该用何种金属纳米颗粒来提升硅薄膜太阳电池的效率?

Which Metal Nanoparticles Should be Used to Improve the Efficiency of Silicon Thin-Film Solar Cells?

提升光电转换效率一直是太阳电池领域的主要研究方向。基于等离激元共振效应提高硅薄膜太阳电池效率是一种行之有效的技术和手段。入射光在金属/半导体界面处产生的等离激元增强散射机制能有效增强有源层对入射太阳光的吸收,从而提高能量转换效率。本文从介绍太阳电池的工作机制及基本参数入手,综述了利用金属纳米颗粒及化合物纳米材料、等离子体激元、表面钝化、光栅和陷光结构等提升硅薄膜太阳电池效率的研究进展。综合不同金属(Au、Ag和Al等)纳米颗粒对提升单晶硅薄膜太阳电池效率的效果及成本因素,肯定了用Al纳米颗粒提升单晶硅薄膜太阳电池效率的可行性及重要意义。

Improving the photoelectric conversion efficiency has been the main research direction in the development of solar cells.It is an effective technology and method to improve the efficiency of silicon film solar cells by using plasmon resonance effect.The enhanced scattering mechanism of plasmon generated by incident light at the metal/semiconductor interface increases light absorption for the active layer,thereby improving the energy conversion efficiency of solar cells.We introduce the working mechanism and basic parameters of solar cells;then,detail the research progress in improving efficiency of silicon thin-film solar cells based on metal nanoparticles and compound nanomaterials,plasmon,surface passivation,grating,and trapping structures.After comparing the effects and cost factors of different metal nanoparticles[i.e.,gold(Au),silver(Ag),and aluminum(Al)]on the efficiency of the solar cell of monocrystalline silicon solar cells,the feasibility and application significance of using Al nanoparticles to enhance the performance of such solar cells are affirmed.