The high electric field intensity inside the metallic nanostructure at the plasmon frequency enhances the hot electron generation shown here. The momentum distribution of hot electrons is determined by the nanostructure’s geometry and light polarization, which mostly affects collection efficiency. The structural and optical design is known to elevate the internal electric field from ordinary to the metal-semiconductor pathway that assists in producing hot carriers that accumulate adequate motion through the Schottky barrier, which further increases the effectiveness of the device.

结合金属-半导体纳米结构的表面等离激元辅助的热载流子收集为直接光电转换提供了一种途径，该方法可用于光化学反应或光伏能量转换。在肖特基势垒上对等离激元辅助的热载流子的产生，传输和注入进行建模有助于我们认识到这些器件的设计考虑因素。在此，通过分析矩形金纳米棒的简单结构和复杂的二维Au / TiO _2，强调了纳米结构的几何形状和光偏振对热电子收集的影响。我们小组设计的纳米腔阵列。金属纳米结构内部在等离激元频率下的高电场强度增强了此处显示的热电子生成。热电子的动量分布取决于纳米结构的几何形状和光偏振，这主要影响收集效率。众所周知，结构和光学设计会将内部电场从普通电场提升到金属半导体通路，从而有助于产生热载流子，这些载流子通过肖特基势垒积累足够的运动，从而进一步提高了器件的效率。