ABSTRACT
Inspired by the rapid development of nanotechnology, fabrications of various subwavelength nanostructures have been successfully demonstrated to achieve many enhanced physical properties such as the antireflection performances and so on. 1–5 Specifically, as illustrated in Figure 2.1, many different types of photon management structures have been extensively explored, which include vertical nanowire, nanocone, nanowell, nanopyramid arrays, and so on, exhibiting impressive light-trapping properties with the minimal active material thickness required. 6–9 All of these structures with excellent light management properties can then be utilized in numerous optoelectronic devices, desiring the proper photon management. The typical applications involve solar cells, photodetectors, and phototransistors, among others. 1,10–12
