Ag纳米粒子等离子体共振增强太阳能电池吸收

针对薄膜太阳能电池硅薄膜层吸收效率较低的问题,提出了运用金属纳米粒子局域表面等离子体共振(LSPR)增强太阳能电池的吸收效率,采用时域有限差分(FDTD)法,模拟计算了太阳能电池中不同厚度的硅薄膜层吸收特性,分析了不同几何参数的矩形Ag纳米粒子与Ag背反射膜对增强太阳能电池吸收效率的影响作用。计算结果表明,硅薄膜层厚度为500nm的太阳能电池具有较高的吸收效率,通过调整Ag纳米粒子的相关参数,有效地降低了太阳电池硅薄膜表面的反射损耗,取得最大吸收增强因子为1.35。Ag背反射膜有效地降低了Ag纳米粒子硅薄膜结构的透射损耗,其最大的吸收增强因子达到1.42。

Enhancement of Absorption of Solar Cells by Plasmon Resonance Based on Ag Nanoparticle

Aiming at the problem of low absorption efficiency of thin film solar cell silicon film layer,it is pro?posed to enhance the absorption efficiency of solar cells by metal nanoparticle localized surface plasmon resonance(LSPR).The finite difference time domain(FDTD)method is used to simulate the absorption characteristics of sili?con film layers with different thicknesses in solar cells.The effects of rectangular Ag nanoparticles and Ag back re?flection films with different geometric parameters on the absorption efficiency of solar cells are analyzed.The results show that the solar cell with the silicon film thickness of 500 nm has better absorption.By adjusting the relevant pa?rameters,Ag nanoparticles effectively reduce the reflection loss on the surface of the solar cell silicon film,and the maximum absorption enhancement factor is 1.35.The Ag back reflector film effectively reduces the transmission loss of the Ag nanoparticle silicon film structure,and its maximum absorption enhancement factor reaches 1.42.