Yang Meng, Fu Zhengping, Lin Feng, Zhu Xing
School of Physics, State Key Laboratory for Mesoscopic Physics, Peking University, Beijing 100871, China.
Opt Express. 2011 Jul 4;19 Suppl 4:A763-71. doi: 10.1364/OE.19.00A763.
The enhancement of solar light absorption in a solar cell is a challenging issue. In this article we show that in a thin-film silicon solar cell covered with silver nanoparticles on the surface, the absorption of the incident light can be particularly enhanced at certain angular range and wavelength. Such absorption enhancements are associated with the resonant localized surface plasmon (LSP) modes of the nanoparticle and nanoparticle-induced local Fabry-Perot (FP) modes. Our simulations suggest that the spectral shift of the LSP modes due to changing the incident angle leads to an incident-angle-sensitive absorption enhancement of the solar cell. Selecting the incident angle in a well-defined range of 0° to 35° is essential for optimizing the performance of a thin-film solar cell.
提高太阳能电池对太阳光的吸收是一个具有挑战性的问题。在本文中，我们表明，在表面覆盖有银纳米颗粒的薄膜硅太阳能电池中，在特定的角度范围和波长下，入射光的吸收可以得到显著增强。这种吸收增强与纳米颗粒的共振局域表面等离子体（LSP）模式以及纳米颗粒诱导的局域法布里-珀罗（FP）模式有关。我们的模拟表明，由于入射角变化导致的LSP模式的光谱偏移会使太阳能电池的吸收增强对入射角敏感。在0°至35°的明确范围内选择入射角对于优化薄膜太阳能电池的性能至关重要。
