镶嵌纳米颗粒直接在单晶硅太阳电池中产生载流子
Direct generation of charge carriers in c-Si solar cells due to embedded nanoparticles
摘要：
众所周知，硅是间接带隙材料，降低了其在光伏应用中的效率。最近提出了在嵌入太阳能电池中的金属纳米颗粒中使用表面等离子体激元作为提高薄膜硅太阳能电池效率的方法。在小粒子中主导等离子体激元的偶极模式产生具有所有波数的傅立叶分量的电场。在这项工作中，我们表明，这样的字段创建电子空穴对没有声子的援助，并讨论了这种效果的重要性相比，辐射的粒子和损失由于加热。
英文摘要：
It is known that silicon is an indirect band gap material, reducing its efficiency in photovoltaic applications. Using surface plasmons in metallic nanoparticles embedded in a solar cell has recently been proposed as a way to increase the efficiency of thin film silicon solar cells. The dipole mode that dominates the plasmons in small particles produces an electric field having Fourier components with all wave numbers. In this work, we show that such a field creates electron-hole-pairs without phonon assistance, and discuss the importance of this effect compared to radiation from the particle and losses due to heating.
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