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为了改善金属钼(Mo)电极的光学特性,采用类桑拿法通过聚苯乙烯小球自组装制备了具有周期性结构的Mo电极,通过控制钼的沉积厚度和小球的刻蚀时间来获得具有不同高度和周期的衬底结构,并研究了其对周期性Mo衬底光学特性的影响。实验结果表明:周期性结构衬底显著提高了长波区域(>1 100nm)的反射,尤其当铜锌锡硒(CZTSe)吸收层厚度减薄至0.5μm时,为了进一步增加光吸收,通过在CZTSe薄膜表面引入金字塔形貌的氧化锌,与周期性衬底形成了光学陷阱结构,增加了CZTSe光吸收。该结果对超薄化合物电池的研究具有一定的指导作用。
In order to improve the optical properties of the metal molybdenum (Mo) electrode, a Mo-like electrode with a periodic structure was prepared by the self-assembly of polystyrene beads by the Sauna method. By controlling the deposition thickness of molybdenum and the etching time of the ball, Different height and period of the substrate structure, and studied its impact on the optical properties of the periodic Mo substrate. The experimental results show that the periodic structure substrate significantly improves the reflection in the long wavelength region (> 1 100 nm). In particular, when the thickness of the CuZSe absorber layer is reduced to 0.5 μm, in order to further increase the light absorption, the CZTSe The pyramid-shaped zinc oxide is introduced into the surface of the film to form an optical trap structure with the periodic substrate, thereby increasing the CZTSe light absorption. The results of the study of ultra-thin compound battery has a guiding role.